Microchip Technology MCP73X23EV-LFP 数据表

 2009-2013 Microchip Technology Inc.

DS22191E-page  1

• Complete Linear Charge Management Controller:

- Integrated Input Overvoltage Protection (OVP)

- 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:

- Available Options: 95% or Disable

• Factory Preset Charge Status Output:

- On/Off or Flashing

• Soft  Start

• Temperature Range: -40°C to +85°C

• Packaging: DFN-10 (3 mm x 3 mm)

• Low-Cost LiFePO

4

 Battery Chargers

• Power Tools
• Toys
• Backup Energy Storage Solutions

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
the 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.

3x3 DFN *

V

BAT

V

DD

V

BAT

V

SS

V

SS

1

2

3

4

10

9

8

7 STAT

PROG

V

DD

* Includes Exposed Thermal Pad (EP); see 

.

EP

11

NC 5

6 NC