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TPS732XX Datasheet(PDF) 3 Page - Texas Instruments

No. de Pieza. TPS732XX
Descripción  Cap-Free, NMOS, 250mA Low Dropout Regulator with Reverse Current Protection
Descarga  23 Pages
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS732XX Datasheet(HTML) 3 Page - Texas Instruments

 
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ELECTRICAL CHARACTERISTICS
TPS732xx
SBVS037I – AUGUST 2003 – REVISED MAY 2006
Over operating temperature range (T
J = –40°C to +125°C), VIN = VOUT(nom) + 0.5V
(1), I
OUT = 10mA, VEN = 1.7V, and
C
OUT = 0.1µF, unless otherwise noted. Typical values are at TJ = 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage range(1)
1.7
5.5
V
VFB
Internal reference (TPS73201)
TJ = +25°C
1.198
1.20
1.210
V
Output voltage range (TPS73201)(2)
VFB
5.5 – VDO
V
Nominal
TJ = +25°C
–0.5
+0.5
VOUT
Accuracy(1)
%
VOUT + 0.5V ≤ VIN ≤ 5.5V;
VIN, IOUT, and T
–1.0
±0.5
+1.0
10 mA
≤ I
OUT ≤ 250mA
∆V
OUT%/∆VIN
Line regulation(1)
VOUT(nom) + 0.5V ≤ VIN ≤ 5.5V
0.01
%/V
1mA
≤ I
OUT ≤ 250mA
0.002
∆V
OUT%/∆IOUT
Load regulation
%/mA
10mA
≤ I
OUT ≤ 250mA
0.0005
Dropout voltage(3)
VDO
IOUT = 250mA
40
150
mV
(VIN = VOUT (nom) – 0.1V)
ZO(DO)
Output impedance in dropout
1.7 V
≤ V
IN ≤ VOUT + VDO
0.25
ICL
Output current limit
VOUT = 0.9 × VOUT(nom)
250
425
600
mA
ISC
Short-circuit current
VOUT = 0V
300
mA
VEN ≤ 0.5V, 0V ≤ VIN ≤ VOUT
IREV
Reverse leakage current(4) (–IIN)
0.1
10
µA
–40
°C ≤ T
J ≤ +100°C
IOUT = 10mA (IQ)
400
550
IGND
Ground pin current
µA
IOUT = 250mA
650
950
ISHDN
Shutdown current (IGND)
VEN ≤ 0.5V, VOUT ≤ VIN ≤ 5.5
0.02
1
µA
IFB
FB pin current (TPS73201)
0.1
0.3
µA
f = 100Hz, IOUT = 250 mA
58
Power-supply rejection ratio
PSRR
dB
(ripple rejection)
f = 10kHz, IOUT = 250 mA
37
COUT = 10µF, No CNR
27
× V
OUT
Output noise voltage
VN
µV
RMS
BW = 10Hz – 100kHz
COUT = 10µF, CNR = 0.01µF
8.5
× V
OUT
VOUT = 3V, RL = 30Ω
tSTR
Startup time
600
µs
COUT = 1 µF, CNR = 0.01 µF
VEN(HI)
Enable high (enabled)
1.7
VIN
V
VEN(LO)
Enable low (shutdown)
0
0.5
V
IEN(HI)
Enable pin current (enabled)
VEN = 5.5V
0.02
0.1
µA
Shutdown
Temp increasing
+160
TSD
Thermal shutdown temperature
°C
Reset
Temp decreasing
+140
TJ
Operating junction temperature
–40
+125
°C
(1)
Minimum VIN = VOUT + VDO or 1.7V, whichever is greater.
(2)
TPS73201 is tested at VOUT = 2.5V.
(3)
VDO is not measured for the TPS73214, TPS73215 or TPS73216 since minimum VIN = 1.7V.
(4)
Fixed-voltage versions only; refer to Applications section for more information.
3
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