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参数资料
| 型号： | MAX8730ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/29页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER BATTERY 28-TQFN |
| 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 ~ 28 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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Low-Cost Battery Charger
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
NAME
ASNS
LDO
SWREF
REF
CLS
ACIN
VCTL
RELTH
ACOK
MODE
IINP
ICTL
REFON
INPON
CCI
CCV
CCS
GND
BATT
CSIN
CSIP
DHIV
DHI
SRC
CSSN
CSSP
PDS
PDL
Backside
Paddle
FUNCTION
Adapter Voltage Sense. When V ASNS > V BATT - 280mV, the battery switch is turned off and the adapter switch
is turned on. Connect to the adapter input using an RC filter as shown in Figure 1.
Linear-Regulator Output. LDO is the output of the 5.35V linear regulator supplied from SRC. Bypass LDO with
a 1μF ceramic capacitor from LDO to GND.
3.3V Switched Reference. SWREF is a 1% accurate linear regulator that can deliver 20mA. SWREF remains
active when the adapter is absent and may be disabled by setting REFON to zero. Bypass SWREF with a 1μF
capacitor to GND.
4.2V Voltage Reference. Bypass REF with a 1μF capacitor to GND.
Source Current-Limit Input. Voltage input for setting the current limit of the input source.
AC-Adapter-Detect Input. ACIN is the input to an uncommitted comparator. ACIN does not influence adapter
and battery selection.
Charge-Voltage-Control Input. Connect VCTL to LDO for default 4.2V/cell.
Relearn Threshold for Relearn Mode. In relearn mode, when V BATT < 5 x V RELTH , the MAX8730 drives PDS
low and drives PDL high to terminate relearning of a discharged battery. See the Relearn Mode section for
more details.
AC Detect Output. This open-drain output pulls low when ACIN is greater than REF/2 and ASNS is greater
than BATT - 100mV. The ACOK output is high impedance when the MAX8730 is powered down. Connect a
10k ? pullup resistor from LDO to ACOK .
Tri-Level Input for Setting Number of Cells or Asserting the Conditioning Mode:
MODE = GND; asserts relearn mode.
MODE = Float; charge with 3 times the cell voltage programmed at VCTL.
MODE = LDO; charge with 4 times the cell voltage programmed at VCTL.
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 2.8μA/mV (typ).
Charge-Current-Control Input. Pull ICTL to GND to shut down the charger.
SWREF Enable. Drive REFON high to enable SWREF.
Input Current-Monitor Enable. Drive INPON high to enable IINP.
Output Current-Regulation Loop Compensation Point. Connect a 0.01μF capacitor from CCS to GND.
Voltage-Regulation Loop Compensation Point. Connect a 10k ? resistor in series with a 0.01μF capacitor to GND.
Input Current-Regulation Loop Compensation Point. Connect a 0.01μF capacitor from CCS to GND.
Analog Ground
Battery-Voltage Feedback Input
Charge-Current-Sense Negative Input
Charge-Current-Sense Positive Input. Connect a current-sense resistor from CSIP to CSIN.
High-Side Driver Supply. Connect a 0.1μF capacitor from DHIV to CSSN.
High-Side Power MOSFET Driver Output. Connect to high-side, p-channel MOSFET gate.
DC Supply Input Voltage and Connection for Driver for PDS/PDL Switches. Bypass SRC to power ground with
a 1μF capacitor.
Input Current Sense for Negative Input
Input Current Sense for Positive Input. Connect a 15m ? current-sense resistor from CSSP to CSSN.
Power-Source PMOS Switch Driver Output. When the adapter is absent, the PDS output is pulled to SRC
through an internal 1M ? resistor.
System-Load PMOS Switch Driver Output. When the adapter is absent, the PDL output is pulled to ground
through an internal 100k ? resistor.
Backside Paddle. Connect the backside paddle to analog ground.
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8730EVKIT | 制造商:Maxim Integrated Products 功能描述:LOW COST BATTERY CHARGER - Rail/Tube |
| MAX8731AETI+ | 功能描述:电池管理 SMBus Level 2 Battery Charger 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 |
| MAX8731AETI+T | 功能描述:电池管理 SMBus Level 2 Battery Charger 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 |
| 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 |
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