TLV61220 Datasheet, PDF (1/20 Pages) Texas Instruments – LOW INPUT VOLTAGE STEP-UP CONVERTER IN THIN SOT-23 PACKAGE

TLV61220
www.ti.com
SLVSB53 – MAY 2012
LOW INPUT VOLTAGE STEP-UP CONVERTER IN THIN SOT-23 PACKAGE
Check for Samples: TLV61220
FEATURES
1
• Up to 95% Efficiency at Typical Operating
Conditions
• 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:
– Output Overvoltage
– Overtemperature
– Input Undervoltage Lockout
• Adjustable Output Voltage from 1.8 V to 5.5 V
• Small 6-pin Thin SOT-23 Package
APPLICATIONS
• Battery Powered Applications
– 1 to 3 Cell Alkaline, NiCd or NiMH
– 1 Cell Li-Ion or Li-Primary
• Solar or Fuel Cell Powered Applications
• Consumer and Portable Medical Products
• Personal Care Products
• White or Status LEDs
• Smartphones
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).
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TLV61220
L
1
4.7:H
SW VOUT
V
IN
0.7V to V
OUT
C
1
10:F
R
1
VBAT
FB
R
EN
2
GND
C
2
10:F
V
OUT
1.8V to 5.5V
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
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