LT1074 Linear Technology, LT1074 Datasheet - Page 6

• Manufacturer Part Number: LT1074
• Description: Step-Down Switching Regulator
• Manufacturer: Linear Technology

LT1074/LT1076
6
TYPICAL PERFOR A CE CHARACTERISTICS
–100
–150
–200
200
150
100
–50
–10
–20
–30
–40
50
40
30
20
10
0
0
0
0
V
Shutdown Pin Characteristics
C
THIS POINT MOVES
1
Pin Characteristics
10
V ADJUSTED FOR
FB
I = 0 AT V = 2V
C
SLOPE 400k
2
DETAILS OF THIS
AREA SHOWN IN
OTHER GRAPH
20
V
V
FB
WITH V
IN
3
30
VOLTAGE (V)
VOLTAGE (V)
= 50V
C
2V
4
IN
40
5
50
6
60
W
7
LT1074•TPC01
LT1074•TPC04
70
8
U
80
9
–0.5
–1.5
–1.0
–2.0
–10
–15
–20
–25
–30
–35
–40
1.0
2.0
1.5
0.5
–5
20
18
16
14
12
10
0
0
4
8
6
2
0
0
V
0
Shutdown Pin Characteristics
0
Supply Current
C
Pin Characteristics
0.5
1
CURRENT FLOWS OUT
T
10
j
OF SHUTDOWN PIN
= 25 C
DEVICE NOT SWITCHING
2
SHUTDOWN
THRESHOLD
1.0
V
INPUT VOLTAGE (V)
FB
20
3
1.5
VOLTAGE (V)
VOLTAGE (V)
2.5V
4
2.0
V
30
C = 1V
5
2.5
40
6
3.0
7
50
LT1074•TPC02
LT1074•TPC11
3.5
LT1074•PC05
8
4.0
60
9
–100
–200
–300
–400
–500
–100
–150
–200
–250
–300
–350
–400
–50
500
400
300
200
100
100
50
0
0
Feedback Pin Characteristics
I
–2
0
LIM
–1
1
Pin Characteristics
2
0
START OF
FREQUENCY SHIFTING
T = 25 C
j
3
1
VOLTAGE (V)
VOLTAGE (V)
4
2
5
3
6
4
7
5
8
6
LT1074•TPC03
LT1074•TPC06
7
9
10
8