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LTC4012CUF-1PBF Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4012CUF-1PBF
Description  High Effi ciency, Multi-Chemistry Battery Charger with PowerPath Control
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4012CUF-1PBF Datasheet(HTML) 6 Page - Linear Technology

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LTC4012/
LTC4012-1/LTC4012-2
6
4012f
Battery Load Dump
LOAD
STATE
TIME (1ms/DIV)
CLP = 20V
VOUT = 12.3V
4012 G06
DISCONNECT
RECONNECT
3A
2A
12.1V
1A
1A
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency at DCIN = 20V, BAT = 8V
VFB Line Regulation
CHARGE CURRENT (A)
0
80
85
90
100
100
1000
10000
0.5
1
1.5
2
4012 G01
2.5
3
95
POWER LOSS
EFFICIENCY
RSENSE = 33mΩ
RIN = 3.01k
Efficiency at DCIN = 20V, BAT = 12V
CHARGE CURRENT (A)
0
80
85
90
100
100
1000
10000
0.5
1
1.5
2
4012 G02
2.5
3
95
EFFICIENCY
POWER LOSS
RSENSE = 33mΩ
RIN = 3.01k
Efficiency at DCIN = 20V, BAT = 16V
CHARGE CURRENT (A)
0
80
85
90
100
100
1000
10000
0.5
1
1.5
2
4012 G03
2.5
3
95
EFFICIENCY
POWER LOSS
RSENSE = 33mΩ
RIN = 3.01k
CLP PIN VOLTAGE (V)
5
0.02
0.06
0.10
25
4012 G04
–0.02
–0.06
0
0.04
0.08
–0.04
–0.08
–0.10
10
15
20
30
LTC4012 TEST CIRCUIT
BATTERY VOLTAGE (V)
0
75
100
150
175
200
10
20
25
300
4012 G05
125
515
225
250
275
CLP = BAT + 3V
(CLP ≥ 6V)
FBDIV Pin RON vs Battery Voltage
(TA = 25°C unless otherwise noted. L = IHLP-2525 6.8μH)
Charge Current Accuracy
BATTERY VOLTAGE (V)
0
–6
–4
–3
–2
10
8
20
24
22
2
4012 G07
–5
6
4
214
12
16 18
–1
0
1
DCIN = 12V
RPROG = 26.7k
DCIN = 24V
RPROG = 35.7k
RSENSE = 33mΩ
RIN = 3.01k


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