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| LP3925 Datasheet, PDF (30/51 Pages) Texas Instruments – High Performance Power Management Unit for Handset Applications | |||
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Symbol
VTRANSIENT
COUT
Parameter
Conditions
Startup Transient Overshoot COUT = 1µF, IOUT = IMAX
External output capacitance for
stability
LDO#
11...13
11...13
Typ.
1.0
Limits
Min Max
30
Units
mV
0.5
20
µF
MICRO-PWR 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)
Symbol
Parameter
Conditions
Typ.
Limits
Min
Max
Units
VOUT
Output Voltage Accuracy IOUT = 1mA, VOUT = 1.80V
1.8
V
IMAX
Maximum Output Current VOUT = 1.8V
30
mA
ISC
Output Current Limit
VOUT = 0V
220
mA
Line Regulation
VOUT +0.5V ⤠VIN ⤠4.5V
2
ÎVOUT
IOUT = IMAX
mV
Load Regulation
1mA ⤠IOUT ⤠IMAX
1
PSRR
Power Supply Ripple
Rejection Ratio
f = 10 kHz, COUT = 1µF
IOUT = 20 mA (Note 7)
45
dB
tSTARTUP
Startup Time from
Shutdown
COUT = 1µF, IOUT = IMAX (Note 7)
200
µs
VTRANSIENT
Startup Transient
Overshoot
COUT = 1µF, IOUT = IMAX (Note 7)
75
mV
COUT
External output capacitance
for stability
1.0
0.6
20
µF
USB 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 VVIN_CHG =
5.0V. (Note 6)
Symbol
Parameter
Conditions
Typ.
Limits
Min
Max
Units
VOUT
IMAX
ISC
VDO
Output Voltage Accuracy IOUT = 1mA, VOUT = 3.30V
3.15
3.45
V
Maximum Output Current VOUT = 3.30V
50
mA
Output Current Limit
VOUT = 0V
300
mA
Dropout Voltage
IOUT = IMAX
330
mV
USB LDO VOUT = 4.85V (Note 8)
Line Regulation
VOUT +0.5V ⤠VIN_CHG ⤠6.5V
5
ÎVOUT
Load Regulation
IOUT = 10 mA, VOUT = 4.85V
1mA ⤠IOUT ⤠IMAX
6
mV
VOUT = 3.3V
PSRR
Power Supply Ripple
f = 10 kHz, COUT = 1µF
45
dB
Rejection Ratio
IOUT = 20 mA (Note 7)
tSTARTUP
Startup Time from
Shutdown
COUT = 1µF, IOUT = IMAX (Note 7)
15
µs
VTRANSIENT
Startup Transient
Overshoot
COUT = 1µF, IOUT = IMAX
250
mV
COUT
External output capacitance
for stability
1.0
0.6
20
µF
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