TLV61220
www.ti.com
SLVSB53 –MAY 2012
LOW INPUT VOLTAGE STEP-UP CONVERTER IN THIN SOT-23 PACKAGE
Check for Samples: TLV61220
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FEATURES
APPLICATIONS
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Up to 95% Efficiency at Typical Operating
Conditions
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Battery Powered Applications
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1 to 3 Cell Alkaline, NiCd or NiMH
1 Cell Li-Ion or Li-Primary
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5.5 μA Quiescent Current
Startup Into Load at 0.7 V Input Voltage
Operating Input Voltage from 0.7 V to 5.5 V
Pass-Through Function during Shutdown
Minimum Switching Current 200 mA
Protections:
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Solar or Fuel Cell Powered Applications
Consumer and Portable Medical Products
Personal Care Products
White or Status LEDs
Smartphones
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Output Overvoltage
Overtemperature
Input Undervoltage Lockout
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Adjustable Output Voltage from 1.8 V to 5.5 V
Small 6-pin Thin SOT-23 Package
DESCRIPTION
The TLV61220 provides 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. Possible output currents depend on the
input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous
rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable
version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The
converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The
device is packaged in a 6-pin thin SOT-23 package (DBV).
spacer
TLV61220
L1 4.7:H
SW
VOUT
VOUT
1.8V to 5.5V
R1
R2
VBAT
EN
FB
C2
VIN
10:F
0.7V to VOUT
C1
10:F
GND
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated