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AS3606 Datasheet(PDF) 2 Page - ams AG

Part No. AS3606
Description  System PMU with HV Back Light Driver
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Maker  AMSCO [ams AG]
Homepage  http://www.ams.com
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AS3606 Datasheet(HTML) 2 Page - ams AG

 
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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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