Specification	MIC2179-5.0YSM

Current - Output	1.5 A
Frequency - Switching	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	20-SSOP
Supplier Device Package	20-SSOP
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	16.5 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	5 V

MIC2179 Series

1.5A 200kHz Synchronous Buck Regulator

Part	Voltage - Output (Min/Fixed)	Function	Number of Outputs	Mounting Type	Package / Case	Voltage - Input (Max) [Max]	Topology	Output Type	Current - Output	Voltage - Input (Min) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Frequency - Switching	Output Configuration	Output Type	Voltage - Output (Max) [Max]
Microchip Technology MIC2179-3.3BSM	3.3 V	Step-Down	1	Surface Mount	20-SSOP	16.5 V	Buck	1.81 mOhm	1.5 A	4.5 V	-40 °C	125 ¯C	20-SSOP	200 kHz	Positive
Microchip Technology MIC2179-3.3BSM-TR	3.3 V	Step-Down	1	Surface Mount	20-SSOP	16.5 V	Buck	1.81 mOhm	1.5 A	4.5 V	-40 °C	125 ¯C	20-SSOP	200 kHz	Positive
Microchip Technology MIC2179YSM	1.245 V	Step-Down	1	Surface Mount	20-SSOP	16.5 V	Buck		1.5 A	4.5 V	-40 °C	125 ¯C	20-SSOP	200 kHz	Positive	Adjustable	16.5 V
Microchip Technology MIC2179BSM	1.245 V	Step-Down	1	Surface Mount	20-SSOP	16.5 V	Buck		1.5 A	4.5 V	-40 °C	125 ¯C	20-SSOP	200 kHz	Positive	Adjustable	16.5 V
Microchip Technology MIC2179-5.0YSM	5 V	Step-Down	1	Surface Mount	20-SSOP	16.5 V	Buck	1.81 mOhm	1.5 A	4.5 V	-40 °C	125 ¯C	20-SSOP	200 kHz	Positive

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Microchip Direct	TUBE	1	$ 7.25
		25	$ 6.04
		100	$ 5.51
		1000	$ 5.31
		5000	$ 5.27

Description

General part information

MIC2179 Series

The Micrel MIC2179 is a 200kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications.

The MIC2179 operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 1.5A output current. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions. It also features a shutdown mode that reduces quiescent current to less than 5µA.

The MIC2179 achieves high efficiency over a wide output current range by operating in either PWM or skip mode. The operating mode is externally selected, typically by an intelligent system, which chooses the appropriate mode according to operating conditions, efficiency, and noise requirements. The switching frequency is preset to 200kHz and can be synchronized to an external clock signal of up to 300kHz.