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TPS51313 Datasheet(PDF) 3 Page - Texas Instruments

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Part # TPS51313
Description  5-V Input or 3.3-V Input, 3-A, Fully Integrated Converter
PDF  19 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS51313 Datasheet(HTML) 3 Page - Texas Instruments

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TPS51313
www.ti.com
SLUSB31 – SEPTEMBER 2012
ELECTRICAL CHARACTERISTICS
Over operating free-air temperature range, VIN = 5 V, VCC = 5 V, VEN = 3.3 V (unless otherwise noted).
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE
VIN
Supply voltage
3.1
5.5
V
VCC
Supply voltage
3.1
5.5
V
SUPPLY CURRENT
IIN
Input voltage supply current
EN = High
100
μA
ISD
Input voltage shutdown current
EN = Low
12
μA
IVCC(in)
VCC supply current
EN = High
700
μA
IVCC(sd)
VCC shutdown current
EN = Low, TA = 25°C
20
μA
VFB REFERNCE VOLTAGE
VFBREF
Reference voltage
0.6
V
VFBREFTOL
Reference voltage tolerance
TA = 25°C
–1%
1%
IFB
Feedback pin leakage current
–100
100
nA
SMPS FREQUENCY
EVM close loop measurement. VIN = 5 V,
fSW
Switching frequency
1
MHz
VOUT = 1.05 V, IOUT = 3 A
tOFF(min)
Minimum off-time
110
190
270
ns
SW node high, VIN = 5 V
9
tDEAD
Deadtime(1)
ns
SW node low, VIN = 5 V
10
LOGIC THRESHOLD
VLL
EN low-level voltage
0.8
V
VLH
EN high-level voltage
1.5
V
ILLK
EN input leakage current
VIN = VCC = 3.3 V
–3
1
3
μA
SOFT START
tSS
Soft-start time(1)
VFB rising from 0 V to 0.6 V
300
µs
PGOOD COMPARATOR
PGOOD out to higher w/r/t VFB
130%
VPGTH
PGOOD threshold
PGOOD out to lower w/r/t VFB
50%
tPGDLY
PGOOD high delay time
Delay for PGOOD in, after EN = Hi
1.3
ms
IPGLK
PGOOD leakage current
–1
0
1
μA
CURRENT DETECTION
Valley current limit, VIN = VCC = 3.3 V,
IOCL
Current limit threshold
4.8
A
TA = 25°C
PROTECTIONS
Wake-up
2.85
2.95
3.05
VIN_UVLO
VIN UVLO threshold voltage
Shutdown
2.6
2.7
2.8
V
Wake-up
2.85
2.95
3.05
VCC_UVLO
VCC UVLO threshold voltage
Shutdown
2.6
2.7
2.8
VOVP
OVP threshold voltage
OVP detect voltage, overdrive = 100 mV
130%
tOVP
OVP delay time
Overdrive = 100 mV
1.9
µs
VUVP
UVP threshold voltage
UVP detect voltage, overdrive = 100 mV
50%
tUVPDLY
UVP delay time
Overdrive = 100 mV
2.4
µs
SW PULL DOWN
RSWPD
Switch node pull down resistance
EN = Lo
260
Ω
THERMAL SHUTDOWN
Shutdown temperature
145
TSDN
Thermal shutdown threshold(1)
°C
Hysteresis
20
(1)
Specified by design. Not production tested.
Copyright © 2012, Texas Instruments Incorporated
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