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LTC4101 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4101
Description  Smart Battery Charger Controller
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4101 Datasheet(HTML) 6 Page - Linear Technology

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LTC4101
6
4101f
TYPICAL PERFOR A CE CHARACTERISTICS
INFET Response Time to
Reverse Current
Output Voltage vs Output Current
PWM Frequency vs Duty Cycle
Disconnect/Reconnect Battery
(Load Dump)
Battery Leakage Current vs
Battery Voltage
DUTY CYCLE (VOUT/VIN)
0
0.1 0.2
0.4
0.6
0.9
0.8
0.3
0.5
0.7
1.0
4101 G03
PROGRAMMED CURRENT = 10%
DCIN = 9V
DCIN = 12V
DCIN = 24V
350
300
250
200
150
100
50
0
OUTPUT CURRENT (A)
0
0.5 1.0
2.0
3.0
4.0
1.5
2.5
3.5
4.5
4101 G02
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
VDCIN = 20V
VPROG = 4.176V
IPROG = 4V
BATTERY VOLTAGE (V)
0
5
10
15
20
25
30
4101 G05
40
35
30
25
20
15
10
5
0
VDCIN = 0V
Efficiency at VPROG = 4.208V
IOUT (A)
0.5
0.0
1.5
1.0
2.0
2.5
3.5
3.0
4101 G07
VIN = 20V
VIN = 8V
100
96
92
88
84
80
76
72
SMBus Accelerator Operation
1
µs/DIV
4101 G09
5V
0V
RPULLUP = 15k
LTC4101
VDD = 5V
CBUS = 200pF
Low Current Operation
IPROG (A)
0
0.6
0.4
0.5
0.3
0.2
0.1
0
0.05
4101 G10
0.10
0.40
0.15 0.20 0.25 0.30 0.35
VDD = 5V
VBAT = 4V
VDCIN = 20V
VPROG = 4.208V
PROGRAMMED
CURRENT
NO LOW
CURRENT
MODE
LOW
CURRENT
MODE
TEST PERFORMED ON DEMOBOARD
VIN = 15VDC
CHARGER = ON
ICHARGE = <10mA
Vs OF PFET (5V/DIV)
Id (REVERSE) OF
PFET (5A/DIV)
Vgs OF PFET (2V/DIV)
4101 G01
VCHARGE = 4.2V
INFET = 1/2 Si4925DY
Vgs = 0
Vs = 0V
Id = 0A
1.25
µs/DIV
4101 G04
LOAD CURRENT = 1A, 2A, 3A
DCIN = 12V
VFLOAT = 4.2V
VFLOAT
1V/(DIV)
LOAD
STATE
DISCONNECT
RECONNECT
1A STEP
3A STEP
3A STEP
1A STEP
TA = 25°C unless otherwise noted.



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