Datasheet

MAX14588 1A Adjustable Overcurrent and Overvoltage
Protector with High Accuracy
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)
(V
IN
= 4.5V to 36V, T
A
= -40ºC to +125ºC, unless otherwise noted. Typical values are at V
IN
= 24V, R
SETI
= 12kΩ, T
A
= +25ºC.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
External UVLO Leakage I
UVLO_LEAK
V
UVLO
< 1.2V -100 +100 nA
BG Reference Voltage V
BG
1.196 1.220 1.247 V
CLHS Voltage V
CLHS
Source 100µA 23 3.5 V
INTERNAL FETs
Internal FETs On-Resistance R
ON
I
LOAD
= 100mA, V
IN
≥ 8V 190 370 mΩ
Current-Limit Adjustment Range I
LIM
0.15 1.0 A
Current-Limit Accuracy
0.15A ≤ I
LIM
< 0.3A -20 +20
%
0.3A ≤ I
LIM
< 1.0A -10 +10
FLAG Assertion Drop Voltage
Threshold
V
FA
Increase (V
IN
- V
OUT
) drop until FLAG
asserts, V
IN
= 24V
400 600 800 mV
FLAG Output Logic-Low Voltage I
SINK
= 1mA 0.4 V
FLAG Output Leakage Current V
IN
= V
FLAG
= 5V, ag deasserted 2 µA
Reverse-Current Blocking
Threshold
V
RIB
V
OUT
- V
IN
25 100 250 mV
Reverse-Blocking Supply Current I
RBL
V
OUT
- V
IN
> 130mV, current into OUT 430 700 µA
LOGIC INPUTS
HVEN Threshold Voltage V
HVENTH
1 2 3.5 V
HVEN Threshold Hysteresis 2 %
HVEN Input Current I
HVEN_
V
HVEN
= 36V 26 41 µA
HVEN Input Reverse Current I
HVEN_R
V
IN
= V
HVEN
= -36V -43 -28 µA
EN, RIEN, CLTS1, CLTS2,
CLTS_MODE Input Logic-High
V
IH
1.4 V
EN, RIEN, CLTS1, CLTS2,
CLTS_MODE Input Logic- Low
V
IL
0.4 V
EN, RIEN, CLTS1, CLTS2,
CLTS_MODE Input Leakage
Current
I
LEAK
V
LOGIC
= 5V -1 +1 µA
DYNAMIC (NOTE 5)
Switch Turn-On Time
t
ON
From OFF to ON (see Table 2),
R
LOAD
= 240Ω, C
OUT
= 470µF
500 µs
Switch Turn-Off Time
t
OFF
From ON to OFF (see Table 2),
R
LOAD
= 47Ω, C
OUT
= 1µF
3 µs
Overvoltage Switch Turn-Off
Time
t
OFF_OVP
From (V
IN
> V
OVLO
) to
(V
OUT
= 80% of V
IN_OVLO
),
R
LOAD
= 47Ω
3 µs
Overcurrent Switch Turn-Off Time
t
OFF_OCP
After t
BLANK
3 µs