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參數資料
| 型號： | LTC1760CFW |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Dual Smart Battery System Manager |
| 中文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| 封裝： | 6.10 MM, PLASTIC, TSSOP-48 |
| 文件頁數： | 1/44頁 |
| 文件大小： | 379K |
| 代理商： | LTC1760CFW |
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LTC1760
1
sn1760 1760is
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
Final Electrical Specifications
I
SMBus Charger/Selector for Two Smart Batteries*
I
Voltage and Current Accuracy within 0.2% of Value
Reported by Battery
I
Simplifies Construction of “Smart Battery System
Manager”
I
Includes All SMBus Charger V1.1 Safety Features
I
Supports Autonomous Operation without a Host
I
SMBus Switching for Dual Batteries with Alarm
Monitoring for Charging Battery at All Times
I
Pin Programmable Limits for Maximum Charge
Current and Voltage Improve Safety
I
Allows Both Batteries to Discharge Simultaneously
into Single Load with Low Loss (Ideal Diode)
I
Fast Autonomous Power Path Switching (<10
μ
s)
I
Low Loss Simultaneous Charging of Two Batteries
I
>95% Efficient Synchronous Buck Charger
I
AC Adapter Current Limiting* Maximizes Charge Rate
I
SMBus Accelerator Improves SMBus Timing**
I
Available in 48-Lead TSSOP Package
APPLICATIOU
FEATURES
DESCRIPTIO
U
Dual Smart Battery
System Manager
May 2003
The LTC
1760 Smart Battery System Manager is a highly
integrated level 3 battery charger and selector intended for
products using dual smart batteries. Three SMBus inter-
faces allow the LTC1760 to servo to the internal voltage
and currents measured by the batteries while allowing an
SMBus Host to monitor either battery’s status. Charging
accuracy is determined by the battery’s internal voltage
and current measurement, typically better than
±
0.2%.
A proprietary PowerPath
TM
architecture supports simulta-
neous charging or discharging of both batteries. Typical
battery run times are extended by up to 10%, while
charging times are reduced by up to 50%. The LTC1760
automatically switches between power sources in less
than 10
μ
s to prevent power interruption upon battery or
wall adapter removal.
The LTC1760 implements all elements of a version 1.1
“Smart Battery System Manager” except for the genera-
tion of composite battery information. An internal multi-
plexer cleanly switches the SMBus Host to either of the
two attached Smart Batteries without generating partial
messages to batteries or SMBus Host. Thermistors on
both batteries are automatically monitored for tempera-
ture and disconnection information (SafetySignal).
, LTC and LT are registered trademarks of Linear Technology Corporation.
PowerPath is a trademark of Linear Technology Corporation
*U.S. Patent No. 5,723,970 **U.S. Patent No. 6,650,174
I
Portable Computers and Instruments
I
Standalone Dual Smart Battery Chargers
I
Battery Backup Systems
TYPICAL APPLICATIO
Dual Battery Charger/Selector System Architecture
DC
IN
U
TIME (MINUTES)
B
3500
3000
2500
2000
1500
1000
500
0
3500
3000
2500
2000
1500
1000
500
0
1760 TA03
0
50
100
150
200
250
300
BAT1
CURRENT
BAT2
CURRENT
SEQUENTIAL
DUAL
BAT1
CURRENT
100
MINUTES
BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020)
REQUESTED CURRENT = 3A
REQUESTED VOLTAGE = 12.3V
MAX CHARGER CURRENT = 4.1A
BAT2
CURRENT
Dual vs Sequential Charging
LTC1760
SYSTEM
POWER
SMBus (HOST)
1760 TA01
SafetySignal 1
SMBus 1
SafetySignal 2
SMBus 2
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC1760CFW#PBF | 功能描述:IC MANAGER BATTERY DUAL 48TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關文件:STC3100 View All Specifications 特色產品:STC3100 - Battery Monitor IC 標準包裝:4,000 系列:- 功能:燃料，電量檢測計/監控器 電池化學:鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC1760CFW#PBF | 制造商:Linear Technology 功能描述:Battery Management IC 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 4.28A, TSSOP-48 |
| LTC1760CFW#TR | 功能描述:IC MANAGER BATTERY SYS 48-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC1760CFW#TRPBF | 功能描述:IC MANAGER BATTERY DUAL 48TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC1760CFWPBF | 制造商:Linear Technology 功能描述:Dual Smart Battery Sys. Manager TSSOP48 |
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