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参数资料
| 型号： | MAX8731AETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/32页 |
| 文件大小： | 0K |
| 描述： | IC SMBUS LVL2 BATT CHRGR 28TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 多化学 |
| 电源电压： | 8 V ~ 26 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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SMBus Level 2 Battery Charger
with Remote Sense
Pin Description
PIN
1, 12
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
—
NAME
GND
ACIN
REF
CCS
CCI
CCV
DAC
IINP
SDA
SCL
V DD
ACOK
BATSEL
FBSA
FBSB
CSIN
CSIP
PGND
DLO
LDO
DCIN
LX
DHI
BST
V CC
CSSN
CSSP
BP
FUNCTION
Analog Ground. Connect directly to the paddle.
AC Adapter Detect Input. ACIN is the input to an uncommitted comparator.
4.096V Voltage Reference. Bypass REF with a 1μF capacitor to GND.
Input Current Regulation Loop-Compensation Point. Connect 0.01μF from CCS to GND.
Output Current Regulation Loop-Compensation Point. Connect 0.01μF from CCI to GND.
Voltage Regulation Loop-Compensation Point. Connect 10k Ω in series with 0.01μF to GND.
DAC Voltage Output. Bypass with 0.1μF from DAC to GND.
Input Current Monitor Output. IINP sources the current proportional to the current sensed across
CSSP and CSSN. The transconductance from (CSSP - CSSN) to IINP is 3mA/V.
SMBus Data I/O. Open-drain output. Connect an external pullup resistor according to SMBus specifications.
SMBus Clock Input. Connect an external pullup resistor according to SMBus specifications.
Logic Circuitry Supply-Voltage Input. Bypass with a 0.1μF capacitor to GND.
AC Detect Output. This open-drain output is high impedance when ACIN is greater than REF/2. The
ACOK output remains low when the MAX8731A is powered down. Connect a 10k Ω pullup resistor from
V CC to ACOK.
Battery Voltage Select Input. Drive BATSEL high to select battery B, or drive BATSEL low to select battery A.
Any change of BATSEL immediately stops charging. Charging begins again in approximately 10ms.
Remote-Sense Input for the Output Voltage of Battery A. Connect a 100 Ω resistor from FBSA to the
battery connector, and a 10nF capacitor from FBSA to PGND.
Remote-Sense Input for the Output Voltage of Battery B. Connect a 100 Ω resistor from FBSB to the
battery connector, and a 10nF capacitor from FBSB to PGND.
Charge Current-Sense Negative Input
Charge Current-Sense Positive Input. Connect a 10m Ω current-sense resistor between CSIP and CSIN.
Power Ground
Low-Side Power MOSFET Driver Output. Connect to low-side n-channel MOSFET. DLO drives
between LDO and PGND.
Linear-Regulator Output. LDO is the output of the 5.4V linear regulator supplied from DCIN. LDO also
directly supplies the DLO driver and the BST charge pump. Bypass with a 1μF ceramic capacitor
from LDO to PGND.
Charger Bias Supply Input. Bypass DCIN with a 0.1μF capacitor to PGND.
High-Side Power MOSFET Driver Source Connection. Connect to the source of the high-side n-channel
MOSFET.
High-Side Power MOSFET Driver Output. Connect to the high-side n-channel MOSFET gate.
High-Side Power MOSFET Driver Power-Supply Connection. Connect a 0.1μF capacitor from BST to LX.
Device Power-Supply Input. Connect to LDO through an RC filter as shown in Figure 1.
Input Current-Sense Negative Input
Input Current-Sense Positive Input. Connect a 10m Ω current-sense resistor between CSSP and CSSN.
Backside Paddle. Connect the backside paddle to analog ground.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8731AEVKIT+ | 功能描述:电源管理IC开发工具 MAX8731A Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX8731AEVSYS | 功能描述:电池管理 Evaluation System for the MAX8731A (includes an EVKit and the Maxim SMBUSMON2 board) RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX8731ETI+ | 制造商:Maxim Integrated Products 功能描述:CHGR MULTI-CHEM 8A 0V TO 19.2V 28TQFN - Rail/Tube |
| MAX8731ETI+T | 制造商:Maxim Integrated Products 功能描述:CHGR MULTI-CHEM 8A 0V TO 19.2V 28TQFN - Tape and Reel |
| MAX8731EVKIT | 功能描述:电池管理 SMBus Level 2 Battery Charger with Remote Sense RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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