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參數(shù)資料
| 型號： | ISL88731 |
| 廠商： | Intersil Corporation |
| 英文描述： | SMBus Level 2 Battery Charger |
| 中文描述： | 2級的SMBus電池充電器 |
| 文件頁數(shù)： | 13/22頁 |
| 文件大小： | 474K |
| 代理商： | ISL88731 |
13
FN9258.0
November 20, 2006
Setting Charge Current
ISL88731 has a 16-bit ChargeCurrent register that sets the
battery charging current. ISL88731 controls the charge
current by controlling the CSOP-CSON voltage. The
register’s LSB translates to 10μV at CSON-CSOP. With a
10m
Ω
charge current R
sense
resistor (RS2 in “TYPICAL
APPLICATION CIRCUIT” on page 2), the LSB translates to
1mA charge current. The ISL88731 ignores the first 7 LSBs
and uses the next 6 bits to control the current DAC. The
charge-current range of the ISL88731 is 0 to 8.064A (using a
10m
Ω
current-sense resistor). All numbers requesting
charge current above 8.064A result in a current setting of
8.064A. All numbers requesting charge current between
0mA to 128mA result in a current setting of 0mA. The default
charge current setting at Power-On Reset (POR) is 0mA. To
stop charging, set ChargeCurrent to 0. Upon initial power up,
the ChargeVoltage and ChargeCurrent registers are reset to
0 and the charger is disabled. To start the charger, write valid
numbers to the ChargeVoltage and ChargeCurrent registers.
The ChargeCurrent register uses the Write-Word protocol
(Figure 18). The register code for ChargeCurrent is 0x14
(0b00010100). Table 3 shows the mapping between the
charge current set point and the ChargeCurrent number. The
ChargeCurrent register can be read back to verify its
contents.
The ISL88731 includes a fault limiter for low battery
conditions. If the battery voltage is less than 2.5V, the charge
current is temporarily set to 128mA. The ChargeCurrent
register is preserved and becomes active again when the
battery voltage is higher than 2.7V. This function effectively
provides a foldback current limit, which protects the charger
during short circuit and overload.
TABLE 3. CHARGE CURRENT (REGISTER 0x14) (10m
Ω
SENSE RESISTOR, RS2)
BIT
BIT NAME
DESCRIPTION
0
Not used.
1
Not used.
2
Not used.
3
Not used.
4
Not used.
5
Not used.
6
Not used.
7
Charge Current, DACI 0
0 = Adds 0mA of charger current.
1 = Adds 128mA of charger current.
8
Charge Current, DACI 1
0 = Adds 0mA of charger current.
1 = Adds 256mA of charger current.
9
Charge Current, DACI 2
0 = Adds 0mA of charger current.
1 = Adds 512mA of charger current.
10
Charge Current, DACI 3
0 = Adds 0mA of charger current.
1 = Adds 1024mA of charger current.
11
Charge Current, DACI 4
0 = Adds 0mA of charger current.
1 = Adds 2048mA of charger current.
12
Charge Current, DACI 5
0 = Adds 0mA of charger current.
1 = Adds 4096mA of charger current, 8064mA max.
13
Not used.
14
Not used.
15
Not used.
ISL88731
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PDF描述 |
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| ISL88731HRZ-T | SMBus Level 2 Battery Charger |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL88731AHRZ | 功能描述:電池管理 ISL88731A NOTEBOOK BATRY CHRGRRE-BRAND RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| ISL88731AHRZ | 制造商:Intersil Corporation 功能描述:IC BATTERY CHARGER LI-ION 8A TQFN-28 |
| ISL88731AHRZ-T | 功能描述:IC BATTERY CHRGR SMBUS 28-TQFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)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(xué):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(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| ISL88731CEVAL2Z | 功能描述:EVALUATION BOARD ISL88731 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| ISL88731CHRTZ | 制造商:Intersil Corporation 功能描述:PB-FREE ISL88731C NOTEBOOK BATTERY CHARGER (P6 SHRINK) - Rail/Tube 制造商:Intersil 功能描述:ISL88731C NOTEBOOK BATRY CHRGRP6 SHRINK |
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