Datasheet
MCP73841/2/3/4
DS21823D-page 4 2003-2013 Microchip Technology Inc.
Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)
Precondition Current
Regulation Threshold
V
PCS
51015mVV
DD
– V
SENSE,
T
A
= -5°C to +55°C
Precondition Threshold Voltage V
PTH
MCP73841-4.1,
MCP73843-4.1
2.70 2.80 2.90 V V
BAT
Low-to-High
MCP73841-4.2,
MCP73843-4.2
2.75 2.85 2.95 V V
BAT
Low-to-High
MCP73842-8.2,
MCP73844-8.2
5.40 5.60 5.80 V V
BAT
Low-to-High
MCP73842-8.4,
MCP73844-8.4
5.50 5.70 5.90 V V
BAT
Low-to-High
Charge Termination
Charge Termination Threshold V
TCS
4710mVV
DD
– V
SENSE,
T
A
= -5°C to +55°C
Automatic Recharge
Recharge Threshold Voltage V
RTH
MCP73841,
MCP73843
V
REG
-
300 mV
V
REG
-
200 mV
V
REG
-
100 mV
VV
BAT
High-to-Low
MCP73842,
MCP73844
V
REG
-
600 mV
V
REG
-
400 mV
V
REG
-
200 mV
VV
BAT
High-to-Low
External MOSFET Gate Drive
Gate Drive Current I
DRV
– 2 – mA Sink, CV Mode
– -0.5 – mA Source, CV Mode
Gate Drive Minimum Voltage V
DRVMIN
––1.0VV
DD
= 4.5V
Gate - Source Clamp Voltage V
GS
-7.0 – -4.5 V V
DD
= 12.0V
Thermistor Reference - MCP73841, MCP73842
Thermistor Reference Output
Voltage
V
THREF
2.475 2.55 2.625 V T
A
= +25°C, V
DD
= V
REG
(Typ)+1V,
I
THREF
= 0 mA
Temperature Coefficient TC
THREF
–+50 – ppm/°C
Thermistor Reference Source
Current
I
THREF
200 – – µA
Thermistor Reference Line
Regulation
V
THREF
/
V
THREF
)|/
V
DD
– 0.1 0.25 %/V V
DD
=[V
REG
(Typ)+1V] to 12V
Thermistor Reference Load
Regulation
V
THREF
/
V
THREF
– 0.01 0.10 % I
THREF
= 0 mA to 0.20 mA
Thermistor Comparator - MCP73841, MCP73842
Upper Trip Threshold V
T1
1.18 1.25 1.32 V
Upper Trip Point Hysteresis V
T1HYS
–-50– mV
Lower Trip Threshold V
T2
0.59 0.62 0.66 V
Lower Trip Point Hysteresis V
T2HYS
–80– mV
Input Bias Current |I
BIAS
|––2µA
Status Indicator
Sink Current I
SINK
4712mA
Low Output Voltage V
OL
– 200 400 mV I
SINK
= 1 mA
Input Leakage Current I
LK
–0.011 µAI
SINK
= 0 mA, V
STAT1
= 12V
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all limits apply for V
DD
= [V
REG
(Typ)+0.3V] to 12V, T
A
= -40°C to +85°C.
Typical values are at +25°C, V
DD
= [V
REG
(Typ) + 1V].
Parameters Sym Min Typ Max Units Conditions