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PDF AAT3672 Data sheet ( Hoja de datos )
| Número de pieza | AAT3672 | |
| Descripción | 1.6A Dynamic Battery Charger and Power Manager | |
| Fabricantes | Skyworks | |
| Logotipo |  |
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DATA SHEET
AAT3672
1.6A Dynamic Battery Charger and Power Manager
General Description
The AAT3672 BatteryManager is a highly integrated sin-
gle-cell (4.2V) lithium-ion/polymer battery charger and
system power management IC that enables simultane-
ous battery charging and system load management.
The AAT3672 provides charging current and system
power management from a single input that may be sup-
plied by an AC adapter or USB port power source. This
device allows the user to program the battery charge
current up to 1.6A depending on the current shared with
the system output. A battery charge timeout timer is
provided for charging safety and the charge termination
current is also user-programmable.
The AAT3672 employs a battery charge current reduc-
tion function that enables continued system operation in
the event the input source can not supply the required
load current. When operated under excessive thermal
conditions, the AAT3672 has a digitally controlled ther-
mal loop which allows the maximum possible charging
current for any given ambient temperature condition.
Battery temperature, voltage and charge state are mon-
itored for fault conditions. The AAT3672-1/-2 has two
status monitor output pins (STAT1 and STAT2), and the
AAT3672-3 has one status monitor output (STAT1) pro-
vided to indicate battery charge status by directly driving
external LEDs.
The AAT3672 is available in a Pb-free, thermally
enhanced, space-saving 14-pin 3 × 3mm TDFN package.
Features
• System Load Power Control from Either ADP or
Battery
• ADP Presence Automatically Routes Power from
Source to Load and Charges Battery
• Automatic Charge Reduction Loop to Minimize
Charge Time
• Digitally Controlled Thermal Protection
• Battery Power Enable
• Programmable Battery Charge Timer
• Battery Cell Temperature Sensing
• Charge Status Reporting (LEDs)
• Automatic Recharge Sequencing
• Battery Over-Voltage, Over-Current, and
Over-Temperature Protection
• System Load Current Limiting
• 14-pin 3 × 3mm TDFN Package
Applications
• Cellular Phones
• Digital Still Cameras
• Digital Video Cameras
• Global Positioning Systems (GPS)
• MP3 Players
• Handheld PCs
Typical Application
Adapter Input
Enable
CADP
10μF
Enable Input to Output
Enable Battery to Output
STAT1
STAT2
OUT
BAT
System Load
BAT+
ADP
AAT3672-1/-2
EN
ADP
CBAT
10μF
10kΩ
Temp
ENO
TS
ENBAT
CHRADP
CHR Threshold
Battery
Pack
ADPSET
CT
RSET
TERM
RTERM
GND
CT
Adapter Input
Enable 1
Enable 2
CADP
10μF
Enable Input to Output
Enable Battery to Output
STAT1
ADP
OUT
BAT
AAT3672-3
EN1
EN2
ENO
TS
ENBAT
CHRADP
System Load
BAT +
ADP
CBAT
10μF
10kΩ
Temp
Battery
CHR Threshold Pack
ADPSET
CT
RSET
TERM
RTERM
GND
CT
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201880B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012
1
1 page  
DATA SHEET
AAT3672
1.6A Dynamic Battery Charger and Power Manager
Electrical Characteristics (continued)1
VADP = 5V, TA = -25°C to +85°C; unless otherwise noted, typical values are TA = 25°C.
Symbol Description
Logic Control/Protection
VEN
VEN
VSTATx
TC
Input High Threshold
Input Low Threshold
Output Low Voltage
Fast Charge (Trickle Charge + Constant Current +
Constant Voltage Charges Together) Timeout
TTKL Trickle Charge Timeout
VBOVP
Battery Over-Voltage Protection Threshold
Conditions
STATx Pin Sinks 8mA
CCT = 0.1μF
IOCP
TS1
TS2
TLOOP_IN
TLOOP_OUT
TLOOP_REG
TSHDN
Battery Charge Over-Current Protection Threshold
High Temperature Threshold
Low Temperature Threshold
Digital Thermal Loop Entry Threshold
Digital Thermal Loop Exit Threshold
Digital Thermal Loop Regulated Temperature
Chip Thermal Shutdown Temperature
In All Modes
Threshold
Hysteresis
Min Typ Max Units
1.6
VCO(REG)
+ 0.1
28
58
VCO(REG)
+ 0.15
100
30
60
115
95
100
140
15
0.4
0.4
7
TC/8
VCO(REG)
+ 0.2
32
62
V
hour
V
%
ICH_CC
% VADP
% VADP
ºC
1. The AAT3672 is guaranteed to meet performance specifications over the -25°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201880B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012
5
5 Page 
DATA SHEET
AAT3672
1.6A Dynamic Battery Charger and Power Manager
Typical Characteristics
High Temperature Threshold
(VADP = 5V)
32
31.5
31
30.5
30
29.5
29
28.5
28
-25 -15 -5
5 15 25 35 45 55 65 75 85
Temperature (°C)
Low Temperature Threshold
(VADP = 5V)
62
61.5
61
60.5
60
59.5
59
58.5
58
-25 -15 -5
5 15 25 35 45 55 65 75
85
Temperature (°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201880B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012
11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet AAT3672.PDF ] | |
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