AA1850 Agamem Microelectronic, AA1850 Datasheet

Manufacturer Part Number

AA1850

Description

High-side Current Monitor

Manufacturer

Agamem Microelectronic

Datasheet

1.AA1850.pdf (6 pages)

AA1850

Agamem Microelectronics Inc.

PRELIMINARY

HIGH-SIDE CURRENT MONITOR

■ DESCRIPTION

The AA1850 is a high side current sense monitor. It takes a high side voltage developed

across a current shunt resistor and translates it into a proportional output current.

customer defined output resistor

converts

the output current into a reference voltage.

It operates over a wide input voltage range, from 2.5V to 20V and

makes it suitable for

many applications. A minimum operating current of 4uA, combined with its SOT23

package make it a right solution for portable equipment.

■ FEATURES

• Low cost and accurate high-side current monitor.

• Up to 2.5V sense voltage.

• 2.5V – 20V supply range.

• 4uA quiescent current.

• 1% typical accuracy.

■ APPLICATIONS

• Battery chargers

• DC motor control

• Over current monitor

• Power management

• Programmable current source

■ BLOCK DIAGRAM

www.agamem.com.tw

2008/4/8

AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER

NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT

ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED

HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.