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SNVS793D
- NOVEMBER 2011
- REVISED MAY 2015
LM3269 Seamless-Transition Buck-Boost Converter for 3G and 4G RF Power Amplifiers
1 Features
- 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 pensation
2...