MP2117DN集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

DESCRIPTION

The MP2117 is an internally compensated 2.2A

synchronous step-down switcher. The operating

frequency is internally set at 1.25MHz. MP2117

is ideal for powering portable equipment that

runs from a single cell Lithium-Ion (Li+) Battery.

The MP2117 can provide up to 2.2A continuous

load current from a 2.5V to 6V input voltage.

The output voltage can be regulated as low as

0.6V. 100 duty cycle provides low dropout

operation that extends operating time in batteryoperated

systems.

The MP2117 features an integrated high-side

switch and synchronous rectifier for high

efficiency. With peak current mode control and

internal compensation, the MP2117 can be

stabilized with ceramic capacitors and small

inductors. Fault condition protection includes

cycle-by-cycle current limiting and thermal

shutdown.

MP2117 is available in the small 10-pin

3mmx3mm QFN and SOIC-8 packages.

FEATURES

• 2.2A Output Current

• 2.5V to 6V Input Range VIN

• Internal Power MOSFET Switches

• Low Dropout Operation: 100 Duty Cycle

• Up to 90 Efficiency

• Stable with Ceramic Output Capacitors

• 1μA Shutdown Current

• 1.25MHz Switching Frequency

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Output Short Circuit Protection

• Internal Soft-start

• Power On Reset Output

• Available in 10-Pin QFN (3mmx3mm) and

8-pin SOIC Packages

APPLICATIONS

• DVD+/-RW Drives

• LCD TV

• PDAs

• Portable Instruments