SP6203EM5-L/TR [SIPEX]

Adjustable Positive LDO Regulator, CMOS, PDSO5, LEAD FREE, MO-178AA, SOT-23, 5 PIN;
SP6203EM5-L/TR
型号: SP6203EM5-L/TR
厂家: SIPEX CORPORATION    SIPEX CORPORATION
描述:

Adjustable Positive LDO Regulator, CMOS, PDSO5, LEAD FREE, MO-178AA, SOT-23, 5 PIN

稳压器
文件: 总16页 (文件大小:711K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Solved by  
SP6203/6205  
TM  
Low Noise, 300mA and 500mA CMOS LDO Regulators  
FEATURES  
FꢀXED  
ADJUSTABLE  
Very Low Dropout Voltage: 0.61 PMOS Pass  
VOUT  
2
VOUT  
V
OUT  
Device  
ADJ  
NC  
SP6203  
SP6205  
SP6203  
SP6205  
Accurate Output Voltage: 2% over Temperature  
Guaranteed 500mA Output Current: SP6205  
Ultra Low Noise Output: ꢀ2µVRMS with ꢀ0nF  
Bypass  
BYP  
7
6
5
2
3
NC  
NC  
NC  
NC  
7
6
5
GND  
GND  
EN  
3
8 Pin DFN  
8 Pin DFN  
VIN  
EN  
V
IN  
Unconditionally Stable with 2.2µF Ceramic  
Low Quiescent Current: ꢂ5µA  
Very Low Ground Current: 350µA at 500 mA  
Power-Saving Shutdown Mode: < ꢀµA  
Fast Turn-On and Turn-Off: 60µS  
Fast Transient Response  
NowAvailableinLeadFreePackaging  
APPLꢀCATꢀONS  
Current Limit and Thermal Shutdown Protection  
Very Good Load/Line Regulation: 0.07/0.0ꢂ%  
Excellent PSRR: 67dB < ꢀkHz  
Industry Standard SOT-23-5 and Small ꢃ pin  
2X3 DFN Package  
Fixed Output Voltages: 2.5V, 2.7V, 2.ꢃV,  
Cellular / GSM Phones  
Laptop / Palmtop Computers  
Battery-Powered Systems  
Pagers  
Medical Devices  
MP3/CD Players  
2.ꢃ5V, 3.0V and 3.3V  
Adjustable Output Available  
Digital Still Cameras  
DESCRꢀPTꢀON  
The SP6203/6205 are ultra low noise CMOS LDOs with very low dropout and ground current. The noise  
performance is achieved by means of an external bypass capacitor without sacrificing turn-on and turn-off  
speedcriticaltoportableapplications.Extremelystableandeasytouse,thesedevicesofferexcellentPSRR  
and Line/Load regulation. Target applications include battery-powered equipment such as portable and  
wirelessproducts.Regulators'groundcurrentincreasesonlyslightlyindropout.Fastturn-on/turn-offenable  
control and an internal 301 pull down on output allows quick discharge of output even under no load  
conditions. Both LDOs are protected with current limit and thermal shutdown.  
Both LDOs are available in fixed & adjustable output voltage versions and come in an industry standard  
SOT-23 5-pin and small 2X3 ꢃpin DFN packages. For SC-70 ꢀ00mA CMOS LDO, SP62ꢀ3 is available.  
