Specification	MIC2179YSM-TR

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	Adjustable
Package Length	0.209 in
Package Name	20-SSOP
Package Width	5.3 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	16.5 V
Voltage - Input (Min)	4.5 V
Voltage - Output (Max)	16.5 V
Voltage - Output (Min/Fixed)	1.245 V

MIC2179 Series

Part	Synchronous Rectifier	Number of Outputs	Frequency - Switching	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Min/Fixed)	Output Type	Voltage - Input (Max)	Voltage - Input (Min)	Function	Output Configuration	Package Name	Mounting Type	Current - Output	Topology	Package Width	Package Length	Voltage - Output (Max)
Microchip Technology MIC2179-3.3YSM-TR	No	1	200 kHz	125 °C	-40 °C	3.3 V	Fixed	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in
Microchip Technology MIC2179-3.3BSM	No	1	200 kHz	125 °C	-40 °C	3.3 V	Fixed	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in
Microchip Technology MIC2179-3.3BSM-TR	No	1	200 kHz	125 °C	-40 °C	3.3 V	Fixed	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in
Microchip Technology MIC2179YSM	No	1	200 kHz	125 °C	-40 °C	1.245 V	Adjustable	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in	16.5 V
Microchip Technology MIC2179YSM-TR	No	1	200 kHz	125 °C	-40 °C	1.245 V	Adjustable	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in	16.5 V
Microchip Technology MIC2179BSM	No	1	200 kHz	125 °C	-40 °C	1.245 V	Adjustable	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in	16.5 V
Microchip Technology MIC2179-5.0YSM	No	1	200 kHz	125 °C	-40 °C	5 V	Fixed	16.5 V	4.5 V	Step-Down	Positive	20-SSOP	Surface Mount	1.5 A	Buck	5.3 mm	0.209 in

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	Cut Tape (CT)	1	$ 7.25	<1d
Microchip Direct	T/R	1	$ 7.25	1m+
		25	$ 6.04
		100	$ 5.51
		1000	$ 5.31
		5000	$ 5.27

CAD

3D models and CAD resources for this part

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.

Documents

Technical documentation and resources

MIC2179YSM-TR | Datasheet

Datasheet

PCI Express Signal Integrity and EMI

Application Notes