Specification	MIC2178YWM

Current - Output	2.5 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	0.295 in
Package Name	20-SOIC
Package Width	7.5 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

MIC2178 Series

2.5A 200kHz Synchronous Buck Regulator

Part	Function	Voltage - Input (Max)	Output Type	Synchronous Rectifier	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Input (Min)	Number of Outputs	Mounting Type	Topology	Voltage - Output (Max)	Frequency - Switching	Output Configuration	Current - Output	Package Name	Package Length	Package Width	Voltage - Output (Min/Fixed)
Microchip Technology MIC2178YWM-TR	Step-Down	16.5 V	Adjustable	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck	16.5 V	200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	1.245 V
Microchip Technology MIC2178-3.3BWM-TR	Step-Down	16.5 V	Fixed	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck		200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	3.3 V
Microchip Technology MIC2178-3.3BWM	Step-Down	16.5 V	Fixed	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck		200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	3.3 V
Microchip Technology MIC2178YWM	Step-Down	16.5 V	Adjustable	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck	16.5 V	200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	1.245 V
Microchip Technology MIC2178-5.0BWM-TR	Step-Down	16.5 V	Fixed	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck		200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	5 V
Microchip Technology MIC2178-5.0BWM	Step-Down	16.5 V	Fixed	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck		200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	5 V
Microchip Technology MIC2178BWM	Step-Down	16.5 V	Adjustable	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck	16.5 V	200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	1.245 V
Microchip Technology MIC2178-5.0YWM-TR	Step-Down	16.5 V	Fixed	No	125 °C	-40 °C	4.5 V	1	Surface Mount	Buck		200 kHz	Positive	2.5 A	20-SOIC	0.295 in	7.5 mm	5 V

Pricing

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

Distributor	Package	Quantity	$	Updated

Microchip Direct	TUBE	1	$ 7.98	1m+
		25	$ 6.65
		100	$ 6.03
		1000	$ 5.84
		5000	$ 5.77

CAD

3D models and CAD resources for this part

Description

General part information

MIC2178 Series

The MIC2178 is a 200kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications.The MIC2178 operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 2.5A 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 MIC2178 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.

The MIC2178 uses current-mode control with internal current sensing. Current-mode control provides superior line regulation and makes the regulator control loop easy to compensate. The output is protected with pulse-by-pulse current limiting and thermal shutdown. Undervoltage lockout turns the output off when the input voltage is less than 4.5V.

Documents

Technical documentation and resources

MIC2178 - 2.5A Synchronous Buck Regulator

Data Sheets