TYPꢀCAL APPLꢀCATꢀON CꢀRCUꢀT  
V
V
IN  
IN  
V
V
OUT  
OUT  
1
2
3
5
4
1
2
3
5
4
C
C
2.2µF  
IN  
IN  
C
OUT  
2.2µF Ceramic  
C
OUT  
2.2µF Ceramic  
2.2µF  
SP6203  
SP6205  
SP6203  
SP6205  
5-Pin  
ADJUSTABLE  
5-Pin  
FIXED  
ADJ  
EN  
EN  
BYP  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
OPERATꢀNG RATꢀNGS  
ABSOLUTE MAXꢀMUM RATꢀNGS  
Input Voltage (VIN)...........................................+2.7V to +5.5V  
Enable Input Voltage (VEN)...........................................0 to 5.5V  
Junction Temperature (TJ)...........................................-ꢂ0°C to +ꢀ25°C  
Thermal Resistance, SOT-23-5 (eJA)...........................................Note ꢀ  
Thermal Resistance, SOT-23-6 (eJA)...........................................Note ꢀ  
Supply Input Voltage (VIN)..........................................................-2V to 6V  
Output Voltage (VOUT).....................................................-0.6V to VIN +ꢀV  
Enable Input Voltage (VEN)........................................................-2V to 6V  
Power Dissipation (PD)......................................Internally Limited, Note ꢀ  
Lead Temperature (soldering 5s)...........................................+260°C  
Storage Temperature.....................................................-65°C to +ꢀ50°C  
Junction Temperature..........................................................+ꢀ50°C  
Remark: The device is not guaranteed to function outside its operating rating.  
Thesearestressratingsonlyandfunctionaloperationofthedeviceatthese  
ratings or any other above those indicated in the operation sections of the  
specifications below is not implied. Exposure to absolute maximum rating  
conditions for extended periods of time may affect reliability.  
ELECTRꢀCAL SPECꢀFꢀCATꢀONS  
Unless otherwise specified: VIN=VOUT + 0.5V to 6V, COUT = 2.2µF ceramic, CIN = 2.2µF, IOUT =ꢀ00µA,  
-ꢂ0°C < T < ꢀ25°C. The z denotes the specifications which apply over full operating temperature range -ꢂ0°C to  
+ꢀ25°C, unless otherwise specified.  
PARAMETER  
MꢀN  
TYP  
MAX  
6
UNꢀTS  
V
z  
z
CONDꢀTꢀONS  
Input Voltage  
Output Voltage Accuracy  
-2  
+2  
%
z  
Variation from specified VOUT  
Output Voltage  
50  
ppm/°C  
6VOUT/6T  
Temperature Coefficient, Note2  
Reference Voltage  
Line Regulation  
ꢀ.225  
ꢀ.25  
0.0ꢂ  
ꢀ.275  
0.3  
V
%/V  
%
z  
Adjustable version only  
6VOUT (VIN below 6V)  
Load Regulation, Note 3  
0.07  
0.ꢀ3  
0.3  
0.5  
IOUT = 0.ꢀmA to 300mA (SP6203)  
IOUT = 0.ꢀmA to 500mA (SP6205)  
Dropout Voltage for VOUT > 3.0V,  
Note ꢂ  
0.06  
60  
IOUT = 0.ꢀmA  
IOUT = ꢀ00mA  
ꢀ20  
ꢀꢃ0  
300  
mV  
IOUT = 200mA  
IOUT = 300mA (SP6203)  
IOUT = 500mA (SP6205)  
300  
500  
z  
z  
Ground Pin Current, Note 5  
ꢂ5  
ꢀ00  
z  
IOUT = 0.ꢀmA (IQUIESCENT  
)
ꢀꢀ0  
ꢀ75  
235  
350  
IOUT = ꢀ00mA  
IOUT = 200mA  
IOUT = 300mA (SP6203)  
IOUT = 500mA (SP6205)  
µA  
330  
ꢂꢁ0  
z  
z  
Shutdown Supply Current  
Current Limit  
0.0ꢀ  
µA  
z  
VEN < 0.ꢂV (shutdown)  
0.33  
0.55  
0.50  
0.ꢃ5  
0.ꢃ  
ꢀ.ꢂ  
A
VOUT = ZeroV (SP6203)  
VOUT = ZeroV (SP6205)  
Thermal Shutdown Junction  
Temperature  
ꢀ70  
°C  
Regulator Turns off  
Thermal Shutdown Hysteresis  
Power Supply Rejection Ratio  
Output Noise Voltage, Note 6  
ꢀ2  
67  
°C  
Regulator turns on again at ꢀ5ꢃ°C  
f ) ꢀkHz  
dB  
ꢀ50  
630  
ꢀ2  
CBYP = 0nF, IOUT = 0.ꢀmA  
CBYP = 0nF, IOUT =300mA  
CBYP = ꢀ0nF, IOUT = 0.ꢀmA  
CBYP = ꢀ0nF, IOUT = 300mA  
µVRMS  
