| AS1322 |
| Low Voltage, 1.2 MHz, Micropower, DC-DC Step-Up Converter - TSOT23-6 |
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Description
The AS1322A and the AS1322B are synchronous, fixed frequency, very high-efficiency DC-DC boost converters capable of supplying 3.3V at 150mA from a single AA-supply. Compact size and minimum external parts requirements make these devices perfect for modern portable devices.
High-speed switching frequency (1.2MHz) and internally compensated PWM current mode design provide highly-reliable DC-DC conversion, especially when driving white LEDs.
The converters are available as the standard products
| Model |
Light Load Switching |
| AS1322A |
Automatic Powersave Operation |
| AS1322B |
Continuous Switching |
The devices contain two internal MOSFET switches: one NMOS switch and one PMOS synchronous rectifier. Anti-ringing control circuitry reduces EMI by damping the inductor in discontinuous mode, and the devices exhibit extremely low quiescent current (< 1μA) in shutdown.
The AS1322 is available in a 6-pin TSOT-23 package.
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