Datasheet

© 2007-2011 Microchip Technology Inc. DS22071B-page 7
MCP73837/8
AC CHARACTERISTICS
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits apply for V
DD
= [V
REG
(typical) + 0.3V] to 6V.
Typical values are at +25°C, V
DD
= [V
REG
(typical) + 1.0V]
Parameters Sym Min Typ Max Units Conditions
UVLO Start Delay t
START
—— 5 msV
DD
Low to High
Current Regulation
Transition Time Out of Precondition t
DELAY
——10 msV
BAT
< V
PTH
to V
BAT
> V
PTH
Current Rise Time Out of Precondition t
RISE
——10 msI
OUT
Rising to 90% of I
REG
Precondition Comparator Filter Time t
PRECON
0.4 1.3 3.2 ms Average V
BAT
Rise/Fall
Termination Comparator Filter Time t
TERM
0.4 1.3 3.2 ms Average I
OUT
Falling
Charge
Comparator Filter Time t
CHARGE
0.4 1.3 3.2 ms Average V
BAT
Falling
Thermistor Comparator Filter Time t
THERM
0.4 1.3 3.2 ms Average THERM Rise/Fall
Elapsed Timer
Elapsed Timer Period t
ELAPSED
0 0 0 Hours Timer Disabled
3.6 4.0 4.4 Hours
5.4 6.0 6.6 Hours
7.2 8.0 8.8 Hours
Status Indicators
Status Output Turn-off t
OFF
— — 500 µs I
SINK
= 1mA to 0mA
Status Output Turn-on t
ON
— — 500 µs I
SINK
= 0mA to 1mA
Electrical Specifications: Unless otherwise indicated, all limits apply for V
DD
= [V
REG
(typ.) + 0.3V] to 6V.
Typical values are at +25°C, V
DD
= [V
REG
(typ.) + 1.0V]
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range T
A
-40 — +85 °C
Operating Temperature Range T
J
-40 — +125 °C
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances
Thermal Resistance, 10-Lead MSOP θ
JA
— 113 — °C/W 4-Layer JC51-7 Standard Board,
Natural Convection. Note 1
Thermal Resistance, 10-Lead 3 mm x
3mm DFN
θ
JA
— 41 — °C/W 4-Layer JC51-7 Standard Board,
Natural Convection
Note 1: This represents the minimum copper condition on the PCB (Printed Circuit Board).