FP6128-FWDC [FITIPOWER]
300mA, High PSRR, Dual Output Low-Dropout Regulator;
| 型号： | FP6128-FWDC |
| 厂家： | 
Fitipower |
| 描述： | 300mA, High PSRR, Dual Output Low-Dropout Regulator |
| 文件： | 总11页 (文件大小：626K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
fitipower integrated technology lnc.
FP6128
300mA, High PSRR, Dual Output Low-Dropout Regulator
with Fast Output Discharge Function
Description
Features
FP6128 is a dual output, low dropout, high PSRR,
low quiescent current linear regulators with fast
output discharge function. FP6128 can supply
200mA output current with a lower dropout voltage
about 300mV for each channel.
Low Dropout Voltage: 300mV at IOUT=200mA
Guaranteed 300mA Output Current Per Channel
Very Low Quiescent Current: 25μA
High Power Supply Rejection Ratio: 70dB at
10kHz
Highly Accurate: 2%
FP6128 is suitable for portable and wireless
application such as mobile phone and portable
hand-sets. FP6128 is designed and optimized to
work with low-value, low cost ceramic capacitors.
FP6128 consumes less than 0.1μA during shutdown
mode which is independent for each channel,
allowing for flexibility in power management.
Besides its current limit protection and on chip
thermal shutdown features provide protection
against any combination of overload or ambient
temperature that could exceed junction temperature.
Needs Only 1µF Ceramic Capacitor for Stability
Thermal Shutdown and Current Limiting
Protection
Output Discharge Function
Tiny SOT-23-6 and TDFN-6 Packages
RoHS Compliant
Applications
Mobile Phone
Portable or Wireless Instrument
Camera
PDA and Notebook Computer
FP6128 can discharge the output voltage very fast
when the device is disabled.
FP6128 doesn’t need external bypass capacitor and
still could get better noise performance.
Tiny
SOT-23-6 and TDFN-6 packages are attractive for
hand-held applications.
Pin Assignment
Ordering Information
S6 Package (SOT-23-6)
FP6128-□□□□
GNDVOUT2
VOUT1
TR: Tape/Reel
6
5
4
3
C: Green
(Marking)
1
2
Package Type
S6: SOT-23-6
WD: TDFN-6 (1.6mm×1.6mm)
EN1 VIN EN2
WD Package (TDFN-6) (1.6mm×1.6mm)
Output Voltage
1
2
3
6
5
4
VOUT2
VOUT1
GND
EN2
VIN
VOUT1
VOUT2
GND
F
1.8V
2.8V
EN1
SOT-23-6 Marking
Part Number
Figure 1. Pin Assignment of FP6128
Product Code
FC6
FP6128-FS6C
TDFN-6 (1.6mm×1.6mm) Marking
Part Number
Product Code
FP6128-FWDC
A
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FP6128
Typical Application Circuit
VIN
EN1
VIN
VOUT1
VOUT1
FP6128
COUT1
1μF
GND
CIN
1μF
EN2
VOUT2
VOUT2
COUT2
1μF
Figure 2. Typical Application Circuit of FP6128
Note：To prevent oscillation, it is recommended to use minimum 1µF X7R or X5R dielectric capacitors if ceramics are
used as input/output capacitors.
Functional Pin Description
Pin No.
(SOT-23-6)
Pin No.
(TDFN-6)
Pin Name
Pin Function
Logic input control VOUT2 active or shut off. The enable pin can’t be left floating and must
be tied to the Vin pin if not used. The shutdown mode which is independent for each
channel, allowing for flexibility in power management.
EN2
3
2
1
5
1
2
3
4
Power is supplied to this device from this pin which requires an input filter capacitor. In
general, the input capacitor in the range of 1µF to 10µF is sufficient.
VIN
Logic input control VOUT1 active or shut off. The enable pin can’t be left floating and must
be tied to the Vin pin if not used. The shutdown mode which is independent for each
channel, allowing for flexibility in power management.
