1 Features
• Operating input voltage range: 0.9 V to 5.5 V
• Output voltage range: 1.8 V to 5.5 V
• 6.5-μA Quiescent current into VOUT pin
• ±3% Output voltage accuracy over temperature
• Minimum switch peak-current limit:
– 0.42 A for TPS613223A
– 0.5 A for TPS61322
– 0.75 A for TPS613221A and TPS613226A
– 1.10 A for TPS613222A
• Higher than 90% efficiency at 10-mA load from
1.5-V to 2.2-V conversion
• Thermal shutdown protection
• 2.9-mm × 1.3-mm 3-pin SOT package and 2.9-mm
× 1.6-mm 5-pin SOT package
• Create a custom design using the TPS61322 with
the WEBENCH® Power Designer

2 Applications
• 1-cell to 3-cell Alkaline or NiMH battery-powered
applications
• Gaming control
• Tablet
• Portable electronics
• Medical equipment

3 Description
The TPS61322 is a synchronous boost converter
with only 6.5-μA quiescent current. The TPS61322
provides a power-supply solution for products
powered by alkaline battery, NiMH rechargeable
battery, or one-cell Li-ion battery. The boost
converter is based on a hysteretic control topology
using synchronous rectification to obtain maximum
efficiency at minimal quiescent current. The
TPS61322 also allows the use of small external
inductor and capacitors. Higher than 90% efficiency
is achieved at 10-mA load from 1.5-V input to 2.2-V
output conversion.
The TPS61322 can also support high output current
applications with an external schottky diode. The
TPS613222A provides higher than 500-mA output
current capability at 3-V input voltage to 5-V output
voltage conversion with an external Schottky diode in
parallel with the internal rectifier FET.
The output voltage is set internally to a fixed output
voltage from 1.8 V to 5.5 V in increments of 0.1
V. Thus, it only needs two external components to
get the desired output voltage. The TPS61322 also
implements thermal shutdown protection function.
The TPS61322 is available in a 2.9-mm × 1.3-mm
3-pin SOT package or a 2.9-mm × 1.6-mm 5-pin SOT
package.