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LT1683 Datasheet(PDF) 5 Page - Linear Technology

Part # LT1683
Description  Ultralow Noise Push-Pull DC/DC Controller
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1683 Datasheet(HTML) 5 Page - Linear Technology

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5
LT1683
1683f
SHDN Pin Hysteresis Current vs
Temperature
VIN Current vs Temperature
CS Pin to VC Pin Transfer
Function
Slope Compensation
Gate Drive A/B High Voltage vs
Temperature
Gate Drive A/B Low Voltage vs
Temperature
Gate Drive Undervoltage Lockout
Voltage vs Temperature
V5 Voltage vs Load Current
TYPICAL PERFOR A CE CHARACTERISTICS
TEMPERATURE (
°C)
–50 –25
0
25
50
75
100 125 150
1683 G09
27
25
23
21
19
17
15
TEMPERATURE (
°C)
–50 –25
0
25
50
75
100 125 150
1683 G10
24
22
20
18
16
14
12
10
VIN = 12 RCSL, RVSL = 5.7k
WITH NO EXTERNAL MOSFETs
VIN = 20 RCSL, RVSL = 17k
VIN = 12 RCSL, RVSL = 17k
CS PIN VOLTAGE (mV)
0
20
40
60
80
100
120
1683 G11
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
TA = 25°C
DUTY CYCLE (%)
0
10
20
30
40
50
1683 G12
110
100
90
80
70
60
50
VC PIN = 0.9V
TA = 25°C
TEMPERATURE (
°C)
–50 –25
0
25
50
75
100 125 150
1683 G13
10.7
10.6
10.5
10.4
10.3
10.2
10.1
10.0
9.90
9.80
9.70
6.5
6.4
6.3
6.2
6.1
6.0
5.9
5.8
5.7
5.6
5.5
GCL = 12V
GCL = 6V
VIN = 12V
NO LOAD
TEMPERATURE (
°C)
–50 –25
0
25
50
75
100 125 150
1683 G14
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
VIN = 12V
NO LOAD
TEMPERATURE (
°C)
–50 –25
0
25
50
75
100 125 150
1683 G15
7.3
7.2
7.1
7.0
6.9
6.8
6.7
6.6
6.5
6.4
6.3
GCL = 6V
TEMPERATURE (
°C)
–50 –25
0
25
50
75
100 125 150
1683 G16
9.5
9.3
9.1
8.9
8.7
8.5
8.3
8.1
7.9
7.7
7.5
SS VOLTAGE = 0.9V
LOAD CURRENT (mA)
–15
–10
–5
0
510
15
1683 G17
5.08
5.06
5.04
5.02
5.00
4.98
4.96
T = 125
°C
T = 25
°C
T = –40
°C
Soft-Start Current vs Temperature



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