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TPS734XX Datasheet(PDF) 3 Page - Texas Instruments

Part No. TPS734XX
Description  250mA, Low Quiescent Current, Ultra-Low Noise, High PSRR Low-Dropout Linear Regulator
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TPS734XX Datasheet(HTML) 3 Page - Texas Instruments

 
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ELECTRICAL CHARACTERISTICS
TPS734xx
www.ti.com ........................................................................................................................................ SBVS089F – DECEMBER 2007 – REVISED FEBRUARY 2009
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.3V or 2.7V, whichever is greater; IOUT = 1mA,
VEN = VIN, COUT = 2.2µF, CNR = 0.01µF, unless otherwise noted. For TPS73401, VOUT = 3.0V.
Typical values are at TJ = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage range(1)
2.7
6.5
V
VFB
Internal reference (TPS73401)
1.184
1.208
1.232
V
VOUT
Output voltage range (TPS73401)
VFB
6.3
V
VOUT
Output accuracy
Nominal
TJ = +25°C
–1.0
+1.0
%
Over VIN,
VOUT + 0.3V ≤ VIN ≤ 6.5V
VOUT
Output accuracy(1)
–2.0
±1.0
+2.0
%
IOUT, Temp
1mA
≤ IOUT ≤ 250mA
ΔVOUT%/ ΔVIN
Line regulation(1)
VOUT(NOM) + 0.3V ≤ VIN ≤ 6.5V
0.02
%/V
ΔVOUT%/ ΔIOUT
Load regulation
500
µA ≤ I
OUT ≤ 250mA
0.005
%/mA
Dropout voltage(2)
VDO
IOUT = 250mA
125
219
mV
(VIN = VOUT(NOM) – 0.1V)
ICL
Output current limit
VOUT = 0.9 × VOUT(NOM)
300
580
900
mA
IGND
Ground pin current
500
µA ≤ I
OUT ≤ 250mA
45
65
µA
ISHDN
Shutdown current (IGND)
VEN ≤ 0.4V
0.15
1.0
µA
IFB
Feedback pin current (TPS73401)
–0.5
0.5
µA
f = 100Hz
60
dB
Power-supply rejection ratio
f = 1kHz
56
dB
PSRR
VIN = 3.85V, VOUT = 2.85V,
f = 10kHz
41
dB
CNR = 0.01µF, IOUT = 100mA
f = 100kHz
28
dB
CNR = 0.01µF
11 x VOUT
µV
RMS
Output noise voltage
VN
BW = 10Hz to 100kHz, VOUT = 2.8V
CNR = none
95 x VOUT
µV
RMS
CNR = none
45
µs
Startup time,
CNR = 0.001µF
45
µs
VOUT = 0 ~ 90%,
TSTR
VOUT = 2.85V,
CNR = 0.01µF
50
µs
RL = 14Ω, COUT = 2.2µF
CNR = 0.047µF
50
µs
VEN(HI)
Enable high (enabled)
1.2
VIN
V
VEN(LO)
Enable low (shutdown)
0
0.4
V
IEN(HI)
Enable pin current, enabled
VEN = VIN = 6.5V
0.03
1.0
µA
Shutdown, temperature increasing
165
°C
TSD
Thermal shutdown temperature
Reset, temperature decreasing
145
°C
TJ
Operating junction temperature
–40
+125
°C
Undervoltage lock-out
VIN rising
1.90
2.20
2.65
V
UVLO
Hysteresis
VIN falling
70
mV
(1)
Minimum VIN = VOUT + VDO or 2.7V, whichever is greater.
(2)
VDO is not measured for devices with VOUT(NOM) < 2.8V because minimum VIN = 2.7V.
Copyright © 2007–2009, Texas Instruments Incorporated
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