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TPPM0302 数据表(PDF) 4 Page - Texas Instruments

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部件名 TPPM0302
功能描述  400-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT AND POK
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TPPM0302 数据表(HTML) 4 Page - Texas Instruments

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TPPM0302
400-mA LOW-DROPOUT REGULATOR
WITH AUXILIARY POWER MANAGEMENT AND POK
SLVS316 – NOVEMBER 2000
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, TA = 0°C to
70
°C, CL = 4.7 µF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V(5VCC)/
V(5VAUX)
5-V inputs
4.5
5
5.5
V
I(Q)
Quiescent supply current
From 5VCC or 5VAUX terminals, IL = 0 mA to 400 mA
2.5
5
mA
I(Q)
Quiescent supply current
From 3.3VAUX terminal, IL = 0 A
250
500
µA
IL
Output load current
0.4
A
I(LIMIT)
Output current limit
3.3VOUT = 0 V
1
1.5
A
T(TSD)†
Thermal shutdown
3 3VOUT output shorted to 0 V
150
180
°C
Thys†
Thermal hysteresis
3.3VOUT output shorted to 0 V
15
°C
V(3.3VOUT)
3.3-V output
IL = 400 mA
3.135
3.3
3.465
V
CL
Load capacitance
Minimal ESR to insure stability of regulated output
4.7
µF
Ilkg(REV)
Reverse leakage output
current
Tested for input that is grounded.
3.3VAUX, 5VAUX, or 5VCC = GND, 3.3VOUT = 3.3 V
50
µA
† Design targets only. Not tested in production.
5-V detect
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V(TO_LO)
Threshold voltage, low
5VAUX or 5VCC
3.85
4.05
4.25
V
V(TO_HI)
Threshold voltage, high
5VAUX or 5VCC
4.1
4.3
4.5
V
auxiliary switch
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
R(SWITCH)
Auxiliary switch resistance
5VAUX = 5VCC = 0 V, 3.3VAUX = 3.3 V, IL = 150 mA
0.4
∆VO(∆VI)
Line regulation voltage
5VAUX or 5VCC = 4.5 V to 5.5 V
2
mV
∆VO(∆IO)
Load regulation voltage
20 mA < IL < 400 mA
40
mV
VI – VO
Dropout voltage
IL < 400 mA
1
V
Power OK (POK)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V(TO_POK)
POK threshold voltage
2.67
2.8
2.93
V
VOL
Output low voltage
3.3VOUT = 0
→ 3.3 V and starts POK delay timer
0.4
V
IOH
Output high current
200
µA
VOH
Output high voltage
5K pullup to 3.3VOUT
3.3
V
timing characteristics, TA = 0°C to 70°C, CL = 4.7 µF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
td
Power OK delay
5VCC or 5VAUX or 3.3VAUX > VTO and POK ↑
5
10
ms
† Design targets only. Not tested in production.
thermal characteristics
PARAMETER
MIN
TYP
MAX
UNIT
R
θJC Thermal impedance, junction-to-case
4.7
°C/W
R
θJA
Thermal impedance, junction-to-ambient
59
°C/W
‡ Based on Texas Instrument recommended board for PowerPAD package.


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