LM3269
Overview
The LM3269 is buck-boost DC-DC converter designed to generate output voltages above or below a given input voltage and is particularly suitable for portable applications powered by a single-cell Li-ion battery. The LM3269 operates at a 2.4-MHz typical switching frequency in full synchronous operation and provides seamless transitions between buck and boost operating regimes.
- 1 Operates From a Single Li-Ion Cell: 2.7 V to 5.5 V
- Adjustable Output Voltage: 0.6 V to 4.2 V
- Automatic PFM or PWM Mode Change
- 750-mA Maximum Load Capability for VBATT ≥ 3 V, VOUT = 3.8 V
- 2.4-MHz (typical) Switching Frequency
- Seamless Buck-Boost Mode Transition
- Fast Output Voltage Transition: 1.4 V to 3 V in 10 µs
- High-Efficiency: 95% typical at VBATT = 3.7 V, VOUT = 3.3 V, at 300 mA
- Input Overcurrent Limit
- Internal Compensation
