MIC2169A - Micrel Semiconductor

MIC2169A PWM Synchronous Buck Controller

The MIC2169A is a high-efficiency, simple to use 500kHz PWM synchronous buck control IC housed in a small MSOP10 package. The MIC2169Aallows compact DC/DC solutions with a minimal external component count and cost. The MIC2169A operates from a 3V to 14.5V input, without the need of any additional bias voltage. The output voltage can be precisely regulated do.

Features

• 3V to 14.5V input voltage range
• Adjustable output voltage down to 0.8V
• Up to 95% efficiency
• 500kHz PWM operation
• Adjustable current limit senses high-side N-Channel MOSFET current
• No external current-sense resistor
• Adaptive gate drive increases efficiency
• Overvoltage protection protects the load in fault conditions
• Dual mode current limit speeds up recovery time
• Hiccup mode short-circuit protection
• Internal soft-start
• Dual function COMP and EN pin allows low-power shut- down
• Small size MSOP 10-lead package Applications
• Point-of-load DC/DC conversion
• .