50  
75  
Thermal Regulation, Note 7  
0.05  
25  
%/W  
6VOUT/6PD  
Wake-Up Time (TWU), Note ꢃ  
(from shutdown mode)  
50  
µs  
V
IN * ꢂV, Note ꢀ0  
IOUT = 30mA  
VIN * ꢂV, Note ꢀ0  
Turn-On Time (TON), Note ꢁ  
(from shutdown mode)  
60  
ꢀ20  
µs  
µs  
IOUT = 30mA  
Turn-Off Time (TOFF),  
ꢀ00  
ꢀ5  
250  
25  
IOUT = 0.ꢀmA, VIN * ꢂV, Note ꢀ0  
IOUT = 300mA, VIN * ꢂV, Note ꢀ0  
Output Discharge Resistance  
Enable Input Logic Low Voltage  
Enable Input Logic High Voltage  
30  
1  
V
No Load  
0.ꢂ  
z  
z  
Regulator Shutdown  
Regulator Enabled  
ꢀ.6  
V
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
2
ELECTRꢀCAL SPECꢀFꢀCATꢀONS NOTES  
Note 1: Maximum power dissipation can be calculated using the formula: PD = (TJ(max) - TA) / eJA, where TJ(max) is  
the junction temperature, TA is the ambient temperature and eJA is the junction-to-ambient thermal resistance. eJC  
is 6°C/W for this package. Exceeding the maximum allowable power dissipation will result in excessive die  
temperature and the regulator will go into thermal shutdown mode. eJA is 191°C/W for SOT-23-5, and is 59°C/W  
for the ꢃ-pin DFN. A part mounted on a PC board will deliver improved thermal performance based upon copper  
surface area.  
Note 2: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total  
temperature range.  
Note 3: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in  
output voltage due to heating effects are covered by the thermal regulation specification.  
Note 4: Dropout-voltage is defined as the input to output differential at which the output voltage drops 2% below its  
nominal value measured at ꢀV differential.  
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of  
the load current plus the ground pin current.  
Note 6: Output noise voltage is defined within a certain bandwidth, namely ꢀ0Hz < BW < ꢀ00kHz. An external  
bypass cap (ꢀ0nF) from reference output (BYP pin) to ground significantly reduces noise at output.  
Note 7: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power  
dissipation is applied, excluding load and line regulation effects. Specifications are for a 300mA load pulse at VIN  
6V for t = ꢀms.  
=
Note 8: The wake-up time (TWU) is defined as the time it takes for the output to start rising after enable is brought  
high.  
Note 9: The total turn-on time is called the settling time (TS), which is defined as the condition when both the  
output and the bypass node are within 2% of their fully enabled values when released from shutdown.  
Note 10: For output voltage versions requiring VIN to be lower than ꢂV, timing (TON & TOFF) increases slightly.  
FUNCTIONAL DIAGRAM  
VOUT  
V
IN  
VIN  
EN  
VOUT  
EN  
1.25V  
bandgap  
reference  
1.25V  
bandgap  
reference  
R1  
BYP  
ADJ  
R2  
current limit  
current limit  
Cbyp  
(optional)  
&
&
thermal shutdown  
thermal shutdown  
GND  
GND  
Low Noise Fixed Regulator - 5 Pin  
Low Noise Adjustable Regulator - 5 Pin  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
3
PꢀN DESCRꢀPTꢀON  
5 PꢀN OPTꢀON  
PIN NUMBER  
NAME  
VIN  
FUNCTION  
2
3
Power Supply Input  
Ground Terminal  
GND  
EN  
Enable/Shutdown (Logic high = enable, logic  
low = shutdown)  
ꢂ (Fixed)  
ꢂ (adj.)  
5
BYP  
ADJ  
VOUT  
Reference bypass input for ultra-quiet operation.  
Connecting a ꢀ0nF cap on this pin reduces  
output noise.  
Adjustable (Input): Adjustable regulator feed-  
back input. Connect to a resistive voltage-  
divider network.  
