Datasheet

LTC4232
4
4232fa
TEMPERATURE (°C)
–50
I
SET
RESISTOR (kΩ)
22
21
20
19
18
–25 0 25
4232 G09
50 75 100
FB VOLTAGE (V)
CURRENT LIMIT VALUE (A)
6
5
4
3
2
1
0
4232 G07
0 0.2 0.4 0.6 0.8 1.0 1.2
I
SET
OPEN
R
SET
(Ω)
1k
CURRENT LIMIT THRESHOLD VALUE (A)
6
5
4
3
2
1
0
10k 100k
4232 G08
1M 10M
TEMPERATURE (°C)
–50
UV HYSTERESIS (V)
0.10
0.08
0.06
0.04
–25 0 25
4232 G04
50 75 100
TEMPERATURE (°C)
–50
TIMER PULL-UP CURRENT (µA)
–110
–105
–100
–95
–90
–25 0 25
4232 G05
50 75 100
TEMPERATURE (°C)
–50
UV LOW-HIGH THRESHOLD (V)
1.234
1.232
1.230
1.228
1.226
–25 0 25
4232 G03
50 75 100
V
DD
(V)
0
1.0
I
DD
(mA)
1.2
1.4
1.6
1.8
2.0
5 10 15 20
4232 G01
25 30
–40°C
25°C
85°C
I
LOAD
(mA)
0
0
0.5
1.5
1.0
INTV
CC
(V)
3.5
2.0
2.5
3.0
4232 G02
–14–12–10–8–6–4–2
V
DD
= 5V
V
DD
= 3.3V
Typical perForMance characTerisTics
I
DD
vs V
DD
INTV
CC
Load Regulation
UV Low-High Threshold
vs Temperature
UV Hysteresis vs Temperature
Timer Pull-Up Current
vs Temperature
Current Limit Delay
(t
PHL(ILIM)
vs Overdrive)
Current Limit Threshold Foldback
Current Limit Adjustment
(I
OUT
vs R
SET
)
I
SET
Resistor vs Temperature
T
A
= 25°C, V
DD
= 12V unless otherwise noted.
OUTPUT CURRENT (A)
0
CURRENT PROPAGATION DELAY (µs)
1000
100
10
1
0.1
10
4232 G06
20 30