MAX5921 Datasheet, PDF (2/18 Pages) Maxim Integrated Products – -48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current

-48V Hot-Swap Controllers with External
R_SENSE and High Gate Pulldown Current
ABSOLUTE MAXIMUM RATINGS
All Voltages Are Referenced to VEE, Unless Otherwise Noted
Supply Voltage (VDD - VEE )................................-0.3V to +100V
DRAIN, PWRGD, PWRGD ....................................-0.3V to +100V
PWRGD to DRAIN .............................................… -0.3V to +95V
PWRGD to VDD .......................................................-95V to +85V
SENSE (Internally Clamped) .................................-0.3V to +1.0V
GATE (Internally Clamped) ....................................-0.3V to +18V
UV and OV..............................................................-0.3V to +60V
Current into SENSE...........................................................+40mA
Current into GATE...........................................................+300mA
Current into Any Other Pin................................................+20mA
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
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
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.
ELECTRICAL CHARACTERISTICS
(V_EE = 0V, V_DD = 48V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C, unless otherwise noted.) (Notes 1, 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
POWER SUPPLIES
Operating Input Voltage Range
V_DD
20
Supply Current
I_DD
Current into V_DD with UV = 3V, OV, DRAIN,
SENSE = V_EE, GATE = floating
GATE DRIVER AND CLAMPING CIRCUITS
Gate Pullup Current
Gate Pulldown Current
I_PU
GATE drive on, V_GATE = V_EE
-30
I_PD
V_SENSE - V_EE = 100mV, V_GATE = 2V (Note 2) 24
External Gate Drive
GATE to V_EE Clamp Voltage
∆V_GATE V_GATE - V_EE, steady state, 20V ≤ V_DD ≤ 80V 10
V_GSCLMP V_GATE - V_EE, I_GS = 30mA
15
CIRCUIT BREAKER
Current-Limit Trip Voltage
V_CL
V_CL = V_SENSE - V_EE
40
SENSE Input Current
I_SENSE V_SENSE = 50mV
-1
UNDERVOLTAGE LOCKOUT
TYP MAX UNITS
80
V
0.7
2
mA
-45
-60
µA
50
70
mA
13.5
18
V
16.4
18
V
50
60
mV
-0.2
0
µA
Supply Internal Undervoltage
Lockout Voltage High
V_UVLOH V_DD increasing
13.8 15.4 17.0
V
Supply Internal Undervoltage
Lockout Voltage Low
UV INPUT
UV High Threshold
UV Low Threshold
UV Hysteresis
UV Input Current
OV INPUT
OV High Threshold
OV Low Threshold
OV Voltage Reference Hysteresis
OV Input Current
V_UVLOL V_DD decreasing
V_UVH
V_UVL
V_UVHY
I_INUV
UV voltage increasing
UV voltage decreasing
UV = V_EE
V_OVH
V_OVL
V_OVHY
I_INOV
OV voltage rising
OV voltage decreasing
OV = V_EE
11.8 13.4 15.0
V
1.240 1.255 1.270
V
1.105 1.125 1.145
V
130
mV
-0.5
0
µA
1.235 1.255 1.275
V
1.189 1.205 1.221
V
50
mV
-0.5
0
µA
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