Regulator Output Voltage  
PꢀNOUT 5 PꢀN SOT-23  
V
EN GND  
IN  
V
GND  
2
EN  
IN  
3
2
1
1
3
SIPEX  
SIPEX  
4
4
5
5
V
OUT  
V
ADJ  
BYP  
OUT  
Fixed Voltage Regulator  
Adjustable Voltage Regulator  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
PꢀN DESCRꢀPTꢀON  
8 PꢀN OPTꢀON  
ꢃ PIN DFN  
PIN CONFIGURATION  
PIN NUMBER  
ꢀ(fixed)  
NAME  
FUNCTION  
VOUT  
Regulator Output Voltage. Connect to Pin ꢃ  
VOUT.  
ꢀ(Adj)  
ADJ  
Adjustable (Input): Adjustable regulator feed-  
back input. Connect to a resistive voltage-  
divider network.  
2(fixed)  
BYP  
Reference bypass input for ultra-quiet operation.  
Connecting a ꢀ0nF cap on this pin reduces  
output noise.  
2(Adj)  
NC  
GND  
EN  
No Connect  
Ground  
3
Enable/Shutdown (Logic high = enable, logic  
low = shutdown)  
5
6
7
VIN  
NC  
Power Supply Input  
No Connect  
NC  
No Connect  
VOUT  
Regulator Output VoltageA  
PꢀNOUT 8 PꢀN DFN  
FꢀXED  
ADJUSTABLE  
VOUT  
2
VOUT  
V
ADJ  
NC  
OUT  
SP6203  
SP6205  
SP6203  
SP6205  
BYP  
7
6
5
2
3
NC  
NC  
7
6
5
NC  
NC  
GND  
3
GND  
EN  
8 Pin DFN  
8 Pin DFN  
VIN  
EN  
V
IN  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
5
TYPꢀCAL PERFORMANCE CHARACTERꢀSTꢀCS  
V
OUT  
V
OUT  
I
(200mA/DIV)  
O
V
EN  
Current Limit  
Turn on Time, RLOAD = 501 (60mA)  
V
OUT  
V
OUT  
V
EN  
V
EN  
Turn off Time, RLOAD = 30K (0.1mA)  
Turn off Time, RLOAD = 61 (500mA)  
VOUT (AC)  
VOUT (AC)  
VꢀN  
OUT  
Load Regulation, IO = 100µA ~ 500mA  
Line Regulation, Line Step from 4V to 6V, IO = 1mA  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
6
TYPꢀCAL PERFORMANCE CHARACTERꢀSTꢀCS: Continued  
V
IN  
V
EN  
V
OUT  
V
OUT  
V
= 3.5V, I = 500mA  
O
IN  
BYP  
Start Up Waveform, VIN = 3.5V, IO = 500mA  
Start Up Waveform, Slow VIN , No Load  
V
IN  
V
IN  
V
OUT  
V
OUT  
BYP  
BYP  
Start Up Waveform, Slow VIN , 500mA Output Load  
Start Up Waveform, Slow VIN , COUT=1000µF, IO=0mA  
V
IN  
V
IN  
V
OUT  
V
OUT  
BYP  
BYP  
Start Up Waveform, Slow VIN, COUT=1000µF, IO=500mA  
Fast VIN , No Load  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
7
TYPꢀCAL PERFORMANCE CHARACTERꢀSTꢀCS: Continued  
V
IN  
V
OUT  
BYP  
Fast VIN , 500mA Output Load  
Fast VIN = 1000µF Output Load  
V
IN  
V
OUT  
BYP  
Fast VIN , COUT=1000µF, IO=500mA  
Output Noise (uVrms), Cbyp = 10nF  
Output Noise (uVrms), Cbyp = open  
ꢀ000  
ꢃ00  
600  
ꢂ00  
200  
0
50  
ꢂ0  
30  
20  
ꢀ0  
0
0.ꢀ  
ꢀ0  
ꢀ00  
ꢀ000  
0.ꢀ  
ꢀ0  
ꢀ00  
ꢀ000  
Output current (mA)  
Output current (mA)  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
THEORY OF OPERATꢀON  
General Overview  
Output Capacitor  
The SP6203/6205 is intended for applications  
where very low dropout voltage, low supply  
current and low output noise are critical, even  
with high load conditions (500mA maximum).  
