參數(shù)資料
型號: LT4180IGN#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO24
封裝: 0.150 INCH, LEAD FREE, PLASTIC, SSOP-24
文件頁數(shù): 13/18頁
文件大?。?/td> 278K
代理商: LT4180IGN#PBF
LT4180
4
4180fa
TYPICAL PERFORMANCE CHARACTERISTICS
IDRAIN vs VDRAIN
Normal Timing
Spread Spectrum Timing
VLOAD vs VWIRE
Load Step in
12V Linear Application
Load Step in Buck Application
VREF vs Temperature
INTVCC vs Temperature
Oscillator Frequency
vs Temperature
VWIRING (V)
0
V
LOAD
(V)
4.97
4.98
4.99
4.96
4.95
0.5
1.5
1
2
2.5
3
4.92
4.91
4.94
5.00
4.93
4180 G07
5ms/DIV
500mA
200mA
200mA TO 500mA LOAD TRANSIENT
100μF LOAD CAP
VSENSE
2V/DIV
VLOAD
2V/DIV
ILOAD
200mA/DIV
4180 G08
RWIRE = 8Ω
5μs/DIV
TRIGGERED ON CHOLD1
500mV/DIV
CHOLD1
WITH 15k
PULL-DOWN
2V/DIV
OSC
4180 G05
1μs/DIV
TRIGGERED ON OSC
500mV/DIV
CHOLD1
WITH 15k
PULL-DOWN
2V/DIV
OSC
4180 G06
10ms/DIV
VSENSE
2V/DIV
VLOAD
2V/DIV
4180 G09
ILOAD
500mA/DIV
500mA
1.5A
RWIRE = 2.5Ω
500mA TO 1.5A LOAD TRANSIENT
470μF LOAD CAP
TEMPERATURE (°C)
–55
V
REF
(V)
1.2205
1.2210
1.2215
105
1.2200
1.2195
1.2190
–35 –15
5
25
45
65
85
125
4108 G01
TEMPERATURE (°C)
–55
INT
V
CC
(V)
3.150
3.160
3.155
3.165
105
3.145
3.140
3.135
–35 –15
5
25
45
65
85
125
4108 G02
TEMPERATURE (°C)
–55
FREQUENCY
(kHz)
203.0
203.5
204.0
105
202.5
202.0
201.5
–35 –15
5
25
45
65
85
125
4108 G03
ROSC = 20k
COSC = 1nF
VDRAIN (V)
0
I DRAIN
(mA)
8
10
12
0.7
6
4
0.2
0.4
0.1
0.9
0.3
0.5
0.8
0.6
1
2
0
14
4180 G04
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