Datasheet

4
LTC1435A
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Input Supply and Shutdown
Current vs Input Voltage
INPUT VOLTAGE (V)
0
0
SUPPLY CURRENT (mA)
SHUTDOWN CURRENT (µA)
0.5
1.0
1.5
2.0
2.5
0
20
40
60
80
100
5
10 15 20
1435A G07
25 30
V
OUT
= 3.3V
EXTV
CC
= OPEN
V
OUT
= 5V
EXTV
CC
= V
OUT
SHUTDOWN
EXTV
CC
Switch Drop
vs INTV
CC
Load Current
INTV
CC
LOAD CURRENT (mA)
0
EXTV
CC
– INTV
CC
(mV)
120
160
200
16
1435A G09
80
40
100
140
180
60
20
0
4
8
12
218
6
10
14
20
–55°C
25°C
70°C
INTV
CC
LOAD CURRENT (mA)
0
∆INTV
CC
(%)
0
0.3
20
1435A G08
–0.3
–0.5
5
10
70°C
25°C
15
0.5
V
EXTVCC
= 0V
INTV
CC
Regulation
vs INTV
CC
Load Current
Normalized Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–40
FREQUENCY (%)
5
10
35 85
1435A G10
f
O
–15 10
60 110 135
–5
–10
RUN/SS Pin Current
vs Temperature
TEMPERATURE (°C)
–40
0
RUN/SS CURRENT (µA)
1
2
3
4
–15 10 35 60
1435A G11
85 110 135
SFB Pin Current vs Temperature
TEMPERATURE (°C)
–40
SFB CURRENT (µA)
–0.50
–0.25
0
35 85
1435A G12
–0.75
–1.00
–15 10
60 110 135
–1.25
–1.50
TEMPERATURE (°C)
–40
146
CURRENT SENSE THRESHOLD (mV)
148
150
152
154
–15 10 35 60
1435A G13
85 110 135
Transient Response
Transient Response
Maximum Current Sense
Threshold Voltage vs Temperature
V
OUT
50mV/DIV
I
LOAD
= 50mA to 1A 1435A G14
I
LOAD
= 1A to 3A 1435A G15
V
OUT
50mV/DIV