TPS61200_15 Datasheet, PDF (1/33 Pages) Texas Instruments – TPS6120x Low Input Voltage Synchronous Boost Converter With 1.3-A Switches

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TPS61200, TPS61201, TPS61202
SLVS577E – MARCH 2007 – REVISED DECEMBER 2014
TPS6120x Low Input Voltage Synchronous Boost Converter
With 1.3-A Switches
1 Features
•1 More than 90% Efficiency at
– 300 mA Output Current at 3.3 V
(VIN ≥ 2.4 V)
– 600 mA Output Current at 5 V (VIN ≥ 3 V)
• Automatic Transition between Boost Mode and
Down Conversion Mode
• Device Quiescent Current Less than 55 μA
• Startup into Full Load at 0.5 V Input Voltage
• Operating Input Voltage Range from
0.3 V to 5.5 V
• Programmable Undervoltage Lockout Threshold
• Output Short Circuit Protection Under all
Operating Conditions
• Fixed and Adjustable Output Voltage Options from
1.8 V to 5.5 V
• Power Save Mode for Improved Efficiency at Low
Output Power
• Forced Fixed Frequency Operation Possible
• Load Disconnect During Shutdown
• Overtemperature Protection
• Small 3 mm x 3 mm VSON-10 Package
2 Applications
• All Single-Cell, Two-Cell and Three-Cell Alkaline,
NiCd or NiMH or Single-Cell Li Battery Powered
Products
• Fuel Cell And Solar Cell Powered Products
• Portable Audio Players
• PDAs
• Cellular Phones
• Personal Medical Products
• White LED Driver
3 Description
The TPS6120x devices provide a power supply
solution 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. Possible
output currents depend on the input to output voltage
ratio. 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. The device is
packaged in a 10-pin VSON package measuring 3
mm x 3 mm.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6120x
VSON (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application
VIN
C₁
0.3 V to 5.5 V
10 mF
L₁
VIN
EN
PS
UVLO
2.2 mH
L
VOUT
VAUX
FB
C₃
0.1 mF
GND
PGND
TPS61200
C₂
R1
10 mF
R2
VOUT
1.8 V to 5.5 V
1
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.