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TPS2141IPWP Fiches technique(PDF) 9 Page - Texas Instruments

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No de pièce TPS2141IPWP
Description  ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANAGEMENT
Download  25 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS2141IPWP Fiches technique(HTML) 9 Page - Texas Instruments

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TPS2140, TPS2141
TPS2150, TPS2151
SLVS399 – JANUARY 2002
9
www.ti.com
electrical characteristics over recommended operating junction temperature range,
VI(SW_IN)=3.3VforTPS2140/50,VI(SW_IN)=5VforTPS2141/51,VI(LDO_IN)=5V,alloutputsunloaded
(unless otherwise noted) (continued)
adjustable voltage regulator (Vset = 0.9 V to 3.3 V)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO(LDO_OUT)
Output voltage total tolerance
VI(LDO_IN) = Vset + 0.6 V to 5.5 V and
VI(LDO_IN)> 2.7 V, IO(LDO_OUT) = 5 mA to
250 mA
–4%
3%
VO(LDO_OUT)
Line regulation
VI(LDO_IN) = VO(LDO_OUT) + 0.6 V to 5.5 V and
VI(LDO_IN)> 2.7 V, IO(LDO_OUT) = 5 mA
0.03
0.1
%/V
VO(LDO_OUT)
Load regulation
VI(LDO_IN)=VO(LDO_OUT) + 0.6 V to 5.5 V and
VI(LDO_IN)> 2.7 V, IO(LDO_OUT) = 5 mA to
250 mA ( a percentage of Vset)
0.6%
1.3%
VSET
Regulated output voltage set
range
VI(LDO_IN) ≥ VO(LDO_OUT) + 0.6 V
VI(LDO_IN) ≥ 2.7 V, IO(LDO_OUT) = 0 mA to
250 mA
0.9
3.3
V
Vref
ADJ reference voltage
0.8
V
VDROP
Drop-out voltage
VI(LDO_IN) – VSET = –0.1 V,
IO(LDO_OUT) = 250 mA
0.18
0.5
V
PSRR
Power supply rejection ratio,
20 log(Vac/Vo)
Vac = 1 kHz sine wave, 100 mVpp
superimposed on LDO_IN, CL = 4.7 µF,
ESR = 0.25
Ω, IO = 5 mA
50
dB
LDO current limit
Short circuit peak current
LDO_OUT is enabled into a
short to ground
TJ = –40°C
to 110
°C
0.7
2
A
LDO current limit
Overload or short circuit dc
current limit
LDO_OUT is over-loaded or en-
abled into a short to ground
TJ = –40°C
to 110
°C
250
325
500
mA
LDO forward leakage
current ILK_LDO
Current into pin LDO_OUT
VO(LDO_OUT) = 0 V, VI(LDO_IN) = 5.5 V,
VI(EN_LDO) = 0 V
10
A
LDO reverse leakage
current IRLK_LDO
Current into pin LDO_OUT
VO(LDO_OUT) = 5.5 V, VI(LDO_IN) = 0 V,
VI(EN_LDO) = 0 V
10
µA
tON_LDO
Turnon time
From 50% VI(EN_LDO) to 90% VO(LDO_OUT),
RL = VO(LDO_OUT)/0.2, CL = 10 µF (20%)
0.1
0.35
1
tOFF_LDO
Turnoff time
From 50% VI(EN_LDO) to 10% VO(LDO_OUT),
RL = VO(LDO_OUT)/0.2, CL = 10 µF (20%)
0.1
0.4
1
ms
VO(LDO_OUT) ramp-up time (0%
to 90%)
VI(EN_LDO) = 5V, VI(LDO_IN) ramping up from
10% to 90% in 0.1 ms, RL = VO(LDO_OUT)/0.2,
CL = 10 µF (20%)
0.1
0.65
1
ms
LDO pulldown transistor current
VI(PLDN_LDO) = 3.3 V
9
15
mA
LDO pulldown transistor current
VI(LDO_PLDN) = 1 V
5
mA
‡ Not tested in production.
undervoltage lockout, LDO_IN
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
LDO UVLO rising threshold
2.7
V
LDO UVLO falling threshold
2.25
2.45
V
UVLO hysteresis‡
250
mV
‡ Not tested in production.


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