User Manual

MAX4881–MAX4884
Overvoltage Protection Controllers with
Current Limit in TDFN
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INPUT VOLTAGE (IN)
Input Voltage Range V
IN
1.2 28 V
MAX4881/MAX4883 5.5 5.6 5.7
Overvoltage Trip Level OVLO V
IN
rising
MAX4882/MAX4884 4.4 4.5 4.6
V
Overvoltage-Trip-Level
Hysteresis
50 mV
MAX4881/MAX4883 4.2 4.35 4.5
Undervoltage Lockout Threshold UVLO V
IN
falling
MAX4882/MAX4884 2.4 2.55 2.7
V
Undervoltage Lockout Hysteresis 50 mV
Supply Current I
IN
+ I
BTA
No load, V
EN
= 0 or 5.5V,
V
IN
= V
OVLO (MIN)
- 0.1V, V
CB
= V
IN
240 380 µA
INTERNAL SWITCH
BTA Input Range V
BTA
2.8 5.7 V
BTA Undervoltage Lockout BTA
UVLO
V
BTA
falling 2.4 2.7 V
BTA-Undervoltage-Lockout
Hysteresis
50 mV
MAX4881/MAX4882, V
BTB
= GND 1 1.1 1.25
Switch-Forward Current Limit I
FWD
MAX4883/MAX4884, V
BTB
= GND 0.6 0.7 0.775
A
MAX4881/MAX4882 1.25
Switch-Reverse Current Limit I
REV
MAX4883/MAX4884 0.775
A
V
BTA
= 5V
(MAX4881/MAX4883)
110
Voltage Drop (V
BTA
- V
BTB
)I
L
= 400mA
V
BTA
= 4V
(MAX4882/MAX4884)
110
mV
Blanking Time t
BLANK
20 50 80 ms
BTB Off Current I
BTB-OFF
V
EN
= 0, V
CB
= 0 1 µA
GATE
V
IN
= 5V (MAX4881/MAX4883) 9 10
GATE Voltage V
GATE
I
GATE
sourcing
1µA
V
IN
= 4.3V
(MAX4882/MAX4884)
7.6 8.6
V
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= +5V (MAX4881/MAX4883), V
IN
= +4V (MAX4882/MAX4884), T
A
= -40°C to +85°C, unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 1)
Note 1: All devices are 100% tested at T
A
= +25°C. Electrical limits over the full temperature range are guaranteed by design.