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参数资料
| 型号： | MAX8568AETE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/17页 |
| 文件大小： | 0K |
| 描述： | IC BATT MANAGE LITH 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 备份管理 |
| 电池化学： | 锂离子（Li-Ion）；镍金属氢化物（NiMH） |
| 电源电压： | 2.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（3x3） |
| 包装： | 带卷 (TR) |
Complete Backup-Management ICs
for Lithium and NiMH Batteries
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
EP
NAME
IN
BK
PGND
LX
BKSU
LDO
OD1
OD2
NI/LI
BKV
INOK
CHGI
GND
STRTV
TERMV
REF
—
FUNCTION
Main Battery Input. Connect to a 2.8V to 5.5V battery or other power source. Bypass with a 4.7μF
ceramic capacitor to GND.
Backup Battery Input. Connect to an NiMH or rechargeable lithium backup battery. Connect a ceramic
bypass capacitor from BK to GND. See the Step-Up Capacitor Selection section for more details.
Power Ground. Connect PGND to the ground side of the BK input capacitor and BKSU output
capacitor. Use this connection as the star point for all grounds. See the PC Board Layout and Routing
section for specific instructions regarding PGND.
Inductor Connection for Low-I Q Step-Up DC-DC Converter
Step-Up Converter Output. Bypass with a 10μF to 22μF ceramic capacitor to PGND. The BKSU output
voltage is set to either 3.3V or 2.5V without resistors, or to an adjustable voltage with an external
resistor-divider. See the Setting the Step-Up Converter Voltage section.
2.5V (MAX8568A) or 1.8V (MAX8568B), 10mA LDO Output for Memory Supply. LDO is powered from
BKSU. Bypass with a 4.7μF ceramic capacitor to GND.
11 ? Open-Drain Output. OD1 drives the gate of an external pMOS switch.
11 ? Open-Drain Output. OD2 drives the gate of an external pMOS switch.
Selects NiMH or Rechargeable Lithium Backup Battery. Connect NI/LI to BKSU if an NiMH backup
battery is used. Connect NI/LI to GND if a rechargeable lithium backup battery is used.
Sets the BKSU Output Voltage. Connect to GND for 3.3V output at BKSU. Connect to BKSU for 2.5V
output. Connect to the midpoint of a resistor-divider connected from BKSU to GND for adjustable
output. See the Setting the Step-Up Converter Voltage section.
Main Battery Monitor. When V INOK falls below 2.43V, charging stops and backup mode starts. The
step-up converter and LDO turn on, and OD1 and OD2 go high impedance.
Sets Backup Battery Charge Current. Connect a resistor from CHGI to GND to set the charge current.
See the Setting the Charge Current section for details.
Ground. Connect to the exposed paddle. Star all grounds at the BKSU output capacitor ground.
Sets Fast-Charge Start Voltage for NiMH. See the Using an NiMH Backup Battery section.
Sets Fast-Charge Stop Voltage for NiMH, as Well as the Battery Regulation Voltage for Both
Rechargeable Lithium and Maximum Voltage for NiMH. See the Using a Lithium Backup Battery
section and the Using an NiMH Backup Battery section.
Reference Output. Bypass with a 0.22μF ceramic capacitor to GND.
Exposed Paddle. Connect to the analog ground plane. EP also functions as a heatsink. Solder to the
circuit-board analog ground plane.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8568BETE | 功能描述:电池管理 Backup-Mgt IC for Li & NiMH Bat 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 |
| MAX8568BETE-T | 功能描述:电池管理 Backup-Mgt IC for Li & NiMH Bat 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 |
| MAX8569AETT+ | 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP UP 6TDFN EP - Rail/Tube |
| MAX8569AETT+T | 功能描述:直流/直流开关转换器 200mA Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX8569AEUT | 制造商:Maxim Integrated Products 功能描述:200MA STEP-UP DC-DC CONVERTERS IN 6 - Rail/Tube |
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