Specification	MIC4744YTSE

Current - Output	2 A
Frequency - Switching	4 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	Exposed Pad, 16-TSSOP
Package / Case [custom]	0.173 "
Package / Case [custom]	4.4 mm
Supplier Device Package	16-TSSOP-EP
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.9 V
Voltage - Output (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	0.6 V

MIC4744 Series

Dual 4 MHz 2A Buck Regulator

Part	Number of Outputs	Frequency - Switching	Voltage - Output (Min/Fixed)	Output Configuration	Topology	Voltage - Output (Max) [Max]	Synchronous Rectifier	Mounting Type	Output Type	Supplier Device Package	Function	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Package / Case [custom]	Package / Case	Package / Case [custom]	Current - Output
Microchip Technology MIC4744YTSE	2	4 MHz	0.6 V	Positive	Buck	5.5 V		Surface Mount	Adjustable	16-TSSOP-EP	Step-Down	-40 °C	125 ¯C	5.5 V	2.9 V	0.173 "	16-TSSOP Exposed Pad	4.4 mm	2 A
Microchip Technology MIC4744YTSE-TR	2	4 MHz	0.6 V	Positive	Buck	5.5 V		Surface Mount	Adjustable	16-TSSOP-EP	Step-Down	-40 °C	125 ¯C	5.5 V	2.9 V	0.173 "	16-TSSOP Exposed Pad	4.4 mm	2 A

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	188	$ 2.98
Microchip Direct	TUBE	1	$ 3.94
		25	$ 3.27
		100	$ 2.98
		1000	$ 2.89
		5000	$ 2.85
Newark	Each	100	$ 1.22

Description

General part information

MIC4744 Series

The MIC4744 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output. The MIC4744 operates at 4MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal P-Channel MOSFET of the MIC4744 allows efficiencies over 90%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4744 operates from 2.9V to 5.5V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

Documents

Technical documentation and resources

MIC4744 Data Sheet

Data Sheets

Product Change Notice EN

Datasheet