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MCP73838TNVIMF bảng dữ liệu(PDF) 5 Page - Microchip Technology

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Giải thích chi tiết về linh kiện  Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

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© 2007 Microchip Technology Inc.
DS22071A-page 5
MCP73837/8
USB-Port Fast Charge Current
IREG
80
90
100
mA
PROG2 = Low
400
450
500
mA
PROG2 = High
TA=-5°C to +55°C
Maximum Output Current Limit
IMAX
1200
mA
PROG1 < 833
Ω
Precondition Current Regulation (Trickle Charge Constant-Current Mode)
Precondition Current Ratio
IPREG / IREG
7.5
10
12.5
%
Note 3
15
20
25
%
TA=-5°C to +55°C
30
40
50
%
100
%
Precondition Current Threshold Ratio
VPTH / VREG
64
66.5
69
%
VBAT Low to High
69
71.5
74
%
Precondition Hysteresis
VPHYS
120
mV
VBAT High to Low
Charge Termination
Charge Termination Current Ratio
ITERM / IREG
3.75
5
6.25
%
PROG1 = 1 k
Ω to 10 kΩ
5.6
7.5
9.4
%
TA=-5°C to +55°C
7.5
10
12.5
%
Note 3
15
20
25
%
Automatic Recharge
Recharge Voltage Threshold Ratio
VRTH / VREG
92
94.0
96
%
VBAT High to Low
95
97
99
%
TA=-5°C to +55°C
Pass Transistor ON-Resistance
ON-Resistance
RDSON
350
m
Ω
VDD = 4.5V, TJ = 105°C
Battery Discharge Current
Output Reverse Leakage Current
IDISCHARGE
0.1
2
µA
Standby (PROG1 or PROG2
Floating)
0.55
2
µA
Shutdown (VDD < VBAT -
100 mV or VDD < VSTOP)
-6
-15
µA
Charge Complete
Status Indicators - STAT1, STAT2, PG (MCP73837)
Sink Current
ISINK
—16
35
mA
Low Output Voltage
VOL
—0.3
1
V
ISINK = 4 mA
Input Leakage Current
ILK
0.03
1
µA
High Impedance, VDD on pin
PROG1 Input (PROG1)
Charge Impedance Range
RPROG
1—
k
Ω
Note 4
Shutdown Impedance
RPROG
70
200
k
Ω
Minimum Impedance for
Shutdown
PROG2 Inputs (PROG2)
Input High Voltage Level
VIH
0.8VDD
——
%
Input Low Voltage Level
VIL
0.2VDD
%
Shutdown Voltage Level
VSD
0.2VDD
—0.8VDD
%
Input Leakage Current
ILK
—7
15
µA
VPROG2 = VDD
DC CHARACTERISTICS (Continued)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(typical) + 0.3V] to 6V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (typical) + 1.0V]
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note 1:
The supply voltage (VDD) = VAC when input power source is from Ac-Adapter and the supply voltage (VDD) = VUSB
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 (IREG).
4:
The maximum charge impedance has to be less than shutdown impedance for normal operation.


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