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TPS61200 Datasheet(PDF) 11 Page - Texas Instruments

Part # TPS61200
Description  TPS6120x Low Input Voltage Synchronous Boost Converter With 1.3-A Switches
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS61200 Datasheet(HTML) 11 Page - Texas Instruments

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VOUT
VIN
Device
Control
GND
Gate
Control
V
FB
Thermal
Shutdown
Oscillator
UVLO
FB
PGND
PGND
PGND
L
Modulator
PS
Current
Sensor
VAUX
VCC
Control
VOUT
VCC
EN
TPS61200, TPS61201, TPS61202
www.ti.com
SLVS577E – MARCH 2007 – REVISED DECEMBER 2014
10 Detailed Description
10.1 Overview
The TPS6120x is a low input voltage synchronous boost converter family. The devices support 0.3-V to 5.5-V
input voltage range, so can provide power supply solutions for products powered by either a single-cell, two-cell,
or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. It is also used in fuel cell or solar cell
powered devices where the capability of handling low input voltages is essential. The devices provide output
currents of up to 600 mA at a 5-V output, while using a single-cell Li-Ion or Li-Polymer battery and discharges it
down to 2.6 V. The boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller
using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters the
Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be
disabled, forcing the converter to operate at a fixed switching frequency. The average input current is limited to a
maximum value of 1500 mA. The output voltage is programmed by an external resistor divider, or is fixed
internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is
completely disconnected from the battery.
10.2 Functional Block Diagram
Copyright © 2007–2014, Texas Instruments Incorporated
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Product Folder Links: TPS61200 TPS61201 TPS61202


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