ACT3780QY410-T [ACTIVE-SEMI]
ActivePath Battery Charger; ActivePath电池充电器
| 型号： | ACT3780QY410-T |
| 厂家： | 
ACTIVE-SEMI, INC |
| 描述： | ActivePath Battery Charger |
| 文件： | 总2页 (文件大小：101K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACT3780
Product Brief, 05-Dec-12
ActivePathTM Battery Charger
FEATURES
GENERAL DESCRIPTION
• ActivePathTM System Power Selection of Best
The ACT3780 is a complete battery-charging and
system power management solution for portable
hand-held equipment using single-cell Lithium-
based batteries. The ACT3780 incorporates Active-
Semi's proprietary ActivePath architecture which
automatically selects the best available input supply
for the system.
Available Input Supply
• 50mΩ Battery Switch for Highest Efficiency
• Dynamic Control of Charging Current Allowing
System to Draw Maximum Load from AC/USB
Input
• ±0.5% Battery Charge Voltage Accuracy
• Up to 12V Input with Over Voltage Protection
• Thermal Regulation for Charge Control
The ActivePath architecture performs three
important functions: First, the battery is charged
while powering with the system, minimizing current
draw from the battery while ensuring that sufficient
current is available to power the system. Second, if
no input supply is available, system power is
automatically switched to the battery. And finally, if
the system load-requirement exceeds the capability
of the input supply, ActivePath automatically
supplements the input with the battery to satisfy the
system's power requirements.
• Charge Status Outputs for LED or System
Interface
• Battery Voltage Level Indication
• Programmable Fast Charge Current
• Programmable Charging Timer
• Low Reverse Leakage Current
• Short-Circuit and Thermal Protection
• Preconditioning for Deeply Depleted Battery
• Low Quiescent Current Standby Mode
In addition to ActivePath, the ACT3780 charger
features
a
complete, high-accuracy (±0.5%),
thermally regulated, stand-alone single cell linear
Li+ charger with an integrated 12V power
MOSFET. The ACT3780 is available in a thermally
enhanced 4mm × 4mm Thin-QFN44-20.
• Space-Saving, Thermally-Enhanced
TQFN44-20 Packages
APPLICATIONS
• Personal Navigation Devices
• Smart Mobile Phones
• Blue-Tooth Devices
• Portable Media Players
• Portable Devices
ActivePath DIAGRAM
Innovative PowerTM
- 1 -
www.active-semi.com
ActivePathTM is a trademark of Active-Semi.
Copyright © 2012 Active-Semi, Inc.
ACT3780
Product Brief, 05-Dec-12
ORDERING INFORMATIONcd
BATTERY
PART NUMBER
SYSTEM
VOLTAGE
TEMPERATURE
RANGE
PACKAGE
PINS
VOLTAGE
ACT3780QY-T
4.2V
4.1V
4.6V
4.6V
TQFN44-20
TQFN44-20
20
20
-40°C to 85°C
-40°C to 85°C
ACT3780QY410-T
c: 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.
d: Standard product options are identified in this table. Contact factory for custom options. Minimum order quantity is 12,000 units.
FUNCTIONAL BLOCK DIAGRAM
Body
Control
(Optional)
ACT3780
CHG_IN
SYS System Supply
AC Adaptor
USB
Body
Control
BAT
ACIN
EN
+
-
CURRENT SENSE
VOLTAGE SENSE
PRECONDITION
REF
nBLV1
nBLV2
nACOK
CHGLEV
VTHH
+
–
TH
ISET
Thermal
Shutdown
+
–
System and
Charger Control
VTHL
nSTAT3
nSTAT2
nSTAT1
DCCC
BTR
EP
THERMAL
REGULATION
G
110°C
Innovative PowerTM
- 2 -
www.active-semi.com
ActivePathTM is a trademark of Active-Semi.
Copyright © 2012 Active-Semi, Inc.
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