參數(shù)資料
型號： LTC4055EUF#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： USB Power Controller and Li-Ion Linear Charger; Package: QFN; No of Pins: 16; Temperature Range: -40°C to +125°C
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16
封裝： 4 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WGGC, QFN-16
文件頁數(shù)： 18/24頁
文件大?。?/td> 292K
代理商： LTC4055EUF#PBF
LTC4055/LTC4055-1
3
4055fb
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN1 = VIN2 = 5V, VBAT = 3.5V, HPWR = 5V, WALL = 0V,
RPROG = RCLPROG = 100k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Current Limit
ILIM
Current Limit
RCLPROG = 100k, HPWR = 5V
RCLPROG = 100k, HPWR = 0V
l
465
89
490
97
515
105
mA
RON
ON Resistance VIN to VOUT
HPWR = 5V, 400mA Load
HPWR = 0V, 80mA Load
0.2
Ω
VPROG
Programming Pin Voltage
(PROG, CLPROG)
RCLPROG = RPROG = 100k
RCLPROG = RPROG = 50k
l
0.98
1.000
1.02
V
ISS
Soft-Start Inrush Current
IN or OUT
5
mA/μs
VCLEN
Input Current Limit Enable Threshold
VIN Rising
l
3.5
3.8
4
V
ΔVCLEN
Input Current Limit Enable Threshold
VIN Rising – VIN Falling
125
mV
VALEN
Automatic Limit Enable Threshold
Voltage
(VIN – VOUT) VIN Rising
(VIN – VOUT) VIN Falling
25
–75
50
–50
75
–25
mV
Battery Charger
VFLOAT
Regulated BAT Voltage
(0°C to 85°C) IBAT = 2mA (LTC4055)
IBAT = 2mA (LTC4055)
l
4.165
4.158
4.200
4.235
4.242
V
(0°C to 85°C). IBAT = 2mA (LTC4055-1)
IBAT = 2mA (LTC4055-1)
l
4.066
4.059
4.100
4.134
4.141
V
IBAT
Current Mode Charge Current
RPROG = 100k, HPWR = 5V, No Load
RPROG = 100k, HPWR = 0V, No Load
RPROG = 100k, VOUT = 5V, VIN = 0V,
VWALL = 2V
RPROG = 50k, HPWR = 5V, No Load
RPROG = 50k, VOUT = 5V, VIN = 0V,
VWALL = 2V
l
445
45
445
900
485
80
485
980
525
110
525
1060
mA
IBAT(MAX)
Maximum Charge Current
(Note 8)
1
A
ΔIB/ΔIO
Charge Current Load Dependency
ΔIBAT/ΔIOUT, IOUT = 100mA
l
0.95
1
1.05
mA/mA
ITRKL
Trickle-Charge Current
VBAT = 2V, RPROG = 100k
30
45
60
mA
VTRKL
Trickle-Charge Threshold Voltage
VBAT Rising
l
2.7
2.85
3
V
VCENI
Input Charger Enable Threshold
Voltage
(VIN – VBAT) High to Low
(VIN – VBAT) Low to High
70
80
mV
VCENO
Output Charger Enable Threshold
Voltage
(VOUT – VBAT) High to Low
(VOUT – VBAT) Low to High
70
80
mV
VUVCL
Input/Output Undervoltage Current Limit IBAT = ICHG/2
l
4.23
4.3
4.37
V
VRECHRG
Recharge Battery Threshold Voltage
VFLOAT – VRECHRG
l
65
100
135
mV
tTIMER
TIMER Accuracy
CTIMER = 0.1μF
±10
%
Recharge Time
Percent of Total Charge Time
50
%
Low Battery Trickle-Charge Time
Percent of Total Charge Time, VBAT < 2.8V
25
%
TLIM
Junction Temperature in Constant
Temperature Mode
105
°C
Ideal Diode
RFWD
On Resistance, VON Regulation
VBAT = 3.5V, 100mA Load
0.1
Ω
RDIO,ON
On Resistance VBAT to VOUT
VBAT = 3.5V, 600mA Load
0.2
Ω
VFWD
Voltage Forward Drop (VBAT – VOUT)VBAT = 3.5V, 5mA Load
VBAT = 3.5V, 100mA Load
VBAT = 3.5V, 600mA
l
10
30
55
120
50
mV
VOFF
Diode Disable Battery Voltage
VBAT Falling
2.8
V
IFWD
Load Current Limit for VON Regulation
VIN = 3.5V
550
mA
IMAX
Diode Current Limit
VBAT = 3.5V, VOUT = 2.8V, Pulsed with
10% Duty Cycle
1.4
1.8
2.2
A
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