Active-Semi
FEATURES
•
ActivePath
TM
Li+ Charger with System Power
Selection
•
Six Integrated Regulators
−
1.3A High Efficiency Step-Down DC/DC
−
1.0A High Efficiency Step-Down DC/DC
−
0.55A High Efficiency Step-Down DC/DC
−
2×360mA Low Noise, High PSRR LDOs
−
30mA RTC LDO / Backup Battery Charger
•
I
2
C
TM
Serial Interface
•
Minimal External Components
ACT8810
Rev 8, 08-Oct-10
Eight Channel
ActivePath
TM
Power Management IC
GENERAL DESCRIPTION
The patent-pending ACT8810 is a complete, cost
effective, highly-efficient
ActivePMU
TM
power
management solution that is ideal for a wide range of
high performance portable handheld applications such
as personal navigation devices (PNDs). This device
integrates the
ActivePath
TM
complete battery charging
and management system with six power supply
channels.
The
ActivePath
architecture automatically selects the
best available input supply for the system. If the
external input source is not present or the system load
current is more than the input source can provide, the
ActivePath
supplies additional current from the battery
to the system. The charger is a complete, thermally-
regulated, stand-alone single-cell linear Li+ charger
that incorporates an internal power MOSFET.
REG1, REG2, and REG3 are three independent,
fixed-frequency, current-mode step-down DC/DC
converters that output 1.3A, 1.0A, and 0.55A,
respectively. REG4 and REG5 are high performance,
low-noise, low-dropout linear regulators that output
up to 360mA each. REG6 is a RTC LDO that
outputs up to 30mA for a real time clock. Finally, an
I
2
C serial interface provides programmability for the
DC/DC converters and LDOs.
The ACT8810 is available in a tiny 5mm x 5mm 40-
pin Thin-QFN package that is just 0.75mm thin.
•
Compatible with USB or AC-Adapter
Charging
•
5mm × 5mm, Thin-QFN (TQFN55-40) Package
−
Only 0.75mm Height
−
RoHS Compliant
APPLICATIONS
•
Personal Navigation Devices
•
Portable Media Players
•
Smart Phones
SYSTEM BLOCK DIAGRAM
CHG_IN
CHGLEV
DCCC
ISET
ACIN
nSTAT0
nSTAT1
TH
BTR
nPBIN
nIRQ
nRSTO
SCL
SDA
ON1
ON2
ON3
VSEL
Battery
Programmable
Up to 1A
VSYS
REG1
Step-Down
DC/DC
REG2
Step-Down
DC/DC
REG3
Step-Down
DC/DC
System
Control
REG4
LDO
REG5
LDO
OUT1
Adjustable, or
0.8V to 4.4V
Up to 1.3A
OUT2
Adjustable, or
0.8V to 4.4V
Up to 1.0A
OUT3
Adjustable, or
0.8V to 4.4V
Up to 0.55A
OUT4
0.9V to 3.3V
Up to 360mA
OUT5
0.9V to 3.3V
Up to 360mA
OUT6
0.9V to 3.3V
Up to 30mA
ActivePath
TM
&
Single-Cell Li+
Battery Charger
ACT8810
Active
PMU
TM
REG6
RTC_LDO
Innovative Power
TM
ActivePMU
TM
and
ActivePath
TM
are trademarks of Active-Semi.
I
2
C
TM
is a trademark of NXP.
-1-
www.active-semi.com
Copyright © 2010 Active-Semi, Inc.
