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TPS74401 Datasheet(PDF) 7 Page - Texas Instruments

Part # TPS74401
Description  TPS74401 3.0-A, Ultra-LDO with Programmable Soft-Start
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS74401 Datasheet(HTML) 7 Page - Texas Instruments

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TPS74401
www.ti.com
SBVS066Q – DECEMBER 2005 – REVISED APRIL 2015
Electrical Characteristics (continued)
At VEN = 1.1 V, VIN = VOUT + 0.3 V, CIN = CBIAS = 0.1 μF, COUT = 10 μF, IOUT = 50 mA, VBIAS = 5.0 V, and TJ = –40°C to 125°C,
unless otherwise noted. Typical values are at TJ = 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
1 kHz, IOUT = 1.5 A, VIN = 1.8 V, VOUT = 1.5 V
73
dB
Power-supply rejection
(VIN to VOUT)
800 kHz, IOUT = 1.5 A, VIN = 1.8 V, VOUT = 1.5 V
42
dB
PSRR(5)
1 kHz, IOUT = 1.5 A, VIN = 1.8 V, VOUT = 1.5 V
62
dB
Power-supply rejection
(VBIAS to VOUT)
800 kHz, IOUT = 1.5 A, VIN = 1.8 V, VOUT = 1.5 V
50
dB
Vn
Output noise voltage
100 Hz to 100 kHz, IOUT = 1.5 A, CSS = 0.001 μF
16 × VOUT
μVRMS
%VOUT droop during load
VTRAN
IOUT = 100 mA to 3.0 A at 1 A/μs, COUT = 0 μF
4
%VOUT
transient
ISS
Soft-start charging current
VSS = 0.4 V
0.5
0.73
1
μA
VEN(high)
Enable input high level
1.1
5.5
V
VEN(low)
Enable input low level
0
0.4
V
VEN(hys)
Enable pin hysteresis
50
mV
IEN
Enable pin current
VEN = 5 V
0.1
1
μA
VIT
PG trip threshold
VOUT decreasing
86.5
90
93.5
%VOUT
VHYS
PG trip hysteresis
3
%VOUT
VPG(low)
PG output low voltage
IPG = 1 mA (sinking), VOUT < VIT
0.3
V
IPG(lkg)
PG leakage current
VPG = 5.25 V, VOUT > VIT
0.03
1
μA
TJ
Operating junction temperature
–40
125
°C
Shutdown, temperature increasing
155
°C
TSD
Thermal shutdown temperature
Reset, temperature decreasing
140
°C
(5)
See Figure 8 to Figure 11 for PSRR at different conditions.
6.6 Timing Requirements
At VEN = 1.1 V, VIN = VOUT + 0.3 V, CIN = CBIAS = 0.1 μF, COUT = 10 μF, IOUT = 50 mA, VBIAS = 5.0 V, and TJ = –40°C to 125°C,
unless otherwise noted. Typical values are at TJ = 25°C.
MIN
NOM
MAX
UNIT
tSTR
Minimum startup time (IOUT = 1.5 A, CSS = open)
100
μs
VEN(dg)
Enable pin de-glitch time
20
μs
Copyright © 2005–2015, Texas Instruments Incorporated
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