LTC1435A Linear Technology, LTC1435A Datasheet - Page 4

• Manufacturer Part Number: LTC1435A
• Description: High Efficiency Low Noise Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

TYPICAL PERFORMANCE CHARACTERISTICS
LTC1435A
4
152
148
146
154
150
–10
2.5
2.0
1.5
1.0
0.5
10
–5
f
0
O
5
– 40
– 40
0
Input Supply and Shutdown
Current vs Input Voltage
Normalized Oscillator Frequency
vs Temperature
Maximum Current Sense
Threshold Voltage vs Temperature
–15
–15
5
SHUTDOWN
V
EXTV
OUT
10
10
INPUT VOLTAGE (V)
TEMPERATURE ( C)
TEMPERATURE ( C)
EXTV
10
CC
= 5V
V
OUT
= V
35
35
CC
OUT
= 3.3V
15
= OPEN
60
60
20
85
85
W
25
110
110
1435A G10
1435A G07
1435A G13
U
135
135
30
100
80
60
40
20
0
50mV/DIV
V
OUT
3
1
0
4
2
– 40
– 0.3
– 0.5
RUN/SS Pin Current
vs Temperature
Transient Response
I
LOAD
0.5
0.3
0
0
INTV
vs INTV
–15
= 50mA to 1A
V
EXTVCC
CC
10
TEMPERATURE ( C)
INTV
Regulation
CC
= 0V
5
CC
Load Current
35
70 C
25 C
LOAD CURRENT (mA)
60
10
85
110
15
1435A G11
1435A G14
135
1435A G08
20
50mV/DIV
– 0.25
– 0.50
– 0.75
–1.50
–1.00
–1.25
V
200
180
160
140
120
100
OUT
80
60
40
20
0
0
– 40
EXTV
vs INTV
0
SFB Pin Current vs Temperature
Transient Response
I
LOAD
–15
2
= 1A to 3A
CC
4
INTV
CC
Switch Drop
10
6
TEMPERATURE ( C)
Load Current
CC
LOAD CURRENT (mA)
8
35
10
60
12
14
85
16
– 55 C
110
70 C
25 C
1435A G12
1435A G15
1435A G09
18
135
20