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TPPM0303D Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPPM0303D
Description  250-mA LOW-DROPOUT REGULATOR WITH AUXILIARY POWER MANAGEMENT
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPPM0303D Datasheet(HTML) 4 Page - Texas Instruments

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TPPM0303
250-mA LOW-DROPOUT REGULATOR
WITH AUXILIARY POWER MANAGEMENT
SLVS364 – FEBRUARY 2001
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 to
250 mA
2.5
5
mA
(Q)
y
From 3.3VAUX terminal, IL = 0 A
250
500
µA
IL
Output load current
0.25
A
I(LIMIT)
Output current limit
3.3VOUT = 0 V
2
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 = 250 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 < 250 mA
40
mV
VI – VO
Dropout voltage
IL < 250 mA
1
V
thermal characteristics
PARAMETER
MIN
TYP
MAX
UNIT
R
θJC Thermal impedance, junction-to-case
39
°C/W
R
θJA
Thermal impedance junction-to-ambient
Low-K (see Note 4)
176
°C/W
R
θJA
Thermal im edance, junction-to-ambient
High-K (see Note 4)
98
°C/W
NOTE 4: See JEDEC PCB specifications for low-K and high-K.


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