參數(shù)資料
型號(hào): LT3958IUHE#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, PQCC36
封裝: 5 X 6 MM, LEAD FREE, PLASTIC, QFN-36
文件頁數(shù): 25/28頁
文件大小: 320K
代理商: LT3958IUHE#PBF
LT3958
6
3958f
INTVCC Line Regulation
INTVCC Dropout Voltage
vs Current, Temperature
INTVCC vs Temperature
INTVCC Load Regulation
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
TEMPERATURE (°C)
–50
7.0
INTV
CC
(V)
7.1
7.2
7.3
7.4
0
50
75
–25
25
100
125
3958 G13
INTVCC LOAD (mA)
0
6.8
7
7.1
7.2
7.3
10
20
25
6.9
5
15
3958 G14
INTV
CC
VOLTAGE
(V)
VIN = 8V
VIN (V)
0
INT
V
CC
VOL
TAGE
(V)
7.25
7.20
20
30
50
10
40
60
70
80
7.15
7.10
7.30
3958 G15
INTVCC LOAD (mA)
0
DROPOUT
VOL
TAGE
(mV)
700
600
800
400
500
200
300
4
2
68
10
100
0
900
3958 G16
125°C
25°C
0°C
–40°C
75°C
Internal Switch On-Resistance
vs Temperature
TEMPERATURE (°C)
–50
ON-RESIST
ANCE
(mΩ)
120
140
160
100
80
–25
25
0
50
75
100
125
20
0
60
180
40
3958 G17
Internal Switch On-Resistance
vs INTVCC
SEPIC Typical Start-Up
Waveforms
SEPIC FBX Frequency Foldback
Waveforms During Overcurrent
INTVCC (V)
4
ON-RESIST
ANCE
(mΩ)
98
100
96
94
6789
5
11
10
12
92
90
88
102
3958 G18
5ms/DIV
SEE TYPICAL APPLICATION: 10V TO 60V INPUT,
12V OUTPUT SEPIC CONVERTER
VOUT
5V/DIV
IL1A + IL1B
2A/DIV
3958 G19
VIN = 24V
50μs/DIV
VOUT
10V/DIV
VSW
20V/DIV
IL1A + IL1B
2A/DIV
3958 G20
VIN = 24V
SEE TYPICAL APPLICATION: 10V TO 60V INPUT,
12V OUTPUT SEPIC CONVERTER
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