MIC2774 datasheet(1/18 Pages) MICROCHIP

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DS20006527A-page 1

MIC2774

Features

• Monitors Two Independent Power Supplies for

Undervoltage Conditions

• One Fixed and One User-Adjustable Input

• Choice of Ten Factory-Programmed Thresholds

• Adjustable Input can Monitor Supplies as Low as

0.3V

• Generates 140 ms (min.) Power-On Reset Pulse

• Manual Reset Input

• Choice of Active-High, Active-Low, or Open-Drain

Active-Low Reset Outputs

• Inputs May be Pulled Above VDD (7V abs. max.)

• /RST Output Valid Down to 1.2V

• Ultra-Low Supply Current, 3.5 µA Typical

• Rejects Brief Input Transients

• IttyBitty 5-pin SOT-23 Package

• Pin-Compatible upgrade for MAX6306/09/12

Applications

• Monitoring Processor ASIC or FPGA Core and

I/O Voltages

• PDAs, Handheld PCs

• Embedded Controllers

• Telecommunications Systems

• Power Supplies

• Wireless/Cellular Systems

• Networking Hardware

General Description

The MIC2774 is a dual power supply supervisor that

provides undervoltage monitoring, manual reset

capability, and power-on reset generation in a compact

5-pin SOT-23 package. Features include two

undervoltage detectors, one fixed and one adjustable,

and a choice of reset outputs. One undervoltage

detector compares VDD against a fixed threshold. Ten

factory-programmed thresholds are available. The

second, user-adjustable input is compared against a

300 mV reference. This low reference voltage allows

for the monitoring of voltages lower than those

supported by previous supervisor ICs.

The reset outputs are asserted at power-on and at any

time either voltage drops below the programmed

threshold voltage and remains asserted for 140 ms

(min.) after they subsequently rise back above the

threshold boundaries. Manual reset functionality can

be provided by a switch connected between ground

and the /MR input. A wide choice of voltage thresholds

provides for a variety of supply voltages and

tolerances. Hysteresis is included to prevent chattering

due to noise. Typical supply current is a low 3.5 µA.

Package Types

MIC2774

5-Lead SOT-23 (M5)

(H Version)

MIC2774

5-Lead SOT-23 (M5)

(L and N Versions)

/MR GND

IN

VDD

RST

3

1

5

2

4

/MR GND

IN

VDD

/RST

3

1

5

2

4

Dual Micropower Low Voltage Supervisor

Số phần tương tự - MIC2774

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Micrel Semiconductor	MIC2774	381Kb / 8P	Dual Micro-Power Low Voltage Supervisor Advance Information
	MIC2774	732Kb / 8P	Dual Micro-Power Low Voltage Supervisor
	MIC2774	456Kb / 11P	Dual Micro-Power Low Voltage Supervisor
	MIC2774H-17YM5	456Kb / 11P	Dual Micro-Power Low Voltage Supervisor
	MIC2774H-17YM5TR	456Kb / 11P	Dual Micro-Power Low Voltage Supervisor

More results

Mô tả tương tự - MIC2774

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	TS831	93Kb / 11P	MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW Oct-2000
STMicroelectronics	TS836	73Kb / 8P	MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE HIGH Sep-1998
California Micro Device...	CM3403	183Kb / 6P	Micropower Supply Voltage Supervisor (SVS)
	CM3400	218Kb / 9P	Micropower, Universal Supply Voltage Supervisor (SVS)
	CM3404	295Kb / 6P	Micropower Supply Voltage Supervisor (SVS)
STMicroelectronics	TS836	240Kb / 10P	MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE HIGH May-2003
Micrel Semiconductor	MIC2777	167Kb / 8P	Dual Micro-Power Low Voltage Supervisor
STMicroelectronics	TS831	263Kb / 11P	MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW Nov-2001
Micrel Semiconductor	MIC2772	233Kb / 9P	Dual Voltage Supervisor
Micrel Semiconductor	MIC2774	456Kb / 11P	Dual Micro-Power Low Voltage Supervisor

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