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LTC1430AIGN 数据表(PDF) 4 Page - Linear Technology

部件名 LTC1430AIGN
功能描述  High Power Step-Down Switching Regulator Controller
PDF  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1430AIGN 数据表(HTML) 4 Page - Linear Technology

  LTC1430AIGN Datasheet HTML 1Page - Linear Technology LTC1430AIGN Datasheet HTML 2Page - Linear Technology LTC1430AIGN Datasheet HTML 3Page - Linear Technology LTC1430AIGN Datasheet HTML 4Page - Linear Technology LTC1430AIGN Datasheet HTML 5Page - Linear Technology LTC1430AIGN Datasheet HTML 6Page - Linear Technology LTC1430AIGN Datasheet HTML 7Page - Linear Technology LTC1430AIGN Datasheet HTML 8Page - Linear Technology LTC1430AIGN Datasheet HTML 9Page - Linear Technology Next Button
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4
LTC1430A
TEMPERATURE (
°C)
–40
12.5
13.0
14.0
20
60
1430 G01
12.0
11.5
–20
0
40
80
100
11.0
10.5
13.5
VCC = 5V
TEMPERATURE (
°C)
–40
70
75
85
90
95
0
40
60
1430 G03
80
–20
20
80
100
100
VCOMP = VCC
VFB = 1.265V
TEMPERATURE (
°C)
–40
210
220
240
20
60
1430 G02
200
190
–20
0
40
80
100
180
170
230
VCC = 5V
FREQSET FLOATING
Maximum Duty Cycle
vs Temperature
Oscillator Frequency
vs Temperature
Error Amplifier Transconductance
vs Temperature
TEMPERATURE (
°C)
–40
350
400
500
550
600
850
700
0
40
60
100
1430 G04
450
750
800
650
–20
20
80
gm =
∆ICOMP
∆VFB
∆VFB vs Temperature
TEMPERATURE (
°C)
–40
6
8
20
1430 G05
0
–6
–4
–20
0
40
–8
–10
10
4
2
–2
60
80
100
VCC = 5V
Load Regulation
LOAD CURRENT (A)
0
–1.0
– 0.8
– 0.4
– 0.2
0
0.4
1
5
7
1460 G06
– 0.6
0.2
4
9
10
2
3
68
TA = 25°C
VOUT = 3.3V
VCC = 5V
FIGURE 4
Supply Current
vs Oscillator Frequency
OSCILLATOR FREQUENCY (kHz)
1
10
100
1000
0
200
300
400
0.1
100
500
1430 G08
IPVCC (LOADED
WITH 10,000pF,
PVCC = 12V)
IPVCC (NO LOAD,
PVCC = 5V)
IPVCC (NO LOAD,
PVCC = 12V)
IVCC
TA = 25°C
VCC = 5V
FIGURE 4
Output Voltage vs Load Current
with Current Limit
LOAD CURRENT (A)
0
1.5
2.0
2.5
6
10
1430 G07
1.0
0.5
0
24
8
3.0
3.5
4.0
12
TA = 25°C
VCC = 5V
FIGURE 4
RI(MAX) = 10k
RI(MAX) = 16k
TYPICAL PERFOR A CE CHARACTERISTICS
IMAX Pin Sink Current
vs Temperature



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