EN1
GND
Common ground pin
The output supplies power to loads. The output capacitor is required to prevent output
voltage unstable. The FP6128 is stable with an output capacitor 1µF or greater. The
larger output capacitor will be required for application with large transit load to limit peak
voltage transits, besides could reduce output noise, improve stability and PSRR.
VOUT1
VOUT2
6
4
5
6
The output supplies power to loads. The output capacitor is required to prevent output
voltage unstable. The FP6128 is stable with an output capacitor 1µF or greater. The
larger output capacitor will be required for application with large transit load to limit peak
voltage transits, besides could reduce output noise, improve stability and PSRR.
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FP6128
Absolute Maximum Ratings
● Supply Input Voltage (VIN) ------------------------------------------------------------------------------------- +6V
● Other Pin Voltage (EN1, EN2, VOUT1, VOUT2) ---------------------------------------------------------- +6V
● Maximum Junction Temperature (TJ) ------------------------------------------------------------------------ +150ºC
● Power Dissipation @25ºC, (PD)
SOT-23-6 ------------------------------------------------------------------------------------------- +0.4W
+0.63W
TDFN-6 (1.6mm×1.6mm) -----------------------------------------------------------------------
● Package Thermal Resistance, (θJA)
SOT-23-6 ------------------------------------------------------------------------------------------- +250ºC/W
+160ºC/W
TDFN-6 (1.6mm×1.6mm) -----------------------------------------------------------------------
● Storage Temperature Range (TS) ----------------------------------------------------------------------------- -65ºC to +150ºC
● Lead Temperature (Soldering, 10 sec.) (TLEAD) ------------------------------------------------------------ +260ºC
Note1：Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
Recommended Operating Conditions
● Input Voltage (VIN) ------------------------------------------------------------------------------------------------ +2.0V to +5.5V
● Operating Temperature Range (TOPR) ----------------------------------------------------------------------- -40ºC to +85ºC
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FP6128
Block Diagram
RSEN1
PMOS
VIN
VOU
Current Limit
R1
Error Amp
ON/OFF
Control
EN1
Thermal
Shutdown
R2
Vref
Discharge
Logic
NMOS
RSEN2
PMOS
VOUT
Current Limit
R3
Error Amp
ON/OFF
Control
EN2
Thermal
Shutdown
R4
Vref
GND
Discharge
Logic
NMOS
Figure 3. Block Diagram of FP6128
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FP6128
Electrical Characteristics
(VIN=VOUT+1V, VEN1=VEN2=VIN, CIN=1µF, COUT=1µF, TA=25ºC, unless otherwise specified)
Parameter
Output Voltage Accuracy
Current Limit
Symbol
Conditions
Min
-2
Typ
Max
Unit
%
IOUT=1mA
+2
ILIMIT
IQ
RLoad=1Ω
300
mA
µA
Quiescent Current
IOUT=0mA (Single Channel)
25
50
VOUT=1.5V
VOUT=1.8V
910
750
500
270
230
1600
1450
980
510
400
1100
900
IOUT=150mA VOUT=2.5V
VOUT=3.0V
600
330
VOUT=3.3V
270
Dropout Voltage (Note2)
VDROP
mV
VOUT=1.5V
1920
1750
1170
610
VOUT=1.8V
IOUT=300mA VOUT=2.5V
VOUT=3.0V
VOUT=3.3V
480
ꢀꢁꢂꢃT
Line Regulation
IOUT=1mA, VIN=VOUT +1V to 5V
IOUT=1mA to 200mA
0.01
0.20
60
% / V
ꢀꢁꢄꢅꢆꢁꢂꢃT
Load Regulation (Note3)
Ripple Rejection (Note4)
Output Noise Voltage (Note4)
Output Discharge Resistor
Standby Current
VOUT
PSRR
VNO
25
70
mV
dB
VIN=VOUT+1V
fRIPPLE = 10kHz
COUT=1μF, ꢄOUT=0mA
VEN1=VEN2=GND, VOUT =1.8V
VEN1=VEN2=GND, Shutdown
VEN1=VEN2=VIN or GND
Start-up
30
μꢁRMS
Ω
100
ISTBY
IIB
1
µA
EN Input Bias Current
Eꢅ “High” Threshold
100
nA
VIH
1.0
V
Eꢅ “Low” Threshold
VIL
Shutdown
0.4
V
Temperature Coefficient
(Note4)
TC
IOUT=1mA, VIN=5V
100
160
25
ppm/ºC
ºC
TSD
TSD
Thermal Shutdown
Temperature
(Note4)
Hysteresis
ºC
Note 2：The dropout voltage is defined as VIN-VOUT, which is measured when VOUT drops 2% of its normal value with the
specified output current.
