AS3658
Product Brief
www.austriamicrosystems.com (ptr) Revision 1.4 / 20071217 1 - 3
AS3658
Power and Audio Management Unit for Portable Devices Product Brief
1 General Description
The AS3658 is highly integrated power and audio
management unit. It includes all the features from
the AS3654 and adds on top an 16 bit Audio ADC,
a second headphone am plifier, a microphone bias
with amplifier, a RTC with alarm and time function,
an unique ID block and three more LDOs.
2 Key Features
System Control
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Serial Control Interface
On/Off Control Module with Boot-ROM /
GPIO
Reset Generation for system controller
Programmable Interrupt Controller and
Watchdog
Low power off mode (9μA; 2.5V LDO on)
88 bit unique ID or Boot fuse array
Reset with long ON-Keypress (5s, SW-
Interuptable)
Touchscreen Interface (10 bit, interrupt)
Supply Voltage Generation
2 RF Programmable Low Noise LDOs
(250mA)
(1 LDO can be a current controlled switch
for hotplug (200mA +/-40%))
1 RF Programmable Low Noise LDO
(400mA)
4 Programmable Dig. Low Power
LDOs(200mA)
2 General Purpose PWM DC/DC step up
converter with three programmabl e current
sinks (e.g. for white led); for current mode
feedback is automatically slected
(DCDC_CURR1,2,3)
3 General Purpose high efficiency DC/DC
step down converter (DCDC 1 support
DVM)
1 Low noise charge pump with 5V output
voltage
1 Ultra Low Power 2.5V LDO (always on)
Current sinks
4 programmable(8-bit) from 0. 15mA to
38.25mA (+/-5% ) optional useable as
GPIOs
3 programmable high voltage (15V) (8-bit)
from 0.15mA to 38.25mA (+/-5% )
internal PWM generator (extende d time
range)
(can control DCDC_CURR1,2,3)
10-bit 40μs Successive Approximation ADC
Two external Inputs (ADC_IN1, ADC_IN2)
Battery Management
Full featured chemistry independent step
down charger with Gas Gauge and Current
limitation
High Current (1.0A) Linear Charger with
external pass transistor (no SD charger)
0.1 Ω Battery switch for start-up and trickle
charge
Integrated USB charger up to 880mA (can
be used as wall adapter charg er); current
accuracy 440-500mA for USB specificati on,
in-circuit trimmable (+/-1.2% trimsteps)
Autonomous Battery Temperature
Supervision (0°C-45°C or 0°C- 50°C) for
10k and 100k NTC
Charging Timeout (1h-8h in 3 0min steps)
Charging in Stanby mode
Completely Autonomous (no SW)
Power Management Features
Wide Battery Supply Range 3.0…5.5V
High Accuracy Reference (±1%)
Thermal and Current Protection (int.
sensor)
Standby Mode exit by interrupt
e.g.Onkey/RTC
Audio
94dB Audio DAC, 16-48kHz sampling rate
Two Digital Audio Inputs (2 x I2S interface)
2.9V low Noise LDO for Audio DAC
Two Headphone Amplifier Output with GND
separation
Two I2S Inputs and one I2S Output
I2S master mode with programmable
sample rate (controlled by internal PLL)
GND Buffer for Headphone Amplifier
Line/ Headphone outputs with GND
separation
Audio ADC, 82dB SNR with 16ksps
Mono Microphone Supply and Amplifier
5 Band Adjustable Audio Equalizer (+/-
12dB in 3dB gain steps)
SPDIF Output
Audio Mixer and Gain Stages
PCM Interface
Real Time Clock (RTC)
Alarm and Time function
Repeated Wakeup (every sec. or minute)
32kHz output
Backup Battery Charger and Switchover
Programmable System clock
1.6 MHz to 2.3 MHz with 100 kHz steps
Package
BGA124 8x8mm, 0.5mm pitch (can be
assembled without microvia boards)
3 Application
PDA, PMP, GPS-Navigation System
1 Cell Li+ or 3 Cell NiMH po wered devices
AS3658
Product Brief
Figure 1 – Blockdiagram AS3658
Step Down DCDC
