MIC2169A Series

14.5V, 500 KHz, PWM Synchronous Buck Controller IC

Catalog

14.5V, 500 KHz, PWM Synchronous Buck Controller IC

Part	Frequency - Switching	Output Type	Supplier Device Package	Duty Cycle (Max) [Max]	Output Phases	Control Features	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case [x]	Package / Case [x]	Output Configuration	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Function	Number of Outputs	Topology	Mounting Type
Microchip Technology MIC2169AYMM	500 kHz	Transistor Driver	10-MSOP	92 %	1	Current Limit Enable	-40 °C	125 ¯C	10-MSOP 10-TFSOP	3 mm	0.118 in	Positive	3 V	14.5 V	Step-Down	1	Buck	Surface Mount
Microchip Technology MIC2169AYMM-TR	500 kHz	Transistor Driver	10-MSOP	92 %	1	Current Limit Enable	-40 °C	125 ¯C	10-MSOP 10-TFSOP	3 mm	0.118 in	Positive	3 V	14.5 V	Step-Down	1	Buck	Surface Mount
Microchip Technology MIC2169YMM-TR	500 kHz	Transistor Driver	10-MSOP	92 %	1		-40 °C	125 ¯C	10-MSOP 10-TFSOP	3 mm	0.118 in	Positive	3 V	14.5 V	Step-Down	1	Buck	Surface Mount
Microchip Technology MIC2169BYMM-TR	500 kHz	Transistor Driver	10-MSOP	92 %	1		-40 °C	85 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	Positive	3 V	14.5 V	Step-Down	1	Buck	Surface Mount
Microchip Technology MIC2169BYMM	500 kHz	Transistor Driver	10-MSOP	92 %	1		-40 °C	85 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	Positive	3 V	14.5 V	Step-Down	1	Buck	Surface Mount
Microchip Technology MIC2169ABMM	500 kHz	Transistor Driver	10-MSOP	92 %	1	Current Limit Enable	-40 °C	125 ¯C	10-MSOP 10-TFSOP	3 mm	0.118 in	Positive	3 V	14.5 V	Step-Down	1	Buck	Surface Mount

Catalog

14.5V, 500 KHz, PWM Synchronous Buck Controller IC

Key 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 shutdown

• + Small size MSOP 10-lead package

Description

The MIC2169A is a high-efficiency, simple to use 500kHz PWM synchronous buck control IC housed in a small MSOP-10 package. The MIC2169A allows 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 down to 0.8V. The adaptive all Channel MOSFET drive scheme allows efficiencies over 95% across a wide load range. The MIC2169A senses current across the high-side N-Channel MOSFET, eliminating the need for an expensive and lossy current-sense resistor. Current limit accuracy is maintained by a positive temperature coefficient that tracks the increasing RDS(ON) of the external MOSFET. Further cost and space are saved by the internal in-rush-current limiting digital soft-start. The MIC2169A is available in a 10-pin MSOP package, with a wide junction operating range of -40°C to +125°C.