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| 型号： | MCP73X23EV-LFP |
| 厂商： | Microchip Technology |
| 文件页数： | 1/34页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL BATT CHARGER MCP73X23 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电池充电器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MCP73123，MCP73223 |
| 主要属性： | 1 芯或 2 芯 LiFePO4（磷酸铁锂），500mA 时为 3.6V 和 7.2V |
| 次要属性： | 安全计时器，热保护，自动终止充电和再充电 |
| 已供物品： | 板 |
| 产品目录页面： | 669 (CN2011-ZH PDF) |
| 相关产品： | MCP73223T-C2SI/MF-ND - IC LI IRON PHOSPHATE CTRLR 10DFN MCP73123T-22SI/MF-ND - IC LI IRON PHOSPHATE CTRLR 10DFN MCP73223-C2SI/MF-ND - IC LI IRON PHOSPHATE CTRLR 10DFN MCP73123-22SI/MF-ND - IC LI IRON PHOSPHATE CTRLR 10DFN |
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MCP73123/223
Lithium Iron Phosphate (LiFePO 4 ) Battery Charge
Management Controller with Input Overvoltage Protection
Features
? Complete Linear Charge Management Controller:
- Integrated Input Overvoltage Protection
- Integrated Pass Transistor
- Integrated Current Sense
- Integrated Reverse Discharge Protection
? Constant Current/Constant Voltage Operation
with Thermal Regulation
? 4.15V Undervoltage Lockout (UVLO)
? 18V Absolute Maximum Input with OVP:
- 6.5V - MCP73123
- 13V - MCP73223
? High Accuracy Preset Voltage Regulation
Through Full Temperature Range (-5°C to +55°C):
- +0.5% - MCP73123
- +0.6% - MCP73223
? Battery Charge Voltage Options:
- 3.6V - MCP73123
- 7.2V - MCP73223
? Resistor Programmable Fast Charge Current:
- 130 mA - 1100 mA
? Preconditioning of Deeply Depleted Cells:
- Available Options: 10% or Disable
? Integrated Precondition Timer:
- 32 Minutes or Disable
? Automatic End-of-Charge Control:
- Selectable Minimum Current Ratio:
5%, 7.5%, 10% or 20%
- Elapse Safety Timer: 4 HR, 6 HR, 8 HR or
Disable
? Automatic Recharge:
Description
The MCP73123/223 is a highly integrated Lithium Iron
Phosphate (LiFePO 4 ) battery charge management
controller for use in space-limited and cost-sensitive
applications. The MCP73123/223 provides specific
charge algorithms for LiFePO 4 batteries to achieve
optimal capacity and safety in the shortest charging
time possible. Along with its small physical size, the low
number of external components makes the
MCP73123/223 ideally suitable for various
applications. The absolute maximum voltage, up to
18V, allows the use of MCP73123/223 in harsh
environments, such as low cost AC adapter or voltage
spikes from plugging/unplugging.
The MCP73123/223 employs a constant current/
constant voltage charge algorithm. The 3.6V per cell
factory preset reference voltage simplifies design with
2V preconditioning threshold. The fast charge,
constant current value is set with one external resistor
from 130 mA to 1100 mA. The MCP73123/223 also
limits the charge current based on die temperature
during high power or high ambient conditions. This
thermal regulation optimizes the charge cycle time
while maintaining device reliability.
The PROG pin of the MCP73123/223 also serves as
enable pin. When high impedance is applied, the
MCP73123/223 will be in Standby mode.
The MCP73123/223 is fully specified over the ambient
temperature range of -40°C to +85°C. The MCP73123/
223 is available in a 10 lead DFN package.
Package Types (Top View)
MCP73123/223
3x3 DFN *
- Available Options: 95% or Disable
? Factory Preset Charge Status Output:
V DD 1
10 PROG
- On/Off or Flashing
? Soft Start
? Temperature Range: -40°C to +85°C
? Packaging: DFN-10 (3 mm x 3 mm)
V DD 2
V BAT 3
V BAT 4
NC 5
EP
11
9 V SS
8 V SS
7 STAT
6 NC
Applications
?
?
?
?
Low-Cost LiFePO 4 Battery Chargers
Power Tools
Toys
Backup Energy Storage Solutions
? 2009-2011 Microchip Technology Inc.
DS22191D-page 1
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