參數(shù)資料
型號: LT3748HMS#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, PDSO12
封裝: LEAD FREE, PLASTIC, MSOP-16/12
文件頁數(shù): 26/30頁
文件大小: 284K
代理商: LT3748HMS#PBF
LT3748
5
3748fa
TYPICAL PERFORMANCE CHARACTERISTICS
Error Amplifier Transconductance
vs Temperature
Error Amplifier Output Current
vs RREF Pin Voltage
SENSE Pin Threshold
vs Temperature
EN/UVLO Current vs Temperature
EN/UVLO Threshold
vs Temperature
TC Pin Voltage vs Temperature
TA = 25°C, unless otherwise noted.
Maximum Discontinuous Off-Time
vs Temperature
GATE Rise and Fall Time vs Charge
GATE Rise and Fall Time
vs INTVCC Voltage
TEMPERATURE (°C)
–50
0
EN/UVLO
CURRENT
(μA)
0.5
1.0
1.5
2.0
050
100
150
3748 G10
2.5
3.0
–25
25
75
125
VEN/UVLO = 1.1V
VEN/UVLO = 0.9V
VEN/UVLO = 1.3V
TEMPERATURE (°C)
–50
EN/UVLO
THRESHOLD
(V)
1.20
1.30
150
3748 G11
1.10
1.00
0
50
100
–25
25
75
125
1.40
1.15
1.25
1.05
1.35
TEMPERATURE (°C)
–50
TC
VOLTAGE
(V)
0.5
0.6
0.7
150
3748 G12
0.4
0.3
0
50
100
–25
25
75
125
0.2
0.1
0.9
0.8
TEMPERATURE (°C)
–50
100
TRANSCONDUCTANCE
(μmhos)
110
130
140
150
200
170
0
50
75
3748 G13
120
180
190
160
–25
25
100 125
150
VIN = 100V
VIN = 6V
VREF (V)
0
I VC
(μA)
0
20
40
60
2.0
3748 G14
–20
–40
–10
10
30
50
–30
–50
–60
0.5
1.0
1.5
2.5
150°C
100°C
25°C
–50°C
TEMPERATURE (°C)
–50
SENSE
THRESHOLD
(mV)
80
120
150
3748 G15
40
0
50
100
–25
25
75
125
160
60
100
20
140
OVERCURRENT
VC = 2.2V
VC = 0.2V
TEMPERATURE (°C)
–50
20
MAXIMUM
DISCONTINUOUS
OFF-TIME
(μs)
21
23
24
25
30
27
0
50
75
3748 G16
22
28
29
26
–25
25
100 125
150
TOTAL GATE CHARGE (nC)
0
GATE
RISE
AND
FALL
TIME
(ns)
AVERAGE
GATE
SOURCE,
SINK
CURRENT
(A)
10
20
30
40
20
40
60
80
3748 G17
100
120
50
0
0.5
1.0
1.5
2.0
RISE TIME
FALL TIME
Q = C V
VINTVCC = 7V
tr, tf 10% TO 90%
AVERAGE
CURRENT
VINTVCC (V)
0
GA
TE
RISE
AND
F
ALL
TIME
(ns)
10
15
20
3748 G18
5
0
5
10
15
25
20
FALLING
RISING
CGATE = 3.3nF
tr, tf 10% TO 90%
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