LM3686TLE-AAEF/NOPB Description

The LM3686TLE-AAEF/NOPB is a step-down DC-DC converter with a very low-dropout linear regulator and a low-noise linear regulator optimized for powering ultra-low voltage circuits. It provides three outputs with a combined load current of up to 900 mA over an input voltage range from 2.7 V to 5.5 V. The LM3686TLE-AAEF/NOPB offers superior features and performance for many applications. Automatic intelligent switching between PWM low-noise and PFM low-current modes offers improved system control. During full-power operation, a fixed-frequency 3 MHz (typical), PWM mode drives loads from approximately 70 mA to 600 mA maximum. Hysteretic PFM mode extends the battery life through the reduction of the quiescent current to 28 μA (typical) at light load and system standby Internal synchronous rectification provides high efficiency.

LM3686TLE-AAEF/NOPB Features

VOUT_DCDC = 1.2 V to 2.5 V

600-mA Maximum ILOAD

3-MHz Typical PWM Fixed Switching Frequency

Automatic PFM/PWM Mode Switching

Internal Synchronous Rectification

Internal Soft Start

Linear Regulator: LDO

LM3686TLE-AAEF/NOPB Applications

Mobile TVs, Hand-Held Radios

Personal Digital Assistants, Palm-Top PCs

Portable Instruments and Personal Clients

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