TLV61220_15 Datasheet, PDF (1/24 Pages) Texas Instruments – TLV61220 Low-Input Voltage Step-Up Converter in Thin SOT-23 Package

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TLV61220
SLVSB53A – MAY 2012 – REVISED DECEMBER 2014
TLV61220 Low-Input Voltage Step-Up Converter in Thin SOT-23 Package
1 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
2 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
3 Description
The TLV61220 device 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
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLV61220
SOT (6)
2.90 mm x 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application Schematic
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
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.