Specification	MIC2549A-1YTS-TR

Current - Output (Max) [Max]	3 A
Fault Protection	Reverse Current, Over Temperature, Current Limiting (Adjustable)
Features	Slew Rate Controlled, Status Flag
Input Type	Non-Inverting
Interface	On/Off
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	High Side
Output Type	N-Channel
Package / Case	14-TSSOP
Package / Case [custom]	0.173 "
Package / Case [custom]	4.4 mm
Ratio - Input:Output [custom]	1:1
Rds On (Typ)	35 mOhm
Supplier Device Package	14-TSSOP
Switch Type	USB Switch
Voltage - Load [Max]	5.5 V
Voltage - Load [Min]	2.7 V
Voltage - Supply (Vcc/Vdd)	False

MIC2549A Series

Adjustable 3A Single High-Side Current Limit Power Switch

Part	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output (Max) [Max]	Mounting Type	Output Type	Number of Outputs	Input Type	Package / Case	Package / Case	Package / Case	Features	Fault Protection	Switch Type	Output Configuration	Interface	Ratio - Input:Output [custom]	Supplier Device Package	Voltage - Load [Max]	Voltage - Load [Min]	Rds On (Typ)	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Package / Case [custom]
Microchip Technology MIC2549A-1YN	85 °C	-40 °C	3 A	Through Hole	N-Channel	1	Non-Inverting	0.3 in	8-DIP	7.62 mm	Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	8-PDIP	5.5 V	2.7 V	35 mOhm
Microchip Technology MIC2549A-2BM	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		8-SOIC		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	8-SOIC	5.5 V	2.7 V	35 mOhm	3.9 mm	0.154 in
Microchip Technology MIC2549A-2BM-TR	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		8-SOIC		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	8-SOIC	5.5 V	2.7 V	35 mOhm	3.9 mm	0.154 in
Microchip Technology MIC2549A-1YTS-TR	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		14-TSSOP		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	14-TSSOP	5.5 V	2.7 V	35 mOhm			0.173 "	4.4 mm
Microchip Technology MIC2549A-2YTS	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		14-TSSOP		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	14-TSSOP	5.5 V	2.7 V	35 mOhm			0.173 "	4.4 mm
Microchip Technology MIC2549A-1YM-TR	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		8-SOIC		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	8-SOIC	5.5 V	2.7 V	35 mOhm	3.9 mm	0.154 in
Microchip Technology MIC2549A-1YTS	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		14-TSSOP		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	14-TSSOP	5.5 V	2.7 V	35 mOhm			0.173 "	4.4 mm
Microchip Technology MIC2549A-2YM-TR	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		8-SOIC		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	8-SOIC	5.5 V	2.7 V	35 mOhm	3.9 mm	0.154 in
Microchip Technology MIC2549A-2BTS-TR	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		14-TSSOP		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	14-TSSOP	5.5 V	2.7 V	35 mOhm			0.173 "	4.4 mm
Microchip Technology MIC2549A-1BTS	85 °C	-40 °C	3 A	Surface Mount	N-Channel	1	Non-Inverting		14-TSSOP		Slew Rate Controlled Status Flag	Current Limiting (Adjustable) Over Temperature Reverse Current	USB Switch	High Side	On/Off	1:1	14-TSSOP	5.5 V	2.7 V	35 mOhm			0.173 "	4.4 mm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2500	$ 4.19
Microchip Direct	T/R	1	$ 5.53
		25	$ 4.60
		100	$ 4.19
		1000	$ 3.50
		5000	$ 3.24
		10000	$ 3.01
Newark	Each (Supplied on Full Reel)	100	$ 4.32

Description

General part information

MIC2549A Series

The MIC2545A and MIC2549A are integrated high-side power switches optimized for low-loss DC power switching and other power-management applications, including advanced configuration and power interface (ACPI). The MIC2545A/49A is a cost-effective, highly-integrated solution that requires few external components to satisfy USB and ACPI requirements.

Load current management features include a precision, resistor-programmable output current-limit and a soft-start circuit, which minimizes inrush current when the switch is enabled. Thermal shutdown, along with adjustable current-limit, protects the switch and the attached device.

The MIC2545A/49A's open-drain flag output is used to indicate current-limiting or thermal shutdown to a local controller. The MIC2549A has an additional internal latch which turns the output off upon thermal shutdown, providing robust fault control. The enable signal is compatible with both 3V and 5V logic, and is also used as the thermal shutdown latch reset for the MIC2549A.

Documents

Technical documentation and resources

Datasheet

Supporting Extra LEDs with the KS8695X 5-Port Integrated High Performance Gateway

Application Notes

Programmable Current-Limit High-Side Switch

Data Sheets

Liquid Crystal Display Power Supplies

Application Notes