Features
Input Supply Range: 2.5V to 5.5V
Output Adjustable from 0.6V to VIN – 0.5V
100% Duty Cycle in Dropout
Integrated NMOS & PMOS Switches
Current Mode Control
1A Maximum Output Current
Fixed 1.4MHz Frequency
High Efficiency: Up To 96%
Built-in Soft-start
Built-in UV & OT Protection
Built-in Short Circuit Protection
RoHS Compliant & Halogen Free
TSOT-5L or UDFN 2x2 6L Packages
Applications
Datacom
Portable Devices
Smart Phone
Description
The LX7186A is 1.4MHz fixed frequency, current-
mode, synchronous PWM buck (step-down) DC-DC
converter, capable of driving a 1A load with high
efficiency, excellent line and load regulation. The
device integrates synchronous P-channel and N-
channel power MOSFET switches with low on-
resistance. They accept an input voltage range from
2.5V to 5.5V and will enter 100% duty cycle at
dropout making them ideal for powering portable
equipment that runs from a single Li-ion battery.
A standard series of inductors are available from
several different manufacturers optimized for use
with the LX7186A. This feature greatly simplifies the
design of switch-mode power supplies.
The converter includes standard safety features
such as over-current, short-circuit and thermal
shutdown protection. This device is available in
both TSOT-5L and UDFN 2x2 6L packages.
