SP6205EM5-L-1-8 [EXAR]
IC REG LINEAR 500MA SOT23-5;
| 型号： | SP6205EM5-L-1-8 |
| 厂家： | 
EXAR CORPORATION |
| 描述： | IC REG LINEAR 500MA SOT23-5 |
| 文件： | 总15页 (文件大小：1316K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
May 17, 2021
Rev. 2.0.2
GENERAL DESCRIPTION
APPLICATIONS
The SP6203 and SP6205 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 speed critical
to portable applications. Extremely stable and
easy to use, these devices offer excellent
PSRR and Line/Load regulation. Target
• Battery-Powered Systems
• Medical Equipments
• MP3/CD Players
• Digital Cameras
FEATURES
applications
include
battery-powered
• 300mA/500mA Output Current
− SP6203: 300mA – SP6205: 500mA
− Low Dropout Voltage: 0.6Ω PMOS FET
equipment such as portable and wireless
products. Regulators' ground current increases
only slightly in dropout. Fast turn-on/turn-off
enable control and an internal 30Ω pull down
on output allows quick discharge of output
even under no load conditions. Both LDOs are
protected with current limit and thermal
shutdown.
• 2.7V to 5.5V Input Voltage
− Fixed and Adjustable Output Voltage
− Accurate Output Voltage: 2% over Temp.
• 67dB Power Supply Rejection Ratio
• 12μVRMS Low Output Noise
The SP6205 is available in fixed & adjustable
output voltage versions and come in an
industry standard 5-pin SOT-23 and small
2X3mm 8-pin DFN packages. For SC-70
100mA CMOS LDO, SP6213 is available.
• Unconditionally Stable with 2.2μF
Ceramic
• Low Quiescent Current: 45μA
• Low Ground Current: 350μA at 500mA
• Fast Turn-On and Turn-Off: 60μS
• Very Good Load/Line Regulation:
0.07/0.04 %
• Current Limit and Thermal Protection
• RoHS Compliant “Green”/Halogen Free
5-Pin SOT23 and 8-Pin DFN Packages
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP6203/SP6205 Application Diagram
1
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
ABSOLUTE MAXIMUM RATINGS
OPERATING RATINGS
These are stress ratings only and functional operation of
the device at these 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.
Input Voltage Range VIN.......................... +2.7V to +5.5V
Enable Input Voltage VEN................... ...............0 to 5.5V
Junction Temperature Range................. -40°C to +125°C
Thermal Resistance......................................................
SOT-23-5 (θJA) .............................................191°C/W
DFN-8 (θJA) ................................................... 59°C/W
VIN..............................................................-2V to 6.0V
Output Voltage VOUT .............................. -0.6V to VIN +1V
Enable Input Voltage VEN.................. ...............-2V to 6V
Storage Temperature..............................-65°C to 150°C
Power Dissipation...............................Internally Limited1
Lead Temperature (Soldering, 5 sec) ...................+260°C
Junction Temperature ........................................+150°C
Note 1: Maximum power dissipation can be calculated
using the formula: PD = (TJ (max) - TA) / θJA, where
TJ(max) is the junction temperature, TA is the ambient
temperature and θJA is the junction-to-ambient thermal
resistance. θJC 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.
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for
reference purposes only. Unless otherwise indicated, VIN = (VOUT + 0.5V) to 6V, CIN = 2.2µF, COUT = 2.2µF and IOUT = 100µA,
TJ= –40°C to 85°C.
Parameter
Input Voltage
Min.
Typ.
Max.
Units
Conditions
•
•
6
V
Output Voltage
+2
%
Variation from specified VOUT
-2
Output Voltage
50
ppm/°C
∆ VOUT/∆T
Temperature Coefficient2
•
Reference Voltage
Line Regulation
1.25
0.04
1.275
0.3
V
Adjustable version only
1.225
%/V
∆VOUT (VIN below 6V)
0.07
0.13
0.3
0.5
IOUT = 0.1mA to 300mA (SP6203)
IOUT = 0.1mA to 500mA (SP6205)
Load Regulation3
%
0.06
60
120
180
300
IOUT = 0.1mA
IOUT = 100mA
IOUT = 200mA
IOUT = 300mA (SP6203)
IOUT = 500mA (SP6205)
Dropout Voltage for VOUT ≥ 3.0V4
mV
300
500
•
•
•
45
100
IOUT = 0.1mA (IQUIESCENT
IOUT = 100mA
IOUT = 200mA
IOUT = 300mA (SP6203)
IOUT = 500mA (SP6205)
)
110
175
235
350
Ground Pin Current5
µA
•
•
330
490
•
Shutdown Supply Current
Current Limit
0.01
1
µA
A
VEN < 0.4V (shutdown)
0.50
0.85
0.8
1.4
VOUT = 0V (SP6203)
VOUT = 0V (SP6205)
0.33
0.55
Thermal Shutdown Junction
Temperature
170
°C
Regulator Turns off
Thermal Shutdown Hysteresis
Power Supply Rejection Ratio
12
67
°C
dB
Regulator turns on again at 158°C
f ≤ 1kHz
150
630
12
CBYP = 0nF, IOUT = 0.1mA
CBYP = 0nF, IOUT = 300mA
CBYP = 10nF, IOUT = 0.1mA
CBYP = 10nF, IOUT = 300mA
Output Noise Voltage6
µVRMS
50
75
50
Thermal Regulation7
0.05
%/W
µS
∆VOUT / ∆PD
VIN ≥ 4V10
IOUT = 30mA
8
Wake-Up Time (TWU
)
25
(from shutdown mode)
210DSR00
2
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
Parameter
Min.