Active-Semi
TABLE OF CONTENTS
ACT8810
Rev 8, 08-Oct-10
GENERAL INFORMATION ..........................................................................................P. 01
Functional Block Diagram ...................................................................................................... p. 03
Ordering Information .............................................................................................................. p. 04
Pin Configuration .................................................................................................................... p. 04
Pin Descriptions ..................................................................................................................... p. 05
Absolute Maximum Ratings.................................................................................................... p. 07
SYSTEM MANAGEMENT ...........................................................................................P. 08
Register Descriptions ............................................................................................................. p. 08
I
2
C Interface Electrical Characteristics ................................................................................... p. 09
Electrical Characteristics ........................................................................................................ p. 10
Register Descriptions ............................................................................................................. p. 11
Typical Performance Characteristics...................................................................................... p. 12
Functional Description ............................................................................................................ p. 13
STEP-DOWN DC/DC CONVERTERS ..........................................................................P. 17
Electrical Characteristics ........................................................................................................ p. 17
Typical Performance Characteristics...................................................................................... p. 20
Register Descriptions ............................................................................................................. p. 22
Functional Description ............................................................................................................ p. 28
LOW-DROPOUT LINEAR REGULATORS ..................................................................P. 31
Electrical Characteristics ........................................................................................................ p. 31
Typical Performance Characteristics...................................................................................... p. 33
Register Descriptions ............................................................................................................. p. 34
Functional Description ............................................................................................................ p. 36
RTC LOW-DROPOUT LINEAR REGULATOR ............................................................P. 37
Electrical Characteristics ........................................................................................................ p. 37
Register Descriptions ............................................................................................................. p. 38
Functional Description ............................................................................................................ p. 39
ActivePath
TM
CHARGER .............................................................................................P. 40
Electrical Characteristics ........................................................................................................ p. 40
Typical Performance Characteristics...................................................................................... p. 42
Functional Description ............................................................................................................ p. 44
PACKAGE INFORMATION ..........................................................................................P. 53
Innovative Power
TM
ActivePMU
TM
and
ActivePath
TM
are trademarks of Active-Semi.
I
2
C
TM
is a trademark of NXP.
-2-
www.active-semi.com
Copyright © 2010 Active-Semi, Inc.
Active-Semi
FUNCTIONAL BLOCK DIAGRAM
Active-Semi
ACT8810
Rev 8, 08-Oct-10
Innovative Power
TM
ActivePMU
TM
and
ActivePath
TM
are trademarks of Active-Semi.
I
2
C
TM
is a trademark of NXP.
-3-
REG3
REG2
REG1
www.active-semi.com
Copyright © 2010 Active-Semi, Inc.
Active-Semi
ORDERING INFORMATION
PART
NUMBER
ACT8810QJ1C1-T
ACT8810QJ213-T
ACT8810QJ3EB-T
ACT8810QJ420-T
ACT8810QJ50F-T
ACT8810
Rev 8, 08-Oct-10
V
OUT1
/V
STBY1
3.3V/3.3V
1.2V/1.2V
3.3V/3.3V
3.3V/3.3V
1.2V/1.2V
V
OUT2
/V
STBY2
V
OUT3
/V
STBY3
V
OUT4
V
OUT5
V
OUT6
CONTROL SEQUENCE
1.1V/1.2V
1.8V/1.8V
1.2V/1.2V
1.8V/1.8V
3.3V/3.3V
1.2V/1.2V
1.0V/1.0V
1.8V/1.8V
1.1V/1.2V
1.8V/1.8V
1.2V
3.3V
1.5V
1.2V
3.3V
2.8V
1.2V
2.8V
3.3V
1.8V
3.3V
3.0V
3.3V
2.5V
3.0V
Sequence A
Sequence B
Sequence C
Sequence D
Sequence E
PACKAGING DETAILS
ACT8810QJ###-T
PACKAGE
TQFN55-40
PINS
40
TEMPERATURE
RANGE
-40°C to +85°C
PACKING
TAPE & REEL
: All Active-Semi components are RoHS Compliant and with Pb-free plating unless specified differently. The term Pb-free means
semiconductor products that are in compliance with current RoHS (Restriction of Hazardous Substances) standards.
: To select V
STBYx
as a output regulation voltage of REGx, tie VSEL to VSYS or a logic high.
:
Refer to the Control Sequence section for more information.
