Datasheet

MCP73837/8
DS22071B-page 4 © 2007-2011 Microchip Technology Inc.
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 kW in Series with 100 pF) ......≥ 4kV
Machine Model (200 pF, No Series Resistance) .............300V
† 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
(typical) + 0.3V] to 6V,
T
A
= -40°C to +85°C. Typical values are at +25°C, V
DD
= [V
REG
(typical) + 1.0V]
Parameters Sym Min Typ Max Units Conditions
Supply Input
Supply Voltage V
DD
V
REG
(Typ)
+0.3V
—6VNote 1
Supply Current I
SS
— 1900 3000 µA Charging
110 300 µA Charge Complete, No Battery
— 75 100 µA Standby (PROG Floating)
— 0.6 5 µA Shutdown (V
DD
< V
BAT
-
100 mV or V
DD
< V
STOP
)
UVLO Start Threshold V
START
3.35 3.45 3.55 V V
DD
= Low to High (USB-port)
UVLO Stop Threshold V
STOP
3.25 3.35 3.45 V V
DD
= High to Low (USB-port)
UVLO Hysteresis V
HYS
— 75 — mV (USB-port)
UVLO Start Threshold V
START
4.1 4.15 4.3 V (AC-adapter)
UVLO Stop Threshold V
STOP
4.0 4.1 4.2 V (AC-adapter)
UVLO Hysteresis V
HYS
— 55 — mV (AC-adapter)
Voltage Regulation (Constant Voltage Mode)
Regulated Charge Voltage V
REG
4.179 4.20 4.221 V V
DD
=[V
REG
(typical)+1V]
4.328 4.35 4.372 V I
OUT
=30 mA
4.378 4.40 4.422 V T
A
=-5°C to +55°C
4.477 4.50 4.523 V
Regulated Charge Voltage Tolerance V
RTOL
-0.5 — +0.5 % T
A
=-5°C to +55°C
Line Regulation |(ΔV
BAT
/
V
BAT
)/ΔV
DD
|
— 0.075 0.2 %/V V
DD
=[V
REG
(typical)+1V] to 6V
I
OUT
=30 mA
Load Regulation |ΔV
BAT
/V
BAT
| — 0.150 0.3 % I
OUT
=10 mA to 100 mA
V
DD
=[V
REG
(typical)+1V]
Supply Ripple Attenuation PSRR — 60 — dB I
OUT
=10 mA, 10Hz to 1 kHz
—52—dBI
OUT
=10 mA, 10Hz to 10 kHz
—23—dBI
OUT
=10 mA, 10Hz to 1 MHz
Current Regulation (Fast Charge Constant-Current Mode)
AC-adapter Fast Charge Current I
REG
95 105 115 mA PROG1 = 10 kΩ
900 1000 1100 mA PROG1 = 1 kΩ, Note 2
T
A
=-5°C to +55°C
Note 1: The supply voltage (V
DD
) = V
AC
when input power source is from AC-adapter and the supply voltage (V
DD
) = V
USB
when input power source is from USB-port.
2: The value is guaranteed by design and not production tested.
3: The current is based on the ratio of selected current regulation (I
REG
).
4: The maximum charge impedance has to be less than shutdown impedance for normal operation.