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TPS51312 Datasheet(PDF) 4 Page - Texas Instruments

Part # TPS51312
Description  3.1-V to 5.5-V Input, 3-A Output, Synchronous, Step-Down Regulator with Integrated FETs
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS51312 Datasheet(HTML) 4 Page - Texas Instruments

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background image
SW
OC
ZC
XCON
VIN
Delay
PGOOD
Control Logic
+
+
VREF + 30%
+
+
FB
tON
One -
Shot
UV
OV
VREF – 50%
+
UVP
OVP
TPS51312
UDG-12124
·
On/Off Time
·
Minimum On /Off
·
SKIP Mode
·
OCL/OVP/UVP
·
Discharge
VBG
PWM
+
Σ
+
+
VSW
IGAIN
ENOK
+
EN
1.5 V/ 0.8 V
+
VCC
2.95 V/ 2.7 V
+
2.95 V/2.7 V
VCCOK
VINOK
VCC UVLO
VIN UVLO
VBG
VREF
Discharge
TPS51312
SLUSB57 – SEPTEMBER 2012
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
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
SW PULL-DOWN RESISTANCE
RSWPD
SW pull-down resistance
EN = Lo
260
Ω
THERMAL SHUTDOWN
Shutdown temperature
145
TSDN
Thermal shutdown threshold(2)
°C
Hysteresis
20
(2)
Specified by design. Not production tested.
DEVICE INFORMATION
FUNCTIONAL BLOCK DIAGRAM
4
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Copyright © 2012, Texas Instruments Incorporated
Product Folder Links :TPS51312


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