Datasheet Texas Instruments LM3212 — 数据表

LM3212
www.ti.com SNOSB37C – DECEMBER 2008 – REVISED APRIL 2013 LM3212 Step-Down DC-DC Converter with Analog Bypass Mode for RF Power Amplifiers
Check for Samples: LM3212 FEATURES DESCRIPTION The LM3212 is a DC-DC converter optimized for
powering GSM RF power amplifiers (PAs) from a
single Lithium-Ion cell; however, it may also be used
in other applications. The LM3212 steps down an
input voltage from 2.7V to 5.5V to a dynamically
adjustable output voltage of 0.5V to 3.4V. The output
voltage is set through a VCON analog input that
adjusts the output voltage to ensure efficient
operation at all power levels of the RF PA. 1 2 1.6 MHz (typ.) PWM Switching Frequency
ACB Reduces Inductor Requirements and Size
Operates From a Single Li-Ion Cell (2.7V to
5.5V)
Dynamically Adjustable Output Voltage (0.5V
to 3.4V)
2.5A Maximum Load Current
Analog Bypass Function With Low Bypass
Resistance (33 mΩ typ.)
High Efficiency to 95% with Internal
Synchronous Rectification
16-bump DSBGA Package
Current Overload Protection …