AS3606 datasheet(2/71 Pages) AMSCO

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AS3606 AS3607

System PMU with HV Back Light Driver

www.austriamicrosystems.com

Revision 1.03

1 - 70

Data Sheet

1 General Description

The AS3606/07 is an ultra compact System PMU with integrated

battery charger and HV back light driver.

The device offers advanced power management functions. All

necessary ICs and peripherals in a battery powered mobile device

are supplied by the AS3606/07. It features 3 DCDC converters as

well as 5 low noise LDOs. The different regulated supply voltages

are programmable via the serial control interface.

The step-up converter for the backlight can operate up to 30V. Both

constant voltage (OLED supply) as well as constant current (white

LED backlight) operations with 2 current sinks are possible. An

internal voltage protection is limiting the output voltage in the case of

external component failures.

AS3606/07 also contains a Li-Ion battery charger with constant

current and constant voltage. The maximum charging current is 1A.

An integrated battery switch and an optional external switch are

separating the battery during charging or whenever an external

power supply is present. With this switch it is also possible to operate

with no or deeply discharged batteries. A programmable current limit

can be used to control the maximum current used from a USB

supply.

The single supply voltage may vary from 2.7V to 5.5V.

2 Key Features

Power Management

Voltage Generation

3 DCDC step down regulators

- DVM (0.61V-3.3V, 700mA)

- 50µA quiescent current

- Selectable switching frequency (2 or 1MHz)

- 1.4A with combined DCDC 2 & 3

1 LDO low noise 2.7V (2.3-3.5V), 100mA

3 or 4 LDOs low noise

- 1.2-3.5V; 150/250mA

- 30µA quiescent current (low power mode)

Power supply supervision (LDO5)

4sec and 8sec emergency shut-down

Hibernation function

HV Backlight Driver

Step up for 30V backlight with internal transistor

Voltage control mode and over-voltage protection

2 programmable current sink (max. 38mA)

Max. 20mA@50V (with ext. transistor) or 500mA@5V

Possible external PWM dimming input

Battery Charger

Prog. trickle charging (25-265mA)

Prog. constant current charging (94-1060mA)

Prog. constant voltage charging (3.9V-4.25V)

Charger time-out and temperature supervision

Selectable current limitation for USB mode

Integrated battery switch & ideal diode

External battery switch control output

General

Battery and Temperature Supervisor

2 or 4 General Purpose IOs

10bit general purpose ADC input

PWM dimming input or wake-up input

Status output for: charger, low battery, power good and power-

up key

OTP Programmable BOOT Sequence

Programmable regulator default voltages

Programmable start-up sequence

Applicable for LDO 1-4 and DCDC 1-3

Control Interface

I2C control lines, including watchdog

Power-Up input

Interrupt output

Bidirectional reset, with selectable delay

Low power standby mode, 160µA with LDO5 on

Power-On Reset Circuit

Packaging

QFN32 5x5mm or QFN36 6x6mm, 0.5mm pitch

3 Application

The devices are ideal for Portable Media Players and Portable

Navigation Devices, e-Books, Tablet PCs, etc

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