Typ.
Max.
Units
Conditions
Turn-On Time (TON)9
(from shutdown mode)
VIN ≥ 4V10
IOUT = 30mA
60
120
µS
100
15
250
25
IOUT = 0.1mA, VIN ≥ 4V10
Turn-Off Time (TOFF
)
µS
IOUT = 300mA, VIN ≥ 4V10
Output Discharge Resistance
Enable Input Logic Low Voltage
Enable Input Logic High Voltage
30
Ω
V
V
No Load
•
•
0.4
Regulator Shutdown
Regulator Enabled
1.6
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 1V 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 10Hz < BW < 100kHz. An external bypass cap
(10nF) 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 = 1ms.
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 4V, timing (TON & TOFF) increases slightly.
BLOCK DIAGRAM
Fig. 2: SP6203/SP6205 Functional Diagram
210DSR00
3
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
PIN ASSIGNMENT
5-Pin SOT23
8-Pin DFN
Fig. 3: SP6203/SP6205 Pin Assignment
PIN DESCRIPTION
Name
SOT-23-5
Description
1
2
Power Supply Input
VIN
Ground Terminal
GND
Enable/Shutdown
- Logic high = enable
- Logic low = shutdown
3
EN
Bypass - Fixed voltage option:
Reference bypass input for ultra-quiet operation. Connecting a 10nF cap on this pin reduces
output noise.
4
5
BYP/ADJ
VOUT
Adjustable Input – Adjustable voltage option:
Adjustable regulator feedback input. Connect to a resistive voltage-
Divider network.
Regulator Output Voltage
Name
DFN-8
Description
Adjustable Input – Adjustable voltage option:
Adjustable regulator feedback input. Connect to a resistive voltage-
Divider network.
1
ADJ
2
3
No Connect
NC
Ground Terminal
GND
Enable/Shutdown
- Logic high = enable
- Logic low = shutdown
4
EN
5
6
7
8
Power Supply Input
No Connect
VIN
NC
No Connect
NC
Regulator Output Voltage
VOUT
210DSR00
4
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
ORDERING INFORMATION
Ambient Temperature
Part Number
Lead-Free
Package
Packing Method
Voltage Option
Range
SP6203EM5-L-2-8/TR
SP6205EM5-L/TR
2.8V
ADJ
SOT-23-5
DFN8
Tape & Reel
SP6205EM5-L-3-0/TR
SP6205EM5-L-3-3/TR
SP6205ER-L/TR
Yes
3.0V
3.3V
ADJ
-40°C≤TA≤+125°C
NOTE: For the most up-to-date ordering information and additional information on environment rating, go to
www.maxlinear.com/SP6203 and www.maxlinear.com/SP6205.
210DSR00
5
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at VIN = 2.7V to 5.5V, TJ = TA = 25°C, unless otherwise specified - Schematic and BOM from Application
Information section of this datasheet.
Fig. 4: Current Limit
Fig. 5: Turn-On Time, RLOAD=50Ω (60mA)
Fig. 7: Turn-Off Time, RLOAD=30KΩ (0.1mA)
Fig. 9: Regulation, Line Step from 4V to 6V, IO=1mA
Fig. 6: Turn-Off Time, RLOAD=6Ω (500mA)
Fig. 8: Load Regulation, IO=100µA ~500mA
210DSR00
6
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
Fig. 11: Start Up Waveform, Slow VIN , No Load
Fig. 10: Start Up Waveform, VIN=3.5V, IO=500mA
Fig. 13: Start Up Waveform, Slow VIN, COUT=1000μF, IO=0mA
Fig. 12: Start Up Waveform, Slow VIN, 500mA Output Load
Fig. 14: Start Up Waveform, Slow VIN,
OUT=1000μF, IO=500mA
Fig. 15: Fast VIN, No Load
C
210DSR00
7
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
Fig. 17: Fast VIN = 1000μF Output Load
Fig. 16: Fast VIN, 500mA Output Load
Fig. 18: Fast VIN , COUT=1000μF, IO=500mA
Fig. 19: Output Noise, CBYP = 10nF
Fig. 20: Output Noise, CBYP = open
210DSR00
8
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
or tantalum capacitor may be used at the
input.
THEORY OF OPERATION
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).
Unlike bipolar regulators, the SP6203/6205
(CMOS LDO) supply current increases only
slightly with load current.
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 transient response. Also, when
operating from other sources than batteries,
supply-noise rejection can be improved by
increasing the value of the input and output
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 0.6Ω at 500mA
producing a 300mV drop at the output.
capacitors
and
using
passive
filtering
techniques.
For a lower output current, a smaller output
capacitance can be chosen.
