General Description

The MIC2169B is a high-efficiency, simple to use 500kHz PWM synchronous buck control IC housed in small MSOP-10 and MSOP-10 ePad packages. The MIC2169B allows compact DC/DC solutions with a minimal external component count and cost. The device features high output driver capability to drive loads up to 30A.

Features

• 3V to 14.5V input voltage range

• Adjustable output voltage down to 0.8V

• 500kHz PWM operation

• Up to 95 efficiency

• Output Pre-biased Protection

• Build-in 2.2Ω drivers to drive two n-channel MOSFETs

• Adaptive gate drive increases efficiency

• Simple, externally-compensated voltage-mode PWM control

• Short minimum ON time of 30ns allowing very-low duty cycle

• Fast transient response

• Adjustable current limit senses high-side N-Channel MOSFET current

• Hiccup mode short-circuit protection

• No external current-sense resistor

• Internal soft-start current source

• Dual function COMP and EN pin allows low-power shutdown

• Available in small-size 10-pin MSOP and 10-pin MSOP ePad packages

Applications

• Point-of-load DC/DC conversion

• High-Current Power Supplies

• Telecom/Datacom and Networking Power Supplies

• Servers and Workstations

• Graphic cards and other PC Peripherals

• Set-top boxes

• LCD power supplies