Datasheet Texas Instruments LM3269TLE/NOPB — 数据表

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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 3 Description 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. 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 Вµs
High-Efficiency: 95% typical at VBATT = 3.7 V,
VOUT = 3.3 V, at 300 mA …