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TPS70458PWPR Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce TPS70458PWPR
Description  DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS70458PWPR Fiches technique(HTML) 5 Page - Texas Instruments

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Lineregulation(mV)=(%/V)x V
o
x1000
(V
2.7)
100
-
Imax
x1000
[ V
(V +1) ]
100
-
Imax
o
Lineregulation(mV)=(%/V)x V
o
(3)
If VO < 1.8 V then VImax = 6 V, VImin = 2.7 V:
If VO > 2.5 V then VImax = 6 V, VImin = VO + 1 V:
TPS70445, TPS70448
TPS70451, TPS70458
TPS70402
www.ti.com
SLVS307F – SEPTEMBER 2000 – REVISED APRIL 2010
ELECTRICAL CHARACTERISTICS
Over recommended operating junction temperature range (TJ = –40°C to +125°C), VIN1 or VIN2 = VOUT(nom) + 1 V, IO = 1 mA,
EN = 0 V, COUT1 = 22 mF, and COUT2 = 47 mF (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
2.7 V < VIN < 6 V,
FB connected to VO
1.22
Reference
TJ = +25°C
voltage
2.7 V < VIN < 6 V,
FB connected to VO
1.196
1.244
2.7 V < VIN < 6 V,
TJ = +25°C
1.2
1.2 V Output
(VOUT2)
2.7 V < VIN < 6 V,
1.176
1.224
2.7 V < VIN < 6 V,
TJ = +25°C
1.5
1.5 V Output
Output
(VOUT2)
2.7 V < VIN < 6 V,
1.47
1.53
VO
voltage (1) ,
V
(2)
2.8 V < VIN < 6 V,
TJ = +25°C
1.8
1.8 V Output
(VOUT2)
2.8 V < VIN < 6 V,
1.764
1.836
3.5 V < VIN < 6 V,
TJ = +25°C
2.5
2.5 V Output
(VOUT2)
3.5 V < VIN < 6 V,
2.45
2.55
4.3 V < VIN < 6 V,
TJ = +25°C
3.3
3.3 V Output
(VOUT2)
4.3 V < VIN < 6 V,
3.234
3.366
Quiescent current (GND current) for
See (2)
TJ = +25°C
185
regulator 1 and regulator 2, EN1 = EN2
mA
See (2)
250
= 0 V(1)
VO + 1 V < VIN ≤ 6 V,
TJ = +25°C
(1)
0.01
Output voltage line regulation (
∆VO/VO)
%V
for regulator 1 and regulator 2 (3)
VO + 1 V < VIN ≤ 6 V
(1)
0.1
Load regulation for VOUT 1 and VOUT2
TJ = +25°C
1
mV
Output noise
Regulator 1
79
Vn
voltage
BW = 300 Hz to 50 kHz,
CO = 33 mF, TJ = +25°C
mVRMS
Regulator 2
77
(TPS70451)
Regulator 1
1.75
2.2
Output current limit
VOUT = 0 V
A
Regulator 2
3.8
4.5
Thermal shutdown junction temperature
+150
°C
Regulator 1
EN1 = VIN, EN2 = VIN
TJ = +25°C
1
2
II
Standby
mA
(standby) current
Regulator 2
EN1 = VIN, EN2 = VIN
10
Power-
Regulator 1
f = 1 kHz
TJ = +25°C
(1)
65
supply ripple
PSRR
dB
rejection
Regulator 2
f = 1 kHz
TJ = +25°C
(1)
60
(TPS70451)
RESET Terminal
Minimum input voltage for valid RESET
IRESET = 300 mA,
V(RESET) ≤ 0.8 V
1.0
1.3
V
t (RESET)
RESET pulse duration
80
120
160
ms
Output low voltage
VIN = 3.5 V,
I(RESET) = 1 mA
0.15
0.4
V
Leakage current
V(RESET) = 6 V
1
mA
(1)
Minimum input operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum input voltage = 6 V, minimum output
current = 1 mA.
(2)
IO = 1 mA to 1 A for Regulator 1 and 1 mA to 2 A for Regulator 2.
Copyright © 2000–2010, Texas Instruments Incorporated
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