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参数资料
| 型号： | LTC4110EUHF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/52页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP MANAGER 38-QFN |
| 标准包装： | 2,500 |
| 功能： | 备份管理 |
| 电池化学： | 铅酸，锂离子，锂聚合物，镍镉，镍氢，超级电容器 |
| 电源电压： | 4.5 V ~ 19 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 供应商设备封装： | 38-QFN（5x7） |
| 包装： | 带卷 (TR) |
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LTC4110
Battery Backup
System Manager
FEATURES
DESCRIPTION
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Complete Backup Battery Manager for Li-Ion/
Polymer, Lead Acid, NiMH/NiCd Batteries and
Super Capacitors
Charge and Discharge Battery with Voltages Above
and Below the Input Supply Voltage
“No Heat” Battery Calibration Discharge Using
System Load
Automatic Battery Backup with Input Supply
Removal Using PowerPath? Control
Standalone for Li-Ion/Polymer, SLA, and Supercaps
Optional SMBus/I 2 C Support Allows Battery
Capacity Calibration Operation with Host
Over- and Under-Battery Voltage Protection
Adjustable Battery Float Voltage
Precision Charge Voltage ±0.5%
Programmable Charge/Calibration Current Up to
3A with ±3% Accuracy
Optional Temperature Quali?ed Charging
Wide Backup Battery Supply Range: 2.7V to 19V
Wide Input Supply Range: 4.5V to 19V
38-Lead (5mm × 7mm) QFN Package
The LTC ? 4110 is a complete single chip, high ef?ciency,
?yback battery charge and discharge manager with auto-
matic switchover between the input supply and the backup
battery or super capacitor. The IC provides four modes of
operation: battery backup, battery charge, battery calibra-
tion and shutdown. Battery backup and battery charge are
automatic standalone modes, while the optional calibration
mode requires a CPU host to communicate over an SMBus.
During calibration the ?yback charger is used in reverse
to discharge the battery with a programmable constant
current into the system load eliminating heat generation.
Three status outputs can be individually recon?gured over
the SMBus to become GPIOs. User programmable over-
discharge protection is provided. The SHDN pin isolates
the battery to support shipping the product with a charged
battery installed.
Multiple LTC4110s can be combined to form a redundant
battery backup system or increase the number of battery
packs to achieve longer backup run times.
The LTC4110 is available in a low pro?le (0.75mm), 38-pin
5mm × 7mm QFN package. The QFN features an exposed
APPLICATIONS
metal die mount pad for optimum thermal performance.
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath
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Backup Battery Systems
Server Memory Backup
Medical Equipment
High Reliability Systems
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
TYPICAL APPLICATION
Battery Backup System Manager
Server Backup System (In Backup Mode)
SYSTEM LOAD
BACKUP LOAD (DCOUT)
DCIN
0V
CURRENT FLOW
LTC4110
SYSTEM LOAD
(DC/DC, ETC.)
OFF
ON
ON
BATTERY
BACKUP
BACKUP LOAD
(MEMORY, ETC.)
SYSTEM
BATTERY
HOST CPU
MANAGER
CURRENT FLOW
BATTERY
UVLO
SET POINT
INID
DCDIV
BATID
LTC4110
CHGFET
DCHFET
I 2 C BUS
4110 TA01b
4110 F01
4110fb
1
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