Data Sheet

© 2005 Microchip Technology Inc. DS21984A-page 3
MCP73831
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
V
DDN
.................................................................................7.0V
All Inputs and Outputs w.r.t. V
SS
............... -0.3 to (V
DD
+0.3)V
Maximum Junction Temperature, T
J
............Internally Limited
Storage temperature .....................................-65°C to +150°C
ESD protection on all pins:
Human Body Model (1.5 kΩ in Series with 100 pF).......≥ 4kV
Machine Model (200 pF, No Series Resistance).............400V
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for V
DD
= [V
REG
(typ.) + 0.3V] to 6V, T
A
= -40°C to +85°C.
Typical values are at +25°C, V
DD
= [V
REG
(typ.) + 1.0V]
Parameters Sym. Min. Typ. Max. Units Conditions
Supply Input
Supply Voltage V
DD
3.75 — 6 V
Supply Current I
SS
— 510 1500 μA Charging
— 53 200 μA Charge Complete,
No Battery
—2550μA PROG Floating
—1 5μAV
DD
< (V
BAT
- 50 mV)
—0.1 2μAV
DD
< V
STOP
UVLO Start Threshold V
START
3.3 3.45 3.6 V V
DD
Low-to-High
UVLO Stop Threshold V
STOP
3.2 3.38 3.5 V V
DD
High-to-Low
UVLO Hysteresis V
HYS
—70—mV
Voltage Regulation (Constant-Voltage Mode)
Regulated Output Voltage V
REG
4.168 4.20 4.232 V MCP73831-2
4.317 4.35 4.383 V MCP73831-3
4.367 4.40 4.433 V MCP73831-4
4.466 4.50 4.534 V MCP73831-5
V
DD
= [V
REG
(Typ)+1V]
I
OUT
= 10 mA
T
A
= -5°C to +55°C
Line Regulation |(ΔV
BAT
/V
BAT
)/
ΔV
DD
|
— 0.09 0.30 %/V V
DD
= [V
REG
(Typ)+1V] to 6V
I
OUT
= 10 mA
Load Regulation |ΔV
BAT
/V
BAT
| — 0.05 0.30 % I
OUT
= 10 mA to 50 mA
V
DD
= [V
REG
(Typ)+1V]
Supply Ripple Attenuation PSRR — 52 —- dB I
OUT
=10mA, 10Hz to 1kHz
—47—dBI
OUT
=10 mA, 10Hz to 10 kHz
—22—dBI
OUT
=10mA, 10Hz to 1MHz
Current Regulation (Fast Charge Constant-Current Mode)
Fast Charge Current
Regulation
I
REG
90 100 110 mA PROG = 10 kΩ
450 505 550 mA PROG = 2.0 kΩ, Note 1
T
A
= -5°C to +55°C
Note 1: Not production tested. Ensured by design.