MAX4987AE/MAX4987BE
Overvoltage-Protection Controller
with USB ESD Protection
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= +2.2V to +28V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
IN
= +5V and T
A
= +25°C.)
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.
(All voltages referenced to GND.)
IN ............................................................................-0.3V to +30V
OUT.............................................................-0.3V to +(IN + 0.3V)
V
CC
, EN, ACOK, CD+, CD- ......................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C) for multilayer board:
8-Pin TDFN (derate 16.7mW/°C above +70°C) .........1333mW
Package Junction-to-Ambient Thermal Resistance
(
θ
JA
) (Note 1) ................................................................60.0°C/W
Package Junction-to-Case Thermal Resistance
(
θ
JC
) (Note 1) ................................................................10.8°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) .........................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT
ANALOG SWITCH
Input-Voltage Range V
IN
2.2 28 V
V
CC
Input Voltage V
CC
5.5 V
EN = 0V, V
IN
> V
UVLO
60 150
Input Supply Current I
IN
EN = 5V, V
IN
> V
UVLO
50 100
µA
UVLO Supply Current I
UVLO
V
IN
< V
UVLO
40 µA
MAX4987AE 2.3
(V
IN
falling)
MAX4987BE 3.8
MAX4987AE 2.35 2.55 2.75
IN Undervoltage Lockout V
UVLO
(V
IN
rising)
MAX4987BE 3.85 4.2 4.45
V
IN Undervoltage Lockout Hysteresis 1%
(V
IN
rising) 5.55 6.15 6.45
Overvoltage Trip Level V
OVLO
(V
IN
falling) 5.5
V
IN Overvoltage Lockout Hysteresis 1%
Switch On-Resistance R
ON
V
IN
= 5V, I
OUT
= 500mA 100 200 mΩ
Overcurrent Protection Threshold I
LIM
1.5 4.2 A
Maximum Output Capacitance V
IN
= 5V, no overcurrent shutdown 1000 µF
CD+ and CD- Leakage Current I
LKG_CD
V
CC
= 5.5V, V
CD_
= 0V, 3.3V -300 +300 nA
CD+ and CD- Capacitance C
CD
f = 1MHz, V
CD_
= 0.5
P-P
3pF
DIGITAL SIGNALS
ACOK Output Low Voltage V
OL
I
SINK
= 1mA 0.4 V
ACOK High-Leakage Current V
ACOK
= 5.5V, flag deasserted 1 µA
EN Input-Voltage High V
IH
1.4 V
EN Input-Voltage Low V
IL
0.4 V
EN Input-Leakage Current I
LEAK
V
EN
= 5.5V -1 +1 µA
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, go to www.maxim-ic.com/thermal-tutorial
.
(12 Seiten)
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