SC900661VW counter ic chip common ic chips digital ic circuits

Features

►Five LDO regulators in one package ‹

►I2C interface with multiple device capability ‹

► Independent I2C enable/disable of LDOs ‹

► Independent I2C control of output voltages ‹

►Low thermal impedance of 40°C per watt ‹

►150mV dropout at 150mA ‹

►Input range from 2.7V to 5.5V ‹

►Programmable power good fl ag ‹

►Minimal number of external components ‹

►Over temperature protection ‹

►Small 4mm x 4mm 20-lead MLPQ package ‹

►Small input/output fi lter capacitors ‹

►Programmable VOUT range

- 1.45V to 3.00V for LDOs A and B

- 1.75V to 3.30V for LDOs C, D and E

Description

 Typical Application Circuit Applications The SC900A is a highly integrated power management device for low power portable applications. The device contains fi ve adjustable low-dropout linear regulators (LDOs) with CMOS pass-devices as well as a band-gap reference, I 2C interface, and DACs to control the output voltages.

Many features of the SC900A are programmable through the I2C interface. These include the ability to independently turn on any combination of the fi ve regulators. All fi ve of the LDO output voltages are programmable in 50mV steps from 1.45V to 3.00V for LDOs A and B, and from 1.75V to 3.30V for LDOs C, D and E. Each LDO can have an active shutdown or nonactive shutdown program option through the interface. There is also a reset monitor fl ag that is associated with LDOA. In addition, the device has a separate programmable power good monitor fl ag that activates when one or more LDOs go out of regulation.

The SC900A offers signifi cant quiescent current and space savings to the system designer by sharing reference and biasing among fi ve LDOs. The small and thermally effi cient 20-lead MLPQ package make it ideal for use in portable products where minimizing layout area is critical.

Typical Application Circuit

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