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TPS7B4254QDDARQ1 Datasheet(PDF) 5 Page - Texas Instruments

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Part # TPS7B4254QDDARQ1
Description  150-mA 40-V Voltage-Tracking LDO With 4-mV Tracking Tolerance
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS7B4254QDDARQ1 Datasheet(HTML) 5 Page - Texas Instruments

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5
TPS7B4254-Q1
www.ti.com
SLVSDI1B – APRIL 2016 – REVISED JUNE 2016
Product Folder Links: TPS7B4254-Q1
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Copyright © 2016, Texas Instruments Incorporated
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.4 Thermal Information
THERMAL METRIC(1)
TPS7B4254-Q1
UNIT
DDA (HSOP)
8 PINS
RθJA
Junction-to-ambient thermal resistance
45.4
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
51.1
°C/W
RθJB
Junction-to-board thermal resistance
27
°C/W
ψJT
Junction-to-top characterization parameter
8.2
°C/W
ψJB
Junction-to-board characterization parameter
26.9
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
6.4
°C/W
(1)
The tracking accuracy is specified when the FB pin is directly connected to the OUT pin which means VADJ = VOUT, external resistor
divider variance is not included.
(2)
Measured when the output voltage, VOUT, has dropped 10 mV from the nominal value.
6.5 Electrical Characteristics
VIN = 13.5 V, VADJ ≥ 2 V, TJ = –40ºC to 150ºC, over operating ambient temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN(UVLO)
IN undervoltage detection
VIN rising
3.65
V
VIN falling
2.8
V
ΔVOUT
Output voltage tracking accuracy(1)
IOUT = 100 μA to 150 mA, VIN = 4 to
40 V
VADJ < VIN – 1 V
2 V < VADJ < 18 V
–4
4
mV
ΔVOUT(ΔIO)
Load regulation, steady-state
IOUT = 0.1 to 150 mA, VADJ= 5 V
4
mV
ΔVOUT(ΔVI)
Line regulation, steady-state
IOUT = 10 mA, VIN = 6 to 40 V, VADJ
= 5 V
4
mV
PSRR
Power-supply ripple rejection
frip = 100 Hz, Vrip = 0.5 VPP, COUT =
10 μF, IOUT = 100 mA
70
dB
VDROPOUT
Dropout voltage (VDROPOUT = VIN
VOUT)
IOUT = 100 mA, VIN = VADJ ≥ 4 V
(2)
160
260
mV
IOUT(LIM)
Output current limitation
VADJ = 5 V, OUT short to GND
151
450
520
mA
IR(IN)
Reverse current at IN
VIN = 0 V, VOUT = 40 V, VADJ = 5 V
–2
0
µA
IR(–IN)
Reverse current at negative IN
VIN = –40 V, VOUT = 0 V, VADJ = 5 V
–10
µA
TSD
Thermal shutdown temperature
175
ºC
TSD_hys
Thermal shutdown hysteresis
15
ºC
IQ
Current consumption
4 V
≤ VIN ≤ 40 V, VADJ = 0 V
2
4
µA
4 V
≤ VIN ≤ 40 V, VADJ = 5 V, IOUT <
100 µA
60
100
µA
4 V
≤ VIN ≤ 40 V, VADJ = 5 V, IOUT <
150 mA
210
260
µA
IQ(DROPOUT
)
Current consumption in dropout
region
VIN = VADJ = 5 V, IOUT = 100 μA
70
140
µA
IADJ
Reference input current
VADJ = VFB = 5 V
5.5
µA
VADJ(LOW)
Reference low signal valid
VOUT = 0 V
0
0.7
V
VADJ(HIGH)
Reference high signal valid
|VOUT – VADJ| < 4 mV
2
18
V
IFB
FB bias current
VADJ = VFB = 5 V
0.5
µA


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