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TPS56428 Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPS56428
Description  4.5V to 18 V Input, 4-A Synchronous Step-Down Converter with Advanced Eco-mode?
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS56428 Datasheet(HTML) 4 Page - Texas Instruments

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POWER PAD
TPS56428
DDA
HSOP8
SW
VBST
PG
VFB
GND
8
2
3
4
1
EN
VREG5
7
6
5
VIN
TPS56428
SLVSBV4A – APRIL 2013 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
THERMAL SHUTDOWN
Shutdown temperature(2)
165
TSDN
Thermal shutdown threshold
°C
Hysteresis(2)
35
ON-TIME TIMER CONTROL
tON
On time
VIN = 12 V, VO = 1.05 V
150
ns
tOFF(MIN)
Minimum off time
TA = 25°C, VFB = 0.5 V
260
310
ns
SOFT START
tss
Soft-start time
Internal soft-start time
0.7
1.0
1.3
ms
POWER GOOD
VFB rising(good)
85%
90%
95%
VTHPG
PG threshold
VFB falling(Fault)
85%
IPG
IPG PG sink current
PG=0.5V
2
4
mA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP
Output OVP threshold
OVP Detect (L>H)
125%
VUVP
Output UVP threshold
UVP detect (H>L)
65%
tUVPDEL
Output UVP delay
To Hiccup state
7
µs
tUVPEN
Output UVP Enable delay
Relative to soft start time
x1.7
UVLO
Wake up VREG5 voltage
3.45
3.75
4.05
UVLO
UVLO threshold
V
Hysteresis VREG5 voltage
0.13
0.32
0.48
(2)
Not production tested.
DEVICE INFORMATION
DDA PACKAGE
(TOP VIEW)
4
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Copyright © 2013, Texas Instruments Incorporated
Product Folder Links :TPS56428


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