MAX20333
Adjustable Current-Limit Switch
with Low Power Mode
Electrical Characteristics (continued)
(V = 3.5V to 22V, T = -40°C to +85°C, unless otherwise noted. Typical values are at V = 9V, T = +25°C, C = C
= 1µF)
IN
A
IN
A
IN
OUT
(Note 2)
PARAMETER
INTERNAL FET
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
= 5V, I
= 200mA (lower than I ),
Switch-On Resistance,
Normal Mode, High
Current Mode
IN
OUT LIM
23
30
36
T = 25°C
R
mΩ
Ω
A
ON
T = 85°C
A
Switch-On Resistance,
Low Power Mode
Low Power mode, I
= 25°C
= 20mA, V = 9V, T
OUT IN A
R
0.30
0.42
0.54
ONLPM
R
R
R
R
= 421Ω
= 2kΩ
4607
970
480
186
4750
1000
500
4892
1030
520
SETI
SETI
SETI
SETI
= 4kΩ
Forward Current Limit
I
mA
LIM
= 10kΩ
200
214
Internally-set current limit in High Current
Mode
5280
200
5500
5720
700
Forward Current Limit in
Low Power Mode
Low Power mode
mA
%
3A, R
5A, R
= 667Ω
= 400Ω
-12
-15
-5
SETI
Current Fold-Back
-1.6
SETI
V
= 9V, C
= 0µF, I
LOAD
ramping with
ramping with
IN
LOAD
Current-Limit Overshoot
13
%
I
= 1A/ms slew rate.
SLOPE
V
= 9V, C
= 0µF, I
IN
LOAD LOAD
Current-Limit Reaction
Time
t
slope 1A/ms. Current outside 5% of regulation
value.
110
µs
LIM
Increase (V - V
) drop until FLAG
IN
IN
OUT
FLAG Assertion Drop
Voltage Threshold
V
asserts, I
limiting, V = 9V. Not valid in
350
140
425
165
500
190
mV
mV
FA
OUT
Low Power mode.
OUT Shutdown Detection
Threshold
Low Power mode, increase (V - V
until FLAG asserts
) drop
OUT
IN
V
SD_THR
SETI
Normal Mode
High Current Mode
1333
2666
1.50
1.8
Current Mirror Output
Ratio
C
I
/I
OUT SETI
A/A
IRATIO
R
x I /C
V
RI
1.47
1.53
2.0
+1
V
V
SETI
LIM IRATIO
Internal SETI Clamp
5mA into SETI
SETI Leakage Current
SETI Offset Current
V
V
= 1.6V
-1
0
µA
µA
SETI
= 22V, I
= 0A, V = 0V
SETI
17
34
IN
OUT
EN, EN, PG LOGIC INPUTS
EN, EN Input Logic High
EN, EN Input Logic Low
1.4
-1
V
V
0.4
+1
EN, EN, PG Leakage
Current
0V - 5.5V
µA
V
EN = low, EN = high
EN = high, EN = low
1.4
PG Input Threshold High
1.455
1.500
1.545
Maxim Integrated
│ 3
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