(Input 5V-15V/50V)
VCHARGER
VBUS
VSUPPLY
USB
Charger
(<800mA)
Step Down
Charger
Fuel
Gauge
DCDC
Step Down
DVM
VOUT1
DCDC
Step Down
VOUT2
DCDC
Step Down
VOUT3
LiIon Battery
LDO
0.75V-2.5V
VDIG1
200mA
VSUPPLY,
VOUT1-3
LDO
0.75V-2.5V
VDIG2
200mA
LDO
1.85V-3.4V VRF1
400mA
LDO
1.85V-3.4V VRF2
250mA
Charge
Pump VCPOUT
5V/100mA
DCDC
Step Up
(Voltage)
VSTEPUP1
General
Purpose
ADC Watchdog Overtemp
Protection
Interrupt Voltage
Monitors /
Reset Boot ROM
Two Wire
Interface
I2S
I2S / PCM
I2S I/O 1
Line
Out
Headphone
Out
GPIO or
Current
Sources
Four GPIO
or Current
Sources
LineIn LineOut Headphone
LDO
2.9V
VDAC
AS3658
Power and Audio
M an agement Unit
1 x 0.6V-3.4V / up to 1600mA
2 x 0.6V-3.4V / 500mA
SCL
SDA
DCDC
Step Up
(Voltage or
Current)
VSTEPUP2
2
nd
Headphone Out
(e.g. FM Transmitter)
LDO
1.85V-3.4V VRF3
250mA
LDO
0.75V-2.5V VDIG4
200mA
I2S
I2S Output 3
SPDIF
SPDIF Output 4
5 Band
Equalizer -40.5dB
to +6dB
-34.5dB
to +12dB Mic (mono)
Bias+Amp
Microphone
and MicSupply
Touchscreen
I/F (10 Bit)
Audio supply
LDO
0.75V-2.5V
VDIG3
200mA
RTC &
Alarm Backup
Bat. Chrg
88bit
PROM Unique
ID
Boot
Voltages &
Sequence Boot ROM Index RPROGRAM
Touchscreen
I/F
Interrupt
alternative function
18bit
DAC
16bit/16ks
ADC
94dB SNR
48ks DAC
82dB SNR
16ks ADC
I2S I/O 2
or PCM
-40.5dB
to +6dB
www.austriamicrosystems.com (ptr) Revision 1.4 / 20071217 2 - 3
AS3658
Product Brief
Copyright
Copyright © 1997-2007, austriamicros ystems AG, Schloss Premstaetten, 8141 U nterpremstaetten, Austria-
Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reprod uced, adapted,
merged, translated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
Diclaimer
Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions
appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or b y
description regarding the information set forth herein or regarding the freedom of the described devices from
patent infringement. Austriamicrosystems AG reserves the right to change specific ations and prices at any time
and without notice. Therefore, prior to designing this product into a system, it is necessary to check with
austriamicrosystems AG for current informati on.
This product is intended for use in normal commercial applications. Applications requiring extended temperature
range, unusual environmental requirements, or high reliabilit y applications, such as military, medical l ife-support
or lifesustaining equipment are specifically not recommended without additional processing by
austriamicrosystems AG for each application. F or shipments of less than 100 parts the manufacturing flow might
show deviations from the standard production flow, such as test flow or test location.
The information furnished her e b y austriamicrosystems AG is believed to be correct and accurate. However,
austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not
limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
special, incidental or conseq uential damages, of any kind, in connection with or arising out of the furnishing,
performance or use of the technical data herein. No obligation or li ability to recipient or any third party shall arise
or flow out of austriamicrosystems AG rendering of technical or other servic es.
Contact Information
Headquarters
austriamicrosystems AG
A-8141 Schloss Premstätten, Austria
T. +43 (0) 3136 500 0
F. +43 (0) 3136 5692
For Sales Offices, Distributors and Representatives, please visit:
http://www.austriamicrosystems.com/contact
www.austriamicrosystems.com (ptr) Revision 1.4 / 20071217 3 - 3
