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TPS54202H Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS54202H
Description  4.5-V to 28-V Input, 2-A Output, SWIFT Synchronous Step Down Voltage Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54202H Datasheet(HTML) 1 Page - Texas Instruments

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Output Current (A)
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
D100
VIN = 12 V, VOUT = 5 V
VIN = 12 V, VOUT = 3.3 V
VIN = 24 V, VOUT = 5 V
VIN = 24 V, VOUT = 3.3 V
VIN
EN
GND
BOOT
FB
SW
VIN
VOUT
EN
Cin
Lo
Rfb1
Rfb2
Co
Cboot
3
1
5
2
4
6
TPS54202H
Copyright © 2016, Texas Instruments Incorporated
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TPS54202H
SLVSDG7 – APRIL 2016
TPS54202H 4.5-V to 28-V Input, 2-A Output,
SWIFT™ Synchronous Step Down Voltage Converter
1
1 Features
1
4.5-V to 28-V Wide Input voltage Range
Integrated 148-m
Ω and 78-mΩ MOSFETs for 2-A,
Continuous Output Current
Low 2-
μA Shutdown, 45-μA Quiescent Current
Internal 5-mS Soft-Start
Fixed 500-kHz Switching Frequency
Advanced Eco-mode™ Pulse Skip
Peak Current Mode Control
Internal Loop compensation
Overcurrent Protection for Both MOSFETs with
Hiccup Mode Protection
Over Voltage Protection
Thermal Shutdown
SOT-23 (6) Package
2 Applications
12-V, 24-V Distributed Power-Bus Supply
Industry Application
White Goods
Consumer Application
Audio
STB, DTV
Printer
3 Description
The TPS54202H is a 4.5-V to 28-V input voltage
range, 2-A synchronous buck converter. The device
includes two integrated switching FETs, internal loop
compensation and 5-ms internal soft start to reduce
component count.
By integrating the MOSFETs and employing the SOT-
23 package, the TPS54202H achieves the high
power density and offers a small footprint on the
PCB.
Advanced Eco-mode implementation maximizes the
light load efficiency and reduces the power loss.
Cycle-by-cycle
current
limit
in
both
high-side
MOSFET protects the converter in an overload
condition and is enhanced by a low-side MOSFET
freewheeling current limit which prevents current
runaway. Hiccup mode protection is triggered if the
overcurrent condition has persisted for longer than
the present time.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS54202H
SOT-23(6)
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Efficiency vs Output Current


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