- 您現在的位置：買賣IC網 > PDF目錄384633 > LTC1760 (Linear Technology Corporation) Dual Smart Battery System Manager PDF資料下載
參數資料
| 型號： | LTC1760 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual Smart Battery System Manager |
| 中文描述： | 雙智能電池系統管理 |
| 文件頁數： | 13/44頁 |
| 文件大小： | 379K |
| 代理商： | LTC1760 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
LTC1760
13
sn1760 1760is
1 Overview
The LTC1760 is composed of an SMBus interface with
dual port capability, a sequencer for managing system
power and the charging and discharging of two batteries,
a battery charger controller, charge mux controller, power-
path controller, a 10-bit current DAC (I
DAC
) and 11-bit
voltage DAC (V
DAC
). When coupled with optional system
software for generating composite battery information, it
forms a complete Smart Battery System Manager for
charging and selecting two smart batteries. The battery
charger is controlled by the sequencer which uses the
level 3 SMBus interface to read ChargingVoltage(), Volt-
age(), ChargingCurrent(), Current(), Alarm() and
BatteryMode(). This information, together with thermistor
measurements allows the sequencer to select the charg-
ing battery and safely servo on voltage and current.
Charging can be accomplished only if the voltage at DCDIV
indicates that sufficient voltage is available from the input
power source, usually an AC adapter. The charge mux,
which selects the battery to be charged, is capable of
charging both batteries simultaneously. The charge mux
switch drivers are configured to allow charger current to
share between the two batteries and to prevent current
from flowing in a reverse direction in the switch. The
amount of current that each battery receives will depend
upon the relative capacity of each battery and the battery
voltage. This can result in significantly shorter charging
times (up to 50% for Li-Ion batteries) than sequential
charging of each battery.
The sequencer also selects which of the pairs of PFET
switches will provide power to the system load. If the
system voltage drops below the threshold set by the
LOPWR resistor divider, then all of the output-side PFETs
are turned on quickly. The input-side PFETs act as diodes
in this mode and power is taken from the highest voltage
source available at the DCIN, BAT1, or BAT2 inputs. The
input-side powerpath switch driver that is delivering power
then closes its input switch to reduce the power dissipa-
tion in the PFET bulk diode. In effect, this system provides
diode-like behavior from the FET switches, without the
attendant high power dissipation from diodes. The HOST
is informed of this 3-Diode mode status when it polls the
powerpath status register via the SMBus interface. High
speed powerpath switching at the LOPWR trip point is
handled autonomously.
Simultaneous discharge of both batteries is supported.
The switch drivers prevent reverse current flow in the
switches and automatically discharge both batteries into
the load, sharing current according to the relative capacity
of the batteries. Simultaneous dual discharge can increase
battery operating time by up to 10% by reducing losses in
the switches and reducing internal battery losses associ-
ated with high discharge rates.
2 The SMBus Interface
2.1 SMBus Interface Overview
The SMBus interface allows the LTC1760 to communicate
with two batteries and the SMBus Host. The SMBus
Interface supports true dual port operation by allowing the
SMBus Host to be connected to the SMBus of either
battery. The LTC1760 is able to operate as an SMBus
master or slave device.
References:
Smart Battery System Manager Specification: Revision
1.1, SBS Implementers Forum.
Smart Battery Data Specification: Revision 1.1, SBS
Implementers Forum.
Smart Battery Charger Specification: Revision 1.1, SBS
Implementers Forum
System Management Bus Specification: Revision 1.1,
SBS Implementers Forum
I
2
C-Bus and How to Use it: V1.0, Philips Semiconductor.
OPERATIOU
(Refer to Block Diagram and Typical Application Figure)
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1760CFW | Dual Smart Battery System Manager |
| LTC2286 | Dual 10-Bit, 65/40/25Msps Low Noise 3V ADCs |
| LTC2286CUP | Dual 10-Bit, 65/40/25Msps Low Noise 3V ADCs |
| LTC2286IUP | Dual 10-Bit, 65/40/25Msps Low Noise 3V ADCs |
| LTC2286UP | Dual 10-Bit, 65/40/25Msps Low Noise 3V ADCs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC1760CFW | 功能描述:IC MANAGER BATTERY DUAL 48TSSOP 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(jiān)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#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(jiān)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(jiān)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(jiān)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) |
發(fā)布緊急采購，3分鐘左右您將得到回復。