An output capacitor is required between VOUT  
and GND to prevent oscillation. A 2.2µF output  
capacitor is recommended.  
Larger values make the chip more stable which  
means an improvement of the regulator’s tran-  
sient response. Also, when operating from other  
sources than batteries, supply-noise rejection  
can be improved by increasing the value of the  
input and output capacitors and using passive  
filtering techniques.  
Unlike bipolar regulators, the SP6203/6205  
(CMOS LDO) supply current increases only  
slightly with load current.  
The SP6203/6205 contains an internal bandgap  
reference which is fed into the inverting input of  
the LDO-amplifier. The output voltage is then  
set by means of a resistor divider and compared  
to the bandgap reference voltage. The error  
LDO-amplifier drives the gate of a P-channel  
MOSFET pass device that has a RDS(ON) of 0.61  
at 500mA producing a 300mV drop at the out-  
put.  
For a lower output current, a smaller output  
capacitance can be chosen.  
Finally, the output capacitor should have an  
effectiveseriesresistance(ESR)of0.51orless.  
Therefore, the use of good quality ceramic or  
tantalum capacitors is advised.  
Furthermore, the SP6203/6205 has its own cur-  
rent limit circuitry (500mA/850mA) to ensure  
that the output current will not damage the  
device during output short, overload or start-up.  
Bypass Capacitor  
A bypass pin (BYP) is provided to decouple the  
bandgap reference. A 10nF external capacitor  
connected from BYP to GND reduces noise  
present on the internal reference, which in turn  
significantly reduces output noise and also im-  
proves power supply rejection. Note that the  
minimum value of COUT must be increased to  
maintain stability when the bypass capacitor is  
used because CBYP reduces the regulator phase  
margin. If output noise is not a concern, this  
input may be left unconnected. Larger capacitor  
values may be used to further improve power  
supply rejection, but result in a longer time  
period (slower turn on) to settle output voltage  
when power is initially applied.  
Also, the SP6203/6205 includes thermal shut-  
down circuitry to turn off the device when the  
junction temperature exceeds 170°C and it re-  
mains off until the temperature drops by 12°C.  
Enable/Shutdown Operation  
The SP6203/6205 is turned off by pulling the  
VEN pin below 0.4V and turned on by pulling it  
above 1.6V.  
If this enable/shutdown feature is not required,  
it should be tied directly to the input supply  
voltage to keep the regulator output on at all  
time.  
While in shutdown, VOUT quickly falls to zero  
(turn-off time is dependent on load conditions  
and output capacitance on VOUT) and power  
consumption drops nearly to zero.  
No Load Stability  
The SP6203/6205 will remain stable and in  
regulation with no external load (other than the  
internal voltage driver) unlike many other volt-  
age regulators. This is especially important in  
CMOS RAM battery back-up applications.  
ꢀnput Capacitor  
A small capacitor of 2.2µF is required from VIN  
to GND if a battery is used as the power  
source. Any good quality electrolytic, ceramic  
or tantalum capacitor may be used at the input.  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
THEORY OF OPERATꢀON: Continued  
Turn On Time  
TJ(max) is the maximum junction temperature of  
the die and is 125°C. TA is the ambient tempera-  
ture. eJA is the junction-to-ambient thermal re-  
sistance for the regulator and is layout depen-  
dent. The SOT-23-5 package has a eJA of  
approximately 256°C/W for minimum PCB  
copper footprint area.  
The turn on response is split up in two separate  
response categories: the wake up time (TWU  
)
and the settlling time (TS). The wake up time is  
defined as the time it takes for the output to rise  
to 2% of its total value after being released from  
shutdown (EN > 0.4V). The settling time is  
definedastheconditionwheretheoutputreaches  
98% of its total value after being released from  
shutdown. The latter is also called the turn on  
time and is dependent on the output capacitor, a  
little bit on load and, if present, on a bypass  
capacitor.  
This results in a maximum power dissipation of:  
PD(max) = [(125°C - 25°C)/(191°C/W)] = 523mW  
The actual power dissipation of the regulator  
circuit can be determined using one simple  
equation:  
PD = (VIN - VOUT) * IOUT + VIN * IGND  
t(s) = T(on)  
V
ENABLE  
To prevent the device from entering thermal  
shutdown. maximum power dissipation can not  
be exceeded.  
ꢁꢃ%  
2%  
t(wu)  
V
OUT  
Substituting PD(max) for PD and solving for the  
operating conditions that are critical to the ap-  
plication will give the maximum operating con-  
ditions for the regulator circuit. For example, if  
we are operating the SP6203 3.0V at room  
temperature, with a minimum footprint layout  
and and output current of 300mA, the maximum  
input voltage can be determined, based on the  
equationbelow.Groundpincurrentcanbetaken  
from the electrical specifications table (0.23mA  
at 300mA).  
Turn Off Time  
The turn off time is defined as the condition  
where the output voltage drops about 66% (e) of  
its total value. 5e to 7e is the constant where the  
output voltage drops nearly to zero. There will  
always be a small voltage drop in shutdown  
because of the switch unless we short-circuit it.  
The turn off time of the output voltage is depen-  
dent on load conditions, output capacitance on  
VOUT (time constant o = RLCL) and also on the  
difference in voltage between input and output.  
390mW = (VIN-3.0V) * 300mA + VIN *0.23mA  
After calculations, we find that the maximum  
input voltage of a 3.0V application at 300mA of  
output current in a SOT-23-5 package is 4.7V.  
Thermal Considerations  
The SP6203/6205 is designed to provide 300/  
500 mA of continuous current in a tiny package.  
Maximum power dissipation can be calculated  
based on the output current and the voltage drop  
across the part. To determine the maximum  
power dissipation of the package, use the junc-  
tion-to-ambient thermal resistance of the device  
and the following basic equation:  
So if the intend is to operate a 5V output version  
from a 6V supply at 300mA load and at a 25°C  
ambienttemperature,thentheactualtotalpower  
dissipation will be:  
PD=([6V-5V]*[300mA])+(6V*0.23mA)=301.4mW  
This is well below the 523mW package maxi-  
mum. Therefore, the regulator can be used.  
PD = (TJ(max) - TA) / eJA  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀ0  
THEORY OF OPERATꢀON: Continued  
Layout Considerations  
Note that the regulator cannot always be used at  
its maximum current rating. For example, in a  
5V input to 3.0V output application at an ambi-  
ent temperature of 25°C and operating at the full  
500mA (IGND = 0.355mA) load, the regulator is  
limited to a much lower load current, deter-  
mined by the following equation:  
The primary path of heat conduction out of the  
package is via the package leads. Therefore,  
careful considerations have to be taken into  
account:  
1) Attaching the part to a larger copper footprint  
will enable better heat transfer from the device,  
especially on PCB’s where there are internal  
ground and power planes.  
523mW = ( [5V-3V]*[ Iload(max)]) +(5V*0.350mA)  
After calculation, we find that in such an appli-  
cation (SP6205) the regulator is limited to  
260.6mA. Doing the same calculations for the  
300mALDO(SP6203)willlimittheregulator’s  
output current to 260.9mA.  
2) Place the input, output and bypass capacitors  
close to the device for optimal transient re-  
sponse and device behavior.  
3) Connect all ground connections directly to  
the ground plane. In case there’s no ground  
plane, connect to a common local ground point  
before connecting to board ground.  
Also, taking advantage of the very low dropout  
voltage characteristics of the SP6203/6205,  
power dissipation can be reduced by using the  
lowest possible input voltage to minimize the  
input-to-output drop.  
Such layouts will provide a much better thermal  
conductivity (lower eJA) for, a higher maximum  
allowable power dissipation limit.  
Adjustable Regulator Applications  
The SP6203/6205 can be adjusted to a specific  
output voltage by using two external resistors  
(see functional diagram). The resistors set the  
output voltage based on the following equation:  
VOUT = VREF *(R1/R2 + 1)  
Resistor values are not critical because ADJ  
(adjust) has a high input impedance, but for best  
performance use resistors of 470K1 or less. A  
bypass capacitor from ADJ to VOUT provides  
improved noise performance.  
Dual-Supply Operation  
When used in dual supply systems where the  
regulator load is returned to a negative supply,  
the output voltage must be diode clamped to  
ground.  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀꢀ  
PACKAGE: 5Pin SOT-23  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀ2  
PACKAGE: 8Pin DFN  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀ3  
ORDERꢀNG ꢀNFORMATꢀON  
Top  
Marking  
N2WW  
N2WW  
L2WW  
L2WW  
G2WW  
G2WW  
Q3WW  
Q3WW  
H2WW  
H2WW  
M2WW  
M2WW  
J2WW  
Temperature Voltage Package  
Part Number  
Range  
Option  
ꢀ.ꢃV  
ꢀ.ꢃV  
2.5V  
2.5V  
2.7V  
2.7V  
2.ꢃV  
2.ꢃV  
Type  
SP6203EM5-ꢀ-ꢃ  
SP6203EM5-ꢀ-ꢃ/TR  
SP6203EM5-2-5  
SP6203EM5-2-5/TR  
SP6203EM5-2-7  
SP6203EM5-2-7/TR  
SP6203EM5-2-ꢃ  
SP6203EM5-2-ꢃ/TR  
SP6203EM5-2-ꢃ5  
SP6203EM5-2-ꢃ5/TR  
SP6203EM5-3-0  
SP6203EM5-3-0/TR  
SP6203EM5-3-3  
SP6203EM5-3-3/TR  
SP6203EM5  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
-40˚C to +125˚C 2.ꢃ5V 5 Pin SOT-23  
-40˚C to +125˚C 2.ꢃ5V 5 Pin SOT-23  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
3.0V  
3.0V  
3.3V  
3.3V  
ADJ  
ADJ  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
J2WW  
Q2WW  
Q2WW  
SP6203EM5/TR  
SP6203ER-ꢀ-ꢃ  
SP6203ER-ꢀ-ꢃ/TR  
SP6203ER-2-5  
SP6203ER-2-5/TR  
SP6203ER-2-7  
SP6203ER-2-7/TR  
SP6203ER-2-ꢃ  
SP6203ER-2-ꢃ/TR  
SP6203ER-2-ꢃ5  
SP6203ER-2-ꢃ5/TR  
SP6203ER-3-0  
SP6203ER-3-0/TR  
SP6203ER-3-3  
SP6203ER-3-3/TR  
SP6203ER  
6203ꢀꢃYWW -40˚C to +125˚C  
6203ꢀꢃYWW -40˚C to +125˚C  
620325YWW -40˚C to +125˚C  
620325YWW -40˚C to +125˚C  
620327YWW -40˚C to +125˚C  
620327YWW -40˚C to +125˚C  
62032ꢃYWW -40˚C to +125˚C  
62032ꢃYWW -40˚C to +125˚C  
ꢀ.ꢃV  
ꢀ.ꢃV  
2.5V  
2.5V  
2.7V  
2.7V  
2.ꢃV  
2.ꢃV  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
6203ꢃ5YWW -40˚C to +125˚C 2.ꢃ5V  
6203ꢃ5YWW -40˚C to +125˚C 2.ꢃ5V  
620330YWW -40˚C to +125˚C  
620330YWW -40˚C to +125˚C  
620333YWW -40˚C to +125˚C  
620333YWW -40˚C to +125˚C  
6203ERYWW -40˚C to +125˚C  
6203ERYWW -40˚C to +125˚C  
3.0V  
3.0V  
3.3V  
3.3V  
ADJ  
ADJ  
SP6203ER/TR  
Solved by  
TM  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀꢂ  
ORDERꢀNG ꢀNFORMATꢀON  
Top  
Marking  
X2WW  
X2WW  
V2WW  
V2WW  
R2WW  
R2WW  
E3WW  
E3WW  
S2WW  
S2WW  
W2WW  
W2WW  
T2WW  
T2WW  
A3WW  
A3WW  
Temperature Voltage Package  
Part Number  
Range  
Option  
ꢀ.ꢃV  
ꢀ.ꢃV  
2.5V  
2.5V  
2.7V  
2.7V  
2.ꢃV  
2.ꢃV  
Type  
SP6205EM5-ꢀ-ꢃ  
SP6205EM5-ꢀ-ꢃ/TR  