PIN CONFIGURATION
TOP VIEW
CHGLEV
nSTAT1
nSTAT0
nRSTO
REFBP
OUT4
nIRQ
ON2
INL
GA
TH
DCCC
BTR
ACIN
BAT
BAT
VSYS
VSYS
CHG_IN
ISET
OUT5
OUT6
VP3
Active-Semi
ACT8810
EP
SW3
GP3
OUT3
nPBIN
SDA
SCL
ON3
VSEL
ON1
Thin - QFN (TQFN55-40)
OUT2
VP2
SW2
GP2
GP1
SW1
VP1
OUT1
Innovative Power
TM
ActivePMU
TM
and
ActivePath
TM
are trademarks of Active-Semi.
I
2
C
TM
is a trademark of NXP.
-4-
www.active-semi.com
Copyright © 2010 Active-Semi, Inc.
Active-Semi
PIN DESCRIPTIONS
PIN
1
ACT8810
Rev 8, 08-Oct-10
NAME
TH
DESCRIPTION
Temperature Sensing Input. Connect to battery thermistor. TH is pulled up with a 100µA current internally.
See the
Battery Temperature Monitoring
section for more information.
Dynamic Charging Current Control. Connect a resistor to set the dynamic charging current control point.
A internal 100µA current source sets up a voltage that is used to compare with VSYS and dynamically
scale the charging current to maintain VSYS regulation. See the
Dynamic Charge Current Control
section for more information.
Safety Timer Program Pin. The resistance between this pin and GA determines the timers timeout
values. See the
Charging Safety Timers
section for more information.
AC Adaptor Detect. Detects presence of a wall adaptor and automatically adjusts the charge current
to the maximum charge current level. Do not leave ACIN floating.
Battery Charger Output. Connect this pin directly to the battery anode (+ terminal)
System Output Pin. Bypass to GA with a 10µF or larger ceramic capacitor.
2
DCCC
3
4
5, 6
7, 8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
BTR
ACIN
BAT
VSYS
Power Input for the Battery Charger. Bypass CHG_IN to GA with a capacitor placed as close to the
CHG_IN IC as possible. The battery charger are automatically enabled when a valid voltage is present on
CHG_IN. See the
CHG_IN Bypass Capacitor Selection
section for more information.
ISET
VSEL
ON1
OUT2
VP2
SW2
GP2
GP1
SW1
VP1
OUT1
ON3
SCL
SDA
Charge Current Set. Program the maximum charge current by connecting a resistor (R
ISET
) between
ISET and GA. See the
Charger Current Programming
section for more information.
Step-Down DC/DCs Output Voltage Selection. Drive to logic low to select default output voltage.
Drive to logic high to select secondary output voltage. See the
Output Voltage Selection Pin
section
for more information.
Independent Enable Control Input for REG1. Drive ON1 to VSYS or to a logic high for normal
operation, drive to GA or a logic low to disable REG1. Do not leave ON1 floating.
Output Feedback Sense for REG2. Connect this pin directly to the output node to connect the
internal feedback network to the output voltage.
Power Input for REG2. Bypass to GP2 with a high quality ceramic capacitor placed as close as
possible to the IC.
Switching Node Output for REG2. Connect this pin to the switching end of the inductor.
Power Ground for REG2. Connect GA, GP1, GP2 and GP3 together at a single point as close to the
IC as possible.
Power Ground for REG1. Connect GA, GP1, GP2 and GP3 together at a single point as close to the
IC as possible.
Switching Node Output for REG1. Connect this pin to the switching end of the inductor.
Power Input for REG1. Bypass to GP1 with a high quality ceramic capacitor placed as close as
possible to the IC.
Output Feedback Sense for REG1. Connect this pin directly to the output node to connect the
internal feedback network to the output voltage.
Enable Control Input for REG3. Drive ON3 to a logic high for normal operation, drive to GA or a logic
low to disable REG3. Do not leave ON3 floating.
Clock Input for I
2
C Serial Interface.
Data Input for I
2
C Serial Interface. Data is read on the rising edge of SCL.
Innovative Power
TM
ActivePMU
TM
and
ActivePath
TM
are trademarks of Active-Semi.
I
2
C
TM
is a trademark of NXP.
-5-
www.active-semi.com
Copyright © 2010 Active-Semi, Inc.
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