TEA1205AT is a high-efficiency DC/DC converter with fully integrated converter circuit, high efficiency, synchronization to external high-frequency clock, low quiescent power consumption, etc. It is suitable for mobile phones, PDAs, portable computers, etc.
The TEA1205AT is a fully integrated DC/DC converter circuit designed to supply electronic circuits with supply voltages of 3.3 V or 5.5 V from 2, 3, or 4 NiCd cell batteries or one Li-ion battery. It is intended for use in cameras, cellular phones, PDAs, and portable computers, offering output power up to 3.6 W continuously or 8 W in GSM burst mode.
The device utilizes a digitally controlled Pulse Width and Frequency Modulation (PWFM) concept with integrated low Rds(on) CMOS power switches and synchronous rectification. It features a burst mode operation, a shut-down function, and the ability to synchronize to an external high-frequency clock. The converter is available in an 8-pin SO package (SOT96-1).
| Output voltage (VSEL = LOW) | 5.23 to 5.85 V |
|---|---|
| Output voltage (VSEL = HIGH) | 3.13 to 3.54 V |
| Output power (continuous) | 3.6 W (typ.) |
| Output power (GSM burst mode) | 8 W |
| Synchronization frequency | 13 MHz |
| Quiescent current | 50 to 70 mA |
| NFET current limit | 0.9 to 1.1 A |
| NFET pin-to-pin resistance | 0.08 to 0.20 Ohm |
| PFET pin-to-pin resistance | 0.10 to 0.25 Ohm |
| Operating ambient temperature | -40 to +80 °C |
| Package type | 8-pin SO (SOT96-1) |
The typical continuous output power is up to 3.6 W.
Yes, the switching frequency can be synchronized to an external high-frequency clock of 13 MHz.
It is intended to be used with 2, 3, or 4 NiCd cell batteries or one Li-ion battery.