Note 3：Load regulation and dropout voltage are measured at a constant junction temperature by using a 40ms low duty
cycle current pulse.
Note 4：Guarantee by design.
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FP6128
Typical Performance Curves
VOUT
VIN=3V 4V
IOUT=0100mA
VOUT
Figure 4. Load Transition Response
(VIN=2.8V, VOUT=1.8V)
Figure 5. Line Transition Response
(VOUT=1.8V, IOUT=10mA)
VOUT1=2.8V
VOUT2=1.2V
VOUT1=2.8V
VOUT2=1.2V
IOUT2=100mA
IOUT1=100mA
Figure 6. Dual Channel Crosstalk Test
Figure 7. Dual Channel Crosstalk Test
VEN1 = VEN2
VOUT1
VOUT2
Figure 8. Enable Test
(VIN=4V, VOUT1=3.3V, VOUT2=2.8V, IOUT=30mA)
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FP6128
Typical Performance Curves (Continued)
50
45
40
35
30
50
VOUT=1.8V
VOUT=2.8V
C =1uF
C =1uF
IN
IN
COUT=1uF
COUT=1uF
45
40
35
30
3.0
3.5
4.0
4.5
5.0
5.5
6.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Input Voltage(V)
Figure 9. Quiescent Current vs. Input Voltage
Figure 10. Quiescent Current vs. Input Voltage
750
750
V =4V
IN
VIN=4V
VOUT=1.8V
VOUT=2.5V
CIN=COUT=1uF
700
650
600
550
500
450
C =COUT=1uF
700
650
600
550
500
450
IN
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
Temperature (0C)
Temperature (0C)
Figure 11. Current Limit vs. Temperature
Figure 12. Current Limit vs. Temperature
3.0
2.2
2.0
1.8
1.6
1.4
V =3.5V
VOUT=2.5V
IN
V =2.8V
IN
VOUT=1.8V
C =1uF
COUT=1uF
IN
2.8
2.6
2.4
2.2
2.0
C =1uF
IN
COUT=1uF
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Temperature(0C)
Temperature(0C)
Figure 13. Output Voltage vs. Temperature
Figure 14. Output Voltage vs. Temperature
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FP6128
Typical Performance Curves (Continued)
55
60
55
50
45
40
35
30
25
20
V =2.8V
C =1uF
COUT=1uF
IN
V =3.5V
IN
IN
50
VOUT=2.5V
CIN=1uF
COUT=1uF
45
40
35
30
25
20
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Temperature(0C)
Temperature (0C)
Figure 15. Quiescent Current vs. Temperature
(VIN=2.8V, VOUT=1.8V)
Figure 16. Quiescent Current vs. Temperature
(VIN=3.5V, VOUT=2.5V)
500
450
400
350
300
250
200
150
100
50
550
VOUT=2.8V
CIN=1uF
V
=3.3V
OUT
500
450
400
350
300
250
200
150
100
50
Tj=850C
Tj=250C
Tj=850C
Tj=250C
C
=1uF
IN
COUT=1uF
C
=1uF
OUT
Tj=-400C
Tj=-400C
0
0
0
30
60
90
120 150 180 210 240 270 300
0
30
60
90
120 150 180 210 240 270 300
Loading Current(mA)
Loading Current(mA)
Figure 17. VOUT=3.3V Dropout vs. Temperature
Figure 18. VOUT=2.8V Dropout vs. Temperature
-80
-100
(VIN=3.3V,VOUT=1.8V, IOUT=100mA, COUT=1uF)
(VIN=3.3V,VOUT=1.8V, IOUT=150mA, COUT=1uF)
(VIN=3.3V, VOUT=1.8V, IOUT=200mA, COUT=1uF)
CIN=None
-80
-60
-40
-20
0
-60
-40
-20
0
VIN=3.3V,VOUT=1.8V
CIN=None, COUT=1uF, No Load
1
10
100
1000
10000
100000
1
10
100
1000
10000
100000 1000000
Frequency(Hz)
Frequency(Hz)
Figure 19. Power Supply Rejection Ratio vs. Frequency
Figure 20. Power Supply Rejection Ratio vs. Frequency
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FP6128
Application Information
Thermal Consideration
The FP6128 include 2 independent output channels.
