Rainbow Electronics MAX4981 - Manual (Page 2)

MAX4978–MAX4981
Overvoltage Protector with
Active Current Limit
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 5.0V, V EN = 0V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(Voltages referenced to GND.)
IN,
SDT ................................................................. -0.3V to +30V
OUT ........................................................................... -0.3V to IN
EN, BAT .................................................................. -0.3V to +6V
SDT Continuous Current ................................................. ±50mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin 2mm x 3mm TDFN (derate 16.7mW/°C
above +70°C) ........................................................... 1333mW
Junction-to-Case Thermal Resistance (
θ
JC
) (Note 1)
8-Pin 2mm x 3mm TDFN ......................................... 10.8°C/W
Junction-to-Ambient Thermal Resistance ( θ
JA
) (Note 1)
8-Pin 2mm x 3mm TDFN ............................................ 60°C/W
Operating Temperature Range ......................... -40°C to +85°C
Junction Temperature .................................................... +150°C
Storage Temperature Range ........................... -65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range V IN 2.3 28 V
Input Supply Current I IN I OUT < I LIM_MIN 130 190 µA
UVLO Supply Current I UVLO V IN = 2.3V 35 60 µA
Shutdown Supply Current I SHDN V EN = 5V 15 23 µA
V IN falling 4.2
MAX4978
V IN rising 4.3 4.4 4.5
V IN falling 2.5
IN Undervoltage Lockout V
UVLO
MAX4979/MAX4980/
MAX4981
V IN rising 2.56 2.63 2.70
V
IN Undervoltage Lockout
Hysteresis
1 %
V IN falling 5.5 MAX4978/MAX4980/
MAX4981
V IN rising 5.6 5.7 5.8
V IN falling 6.5
IN Overvoltage Lockout V OVLO
MAX4979
V IN rising 6.65 6.80 6.95
V
IN Overvoltage Lockout Hysteresis 1 %
BAT Overvoltage Trip Level V BOTL MAX4980/MAX4981, V BAT rising 4.3 4.4 4.5 V
BAT Overvoltage Hysteresis MAX4980/MAX4981 1 %
BAT Input Leakage Current I LKGB MAX4980/MAX4981, V BAT = 4.2V 1 µA
Switch On-Resistance R ON I OUT = 100mA 85 160 m Ω
T A =+25°C 850 900 950
T A = 0°C to +85°C 800 1000
MAX4978, MAX4979,
MAX4980
T A = -40°C to +0°C 780 1000
T A =+25°C 1850 1950 2050
Overcurrent Protection Threshold I LIM
MAX4981
T A = -40°C to +85°C 1750 1950 2150
mA
Thermal Shutdown T SHDN T A rising 160 °C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial .