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| LP3925 Datasheet, PDF (29/51 Pages) Texas Instruments – High Performance Power Management Unit for Handset Applications | |||
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Symbol
ÎVOUT
eN
PSRR
tSTART-UP
VLOADTRANS
VLINETRANS
VTRANSIENT
COUT
Parameter
Conditions
LDO#
Line Regulation
VOUT +0.5V ⤠VIN ⤠4.5V
IOUT = IMAX
1..10
4, 8
Load Regulation
1mA ⤠IOUT ⤠IMAX
1..3,
5..7, 9,
10
Output Noise Voltage
Power Supply Ripple Rejection
Ratio
Start-Up Time from Shut-down
Load transient overshoot
Line transient, peak-to-peak
Start-Up Transient Overshoot
10 Hz ⤠f ⤠100 kHz
COUT = 1µF (Note 7)
f = 10 kHz, COUT = 1µF
IOUT = 20 mA (Note 7)
IOUT= 0
VOUT ⥠0 - 90%
VOUT ⥠0 - 97% (Note 7)
IOUT = 0 ⥠200 mA
IOUT = 0 ⥠200 mA (Note 7)
VIN = 3.6 ⥠4.2 ⥠3.6;
tr = tf = 30 µs
IOUT = 50 mA (Note 7)
COUT = 1µF, IOUT = IMAX
(Note 7)
1...10
1..10
1...10
1...10
1...10
1...10
External output capacitance for
stability
1...10
Typ.
3
0.5
3.5
15
70
45
50
-30
35
90
1
1
Limits
Min Max
Units
mV
mV
µVRMS
dB
µs
mV
µV
30
mV
0.6
20
µF
WILO-TYPE LDO ELECTRICAL CHARACTERISTICS
Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire
junction temperature range for operation, TJ = â40°C to +125°C. Unless otherwise specified, the following applies for VBATT = 3.6V.
(Note 6, Note 10)
Symbol
Parameter
Conditions
LDO# Typ.
Limits
Min Max
Units
VOUT
Output Voltage Accuracy
IOUT = 1mA, VOUT = 2.0V 11...13
-2
2
%
-3
3
ISC
Output Current Limit
VOUT = 0V
11...13 600
300
mA
IMAX
Output Current Rating
300
mA
VDO
Dropout Voltage
VOUT = 3V; IOUT = IMAX
(Note 8)
11...13 150
250
mV
Line Regulation
VOUT +0.5V ⤠VIN ⤠4.5V 11...13
2.5
ÎVOUT
IOUT = IMAX
mV
Load Regulation
1mA ⤠IOUT ⤠IMAX
11...13
3
IQnormal
Quiescent current in normal
mode
(Note 7)
17
11...13
µA
IQsleep
Quiescent current in sleep
mode
(Note 7)
4
eN
PSRR
tSTARTUP
10 Hz ⤠f ⤠100 kHz
Output Noise Voltage
COUT = 1µF, IOUT = 20 mA 11...13
85
VOUT = 1.8V (Note 7)
Power Supply Ripple Rejection f = 10 kHz, COUT = 1µF
Ratio
IOUT = 20 mA (Note 7)
11...13
60
Startup Time from Shutdown COUT = 1µF, IOUT = IMAX
11...13
35
µVRMS
dB
µs
29
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