Finally, the output capacitor should have an
effective series resistance (ESR) of 0.5Ω or
less.
Furthermore, the SP6203/6205 has its own
current limit circuitry (500mA/850mA) to
ensure that the output current will not damage
the device during output short, overload or
start-up.
Therefore, the use of good quality ceramic or
tantalum capacitors is advised.
BYPASS CAPACITOR
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.
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 improves 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.
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
voltage regulators. This is especially important
in CMOS RAM battery back-up applications.
INPUT 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
210DSR00
9
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
T
J(max) is the maximum junction temperature of
TURN ON TIME
the die and is 125°C. TA is the ambient
temperature. θJA is the junction-to-ambient
thermal resistance for the regulator and is
layout dependent. The SOT-23-5 package has
a θJA of approximately 191°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 settling 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
>
This results in a maximum power dissipation
of:
0.4V). The settling time is defined as the
condition where the output reaches 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.
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
To prevent the device from entering thermal
shutdown, maximum power dissipation cannot
be exceeded.
Substituting PD(max) for PD and solving for the
operating conditions that are critical to the
application will give the maximum operating
conditions for the regulator circuit. For
example, if we are operating the SP6203 3.0V
at room temperature, with a minimum
footprint layout and output current of 300mA,
TURN OFF TIME
The turn off time is defined as the condition
where the output voltage drops about 66% (θ)
of its total value. 5θ to 7θ 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 dependent on load conditions,
the
maximum
input
voltage
can
be
determined, based on the equation below.
Ground pin current can be taken from the
electrical specifications table (0.23mA at
300mA).
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.
output capacitance on VOUT (time constant τ =
RLCL) and also on the difference in voltage
between input and output.
So if the intent is to operate a 5V output
version from a 6V supply at 300mA load and
at a 25°C ambient temperature, then the
actual total power dissipation will be:
THERMAL CONSIDERATIONS
The SP6203/6205 is designed to provide
300/500mA 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,
PD=([6V-5V]*[300mA])+(6V*0.23mA)=301.4mW
This is well below the 523mW package maxi-
mum. Therefore, the regulator can be used.
use
the
junction-to-ambient
thermal
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
ambient temperature of 25°C and operating at
the full 500mA (IGND=0.355mA) load, the
resistance of the device and the following
basic equation:
PD = (TJ(max) - TA) / θJA
210DSR00
10
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
regulator is limited to a much lower load
current, determined by the following equation:
LAYOUT CONSIDERATIONS
The primary path of heat conduction out of the
package is via the package leads. Therefore,
careful considerations have to be taken into
account:
523mW = ( [5V-3V]*[ Iload(max)]) +(5V*0.350mA)
After calculation, we find that in such an
application (SP6205) the regulator is limited to
260.6mA. Doing the same calculations for the
300mA LDO (SP6203) will limit the regulator’s
output current to 260.9mA.
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.
2) Place the input, output and bypass
capacitors close to the device for optimal
transient response and device behavior.
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.
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.
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:
Such layouts will provide a much better
thermal conductivity (lower θJA) for, a higher
maximum allowable power dissipation limit.
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 470KΩ or
less.
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.
210DSR00
11
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
MECHANICAL DIMENSIONS
8-PIN DFN 2X3
210DSR00
12
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
RECOMMENDED LAND PATTERN AND STENCIL
8-PIN DFN 2X3
210DSR00
13
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
MECHANICAL DIMENSIONS
5-PIN SOT-23
210DSR00
14
Rev. 2.0.2
SP6203 / SP6205
300mA/500mA Low Noise CMOS LDO Regulators
REVISION HISTORY
Date
Revision
Description
Reformatted Data Sheet
Includes top package marking update.
2.0.0
April 3, 2012
Updated to MaxLinear logo. Updated format and Ordering Information. Updated
Adjustable Regulator Applications section. Removed obsolete Fixed Voltage DFN option.
Corrected output noise voltage conditions in Electrical Specifications.
2.0.1
2.0.2
August 31, 2018
May 17, 2021
Replaced low quiescent current value with 45μA in the Features section.
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210DSR00
15
Rev. 2.0.2
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SIPEX
SP6205EM5-L-2-85/TR
Fixed Positive LDO Regulator, 2.85V, CMOS, PDSO5, LEAD FREE, MO-178AA, SOT-23, 5 PINWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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SIPEX
SP6205EM5-L-2.5
Fixed Positive LDO Regulator, 2.5V, 0.5V Dropout, CMOS, PDSO5, SOT-23, 5 PINWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
EXAR
SP6205EM5-L-2.5/TR
Fixed Positive LDO Regulator, 2.5V, 0.5V Dropout, CMOS, PDSO5, SOT-23, 5 PINWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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EXAR
SP6205EM5-L-2.8
Fixed Positive LDO Regulator, 2.8V, 0.5V Dropout, CMOS, PDSO5, SOT-23, 5 PINWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
EXAR
SP6205EM5-L-2.8/TR
Fixed Positive LDO Regulator, 2.8V, 0.5V Dropout, CMOS, PDSO5, SOT-23, 5 PINWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
EXAR
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