austriamicrosystems AS3607 EVAL BOARD Manual

AS3606/7
Preliminary Application Note - Confidential
AS3606/7 – AN01 - Evalboard
System PMU with HV Back Light Driver

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 26V. 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.
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