Current limit and on chip thermal shutdown features
provide protection against any combination of
overload or ambient temperature that could exceed
maximum junction temperature.
The power handling capability of the device will be
limited by maximum 125C operation junction
temperature. The power dissipated by the device
will be estimated by
EN Control
PD = IOUT (VIN-VOUT
)
Force EN pin high to enable the FP6128 and turned
off the device by pulling it low. The Eꢅ pin can’t be
floated and must be tied to the Vin if not used. The
enable control is independent to each channel.
The power dissipation should be lower than the
maximum power dissipation listed in “Absolute
Maximum Ratings” section.
Capacitor Selection
PSRR (Power Supply Rejection Ratio)
The ceramic capacitor is ideal for FP6128
application. The ESR of the output capacitor
The FP6128 has high 70dB PSRR. Ripple rejection
is the ability of the regulator to reduce input voltage
ripple. It is specified with a 10kHz and 1VP-P signal
affects stability.
Larger value of the output
capacitor decreases the peak deviations and
improves transient response for larger current
changes.
applying to input, with 1μF output capacitor. Ripple
rejection, expressed in dB, is the ratio of output ripple
to input ripple.
The capacitor types (ceramic, aluminum, and
tantalum) have different characterizations such as
voltage and temperature coefficients. All ceramic
capacitors are manufactured with a variety of
dielectrics, each with different behavior across
temperature and applications. Common dielectrics
used are X5R, X7R and Y5V. It is recommended
to use 1μF to 10μF X5R or X7R dielectric ceramic
capacitors because X5R or X7R hold their
capacitance over wide voltage and temperature
ranges than other Y5V or Z5U types. The ESR of
output capacitor is very important because it
generates a zero to provide phase lead for loop
stability. The input capacitor can reduced peak
current and noise at power source.
Thermal Shutdown
Thermal shutdown is employed to protect the device
damage from the junction temperature exceed safe
margins due mainly to short circuit or current limit.
Moreover, the device returns normally operation
when the junction temperature down to a constant
temperature. Though temperature protection circuit
is built in to protect IC, the maximum power
dissipation design within Tj(max) is needed. The
thermal protection is independent to each channel.
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FP6128
Outline Information
SOT-23-6 Package (Unit: mm)
DIMENSION IN MILLIMETER
SYMBOLS
UNIT
MIN
0.90
0.00
0.90
0.30
2.80
2.60
MAX
1.45
0.15
1.30
0.50
3.00
3.00
A
A1
A2
B
D
E
E1
e
1.50
0.90
1.80
0.30
1.70
1.00
2.00
0.60
e1
L
Note：Followed From JEDEC MO-178-C.
Carrier Dimensions
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FP6128
Outline Information (Continued)
TDFN-6 1.6mm×1.6mm Package (Unit: mm)
DIMENSION IN MILLIMETER
SYMBOLS
UNIT
MIN
MAX
A
A1
A2
D
0.70
0.80
0.00
0.18
1.55
1.55
0.18
0.18
0.45
0.95
0.55
0.05
0.25
1.65
1.65
0.30
0.30
0.55
1.05
0.65
E
a
b
e
D1
E1
Carrier Dimensions
Life Support Policy
Fitipower’s products are not authorized for use as critical components in life support devices or other medical systems.
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