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参数资料
| 型号： | MAX8731AETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/32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
ADAPTER
INPUT
R2
R1
150k Ω
100k Ω
D1
R13
100k Ω
CSSP
C1
1 μ F
DCIN
ACIN
CSSN
RS1
10m Ω
SYSTEM
LOAD
R3
49.9k Ω
N
V CC
C12
1 μ F
R12
C IN1
10 μ F
C IN2
10 μ F
MAX8731A
33 Ω
INPUT
LDO
R4
10k Ω
ACOK
LDO
BST
D2
LDO
C11
1 μ F
N1, N2,: SI4800BDY
N3: SI4810BDY
VDD
V DD
C10
KBC
SCL
SDA
R5
10k Ω
R6
10k Ω
C2
0.1 μ F
SCL
SDA
DHI
LX
DLO
PGND
0.1 μ F
N1
R11
1 Ω
C9
220pF
N3
DHI
N2
L1
4.3 μ H
L1: SUMIDA
IINP
CEP125-4R3MC-U
R7
10k Ω
C3
0.1 μ F
CSIP
CSIN
RS2
10m Ω
V OUT
R8
10k Ω
C4
0.01 μ F
C5
0.01 μ F
C6
0.01 μ F
CCV
CCI
CCS
REF
DAC
C7
1 μ F
BATSEL
FBSB
FBSA
GND
BP
C8
0.1 μ F
R10
100 Ω
R9
100 Ω
SELECTOR
BATTERY
A
C OUT1
10 μ F
BATTERY
B
C OUT2
10 μ F
Figure 1. Typical Dual-Battery Application Circuit
Detailed Description
The typical application circuit is shown in Figure 1. The
MAX8731A includes all the functions necessary to
charge Li+, NiMH, and NiCd smart batteries. A high-
efficiency, synchronous-rectified, step-down DC-DC
converter is used to implement a precision constant-
current, constant-voltage charger. The DC-DC convert-
er drives a high-side n-channel MOSFET and provides
synchronous rectification with a low-side n-channel
MOSFET. The charge current and input current-sense
amplifiers have low input-offset error (±64μV typ),
allowing the use of small-valued sense resistors.
The MAX8731A features a voltage-regulation loop
(CCV) and two current-regulation loops (CCI and CCS).
The loops operate independently of each other. The
CCV voltage-regulation loop monitors either FBSA or
FBSB to ensure that its voltage never exceeds the volt-
age set by the ChargeVoltage() command. The CCI
battery current-regulation loop monitors the current
delivered to the selected battery to ensure that it never
exceeds the current limit set by the ChargeCurrent()
14
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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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