參數(shù)資料
型號(hào)： LTC4012IUF#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 633 kHz SWITCHING FREQ-MAX, PQCC20
封裝： 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-220WGGD-1, QFN-20
文件頁(yè)數(shù)： 25/28頁(yè)
文件大?。?/td> 381K
代理商： LTC4012IUF#TRPBF
LTC4012/
LTC4012-1/LTC4012-2
4012fa
Battery Load Dump
BA
TTER
YVOL
TAGE
(500mV
/DIV)
LOAD
STATE
TIME (1ms/DIV)
CLP = 20V
VOUT = 12.3V
4012 G06
DISCONNECT
RECONNECT
3A
2A
12.1V
1A
typical perForMance characteristics
Efficiency at DCIN = 20V, BAT = 8V
VFB Line Regulation
CHARGE CURRENT (A)
0
80
EFFICIENCY
(%)
POWER
LOSS(mW)
85
90
100
1000
10000
0.5
1
1.5
2
4012 G01
2.5
3
95
POWER LOSS
EFFICIENCY
RSENSE = 33m
RIN = 3.01k
Efficiency at DCIN = 20V, BAT = 12V
CHARGE CURRENT (A)
0
80
EFFICIENCY
(%)
POWER
LOSS(mW)
85
90
100
1000
10000
0.5
1
1.5
2
4012 G02
2.5
3
95
EFFICIENCY
POWER LOSS
RSENSE = 33m
RIN = 3.01k
Efficiency at DCIN = 20V, BAT = 16V
CHARGE CURRENT (A)
0
80
EFFICIENCY
(%)
POWER
LOSS(mW)
85
90
100
1000
10000
0.5
1
1.5
2
4012 G03
2.5
3
95
EFFICIENCY
POWER LOSS
RSENSE = 33m
RIN = 3.01k
CLP PIN VOLTAGE (V)
5
V FB
ERROR
(%)
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
R
ON
()
100
150
175
200
10
20
25
300
4012 G05
125
5
15
225
250
275
CLP = BAT + 3V
(CLP ≥ 6V)
FBDIV Pin RON vs Battery Voltage
(TA = 25°C unless otherwise noted. L = IHLP-2525 6.8H)
Charge Current Accuracy
BATTERY VOLTAGE (V)
0
–6
CHARGE
CURRENT
ERROR
(%)
–4
–3
–2
10
8
20
24
22
2
4012 G07
–5
6
4
2
14
12
16 18
–1
0
1
DCIN = 12V
RPROG = 26.7k
DCIN = 24V
RPROG = 35.7k
RSENSE = 33m
RIN = 3.01k
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PDF描述
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參數(shù)描述
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