SP6205EM5-2-5  
SP6205EM5-2-5/TR  
SP6205EM5-2-7  
SP6205EM5-2-7/TR  
SP6205EM5-2-ꢃ  
SP6205EM5-2-ꢃ/TR  
SP6205EM5-2-ꢃ5  
SP6205EM5-2-ꢃ5/TR  
SP6205EM5-3-0  
SP6205EM5-3-0/TR  
SP6205EM5-3-3  
SP6205EM5-3-3/TR  
SP6205EM5  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
-40˚C to +125˚C  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
2.ꢃ5V 5 Pin SOT-23  
2.ꢃ5V 5 Pin SOT-23  
3.0V  
3.0V  
3.3V  
3.3V  
ADJ  
ADJ  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
5 Pin SOT-23  
SP6205EM5 /TR  
SP6205ER-ꢀ-ꢃ  
SP6205ER-ꢀ-ꢃ/TR  
SP6205ER-2-5  
SP6205ER-2-5/TR  
SP6205ER-2-7  
SP6205ER-2-7/TR  
SP6205ER-2-ꢃ  
SP6205ER-2-ꢃ/TR  
SP6205ER-2-ꢃ5  
SP6205ER-2-ꢃ5/TR  
SP6205ER-3-0  
SP6205ER-3-0/TR  
SP6205ER-3-3  
SP6205ER-3-3/TR  
SP6205ER  
6205ꢀꢃYWW -40˚C to +125˚C  
6205ꢀꢃYWW -40˚C to +125˚C  
620525YWW -40˚C to +125˚C  
620525YWW -40˚C to +125˚C  
620527YWW -40˚C to +125˚C  
620527YWW -40˚C to +125˚C  
62052ꢃYWW -40˚C to +125˚C  
62052ꢃYWW -40˚C to +125˚C  
6205ꢃ5YWW -40˚C to +125˚C  
6205ꢃ5YWW -40˚C to +125˚C  
620530YWW -40˚C to +125˚C  
620530YWW -40˚C to +125˚C  
620533YWW -40˚C to +125˚C  
620533YWW -40˚C to +125˚C  
6205ERYWW -40˚C to +125˚C  
6205ERYWW -40˚C to +125˚C  
ꢀ.ꢃV  
ꢀ.ꢃV  
2.5V  
2.5V  
2.7V  
2.7V  
2.ꢃV  
2.ꢃV  
2.ꢃ5V  
2.ꢃ5V  
3.0V  
3.0V  
3.3V  
3.3V  
ADJ  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
ꢃ Pin DFN  
SP6205ER /TR  
Solved by  
ADJ  
TM  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀ5  
For further assistance:  
Application note and calculator file for Thermal considerations with Linear  
Regulators:  
ANP 2  
ANP 3  
Email:  
LDO Thermal Considerations for Linear Regulators  
LDO Linear Regulator Heat Calculator  
Sipexsupport@sipex.com  
[PDF]  
[Excel]  
WWW Support page:  
http://www.sipex.com/content.aspx?p=support  
Sipex Application Notes: http://www.sipex.com/applicationNotes.aspx  
Solved by  
Sipex Corporation  
Headquarters and  
TM  
Sales Office  
233 South Hillview Drive  
Milpitas, CA ꢁ5035  
TEL: (ꢂ0ꢃ) ꢁ3ꢂ-7500  
FAX: (ꢂ0ꢃ) ꢁ35-7600  
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume  
any liability arising out of the application or use of any product or circuit described herein; neither does it convey  
any license under its patent rights nor the rights of others.  
Date: Apr2-07  
SP6203/SP6205 Low Noise, 300 and 500mA CMOS LDO Regulators  
© 2007 Sipex Corporation  
ꢀ6  

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