MAX5921 datasheet(2/18 Pages) MAXIM

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-48V Hot-Swap Controllers with External

RSENSE and High Gate Pulldown Current

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VEE = 0V, VDD = 48V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Notes 1, 4)

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 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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLIES

Operating Input Voltage Range

VDD

Supply Current

IDD

Current into VDD with UV = 3V, OV, DRAIN,

SENSE = VEE, GATE = floating

0.7

GATE DRIVER AND CLAMPING CIRCUITS

Gate Pullup Current

IPU

GATE drive on, VGATE = VEE

-30

-45

-60

µA

Gate Pulldown Current

IPD

VSENSE - VEE = 100mV, VGATE = 2V (Note 2)

External Gate Drive

∆VGATE

VGATE - VEE, steady state, 20V

≤ VDD ≤ 80V

13.5

GATE to VEE Clamp Voltage

VGSCLMP

VGATE - VEE, IGS = 30mA

16.4

CIRCUIT BREAKER

Current-Limit Trip Voltage

VCL

VCL = VSENSE - VEE

SENSE Input Current

ISENSE

VSENSE = 50mV

-1

-0.2

µA

UNDERVOLTAGE LOCKOUT

Supply Internal Undervoltage

Lockout Voltage High

VUVLOH

VDD increasing

13.8

15.4

17.0

Supply Internal Undervoltage

Lockout Voltage Low

VUVLOL

VDD decreasing

11.8

13.4

15.0

UV INPUT

UV High Threshold

VUVH

UV voltage increasing

1.240

1.255

1.270

UV Low Threshold

VUVL

UV voltage decreasing

1.105

1.125

1.145

UV Hysteresis

VUVHY

130

UV Input Current

IINUV

UV = VEE

-0.5

µA

OV INPUT

OV High Threshold

VOVH

OV voltage rising

1.235

1.255

1.275

OV Low Threshold

VOVL

OV voltage decreasing

1.189

1.205

1.221

OV Voltage Reference Hysteresis

VOVHY

OV Input Current

IINOV

OV = VEE

-0.5

µA

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