Datasheet
MAX5920
-48V Hot-Swap Controller
with External R
SENSE
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
EE
= 0V, V
DD
= 48V, T
A
= -40°C to +85°C. Typical values are at T
A
= +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 V
EE
, Unless Otherwise Noted.
Supply Voltage (V
DD
- V
EE
) .................................-0.3V to +100V
DRAIN, PWRGD, PWRGD ....................................-0.3V to +100V
PWRGD to DRAIN .............................................… -0.3V to +95V
PWRGD to V
DD
........................................................-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 Through SENSE ...................................................±40mA
Current into GATE...........................................................±300mA
Current into Any Other Pin................................................±20mA
Continuous Power Dissipation (T
A
= +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 V
DD
20 80 V
Supply Current I
DD
(Note 2) 0.7 2 mA
GATE DRIVER AND CLAMPING CIRCUITS
Gate Pin Pullup Current I
PU
GATE drive on, V
GATE
= V
EE
-30 -45 -60 µA
Gate Pin Pulldown Current I
PD
GATE drive off , V
GATE
= 2V 24 50 70 mA
External Gate Drive ∆V
GATE
V
GATE
- V
EE
, 20V ≤ V
DD
≤ 80V 10 13.5 18 V
GATE to V
EE
Clamp Voltage V
GSCLMP
V
GATE
- V
EE
, I
GS
= 30mA 15 16.4 18 V
CIRCUIT BREAKER
Current-Limit Trip Voltage V
CL
V
CL
= V
SENSE
- V
EE
40 50 60 mV
SENSE Input Bias Current V
SENSE
= 50mV -1 -0.2 0 µA
UNDERVOLTAGE LOCKOUT
Internal Undervoltage Lockout
Voltage High
V
UVLOH
V
DD
increasing 13.8 15.4 17.0 V
Internal Undervoltage Lockout
Voltage Low
V
UVLOL
V
DD
decreasing 11.8 13.4 15.0 V
UV PIN
UV High Threshold V
UVH
UV voltage increasing 1.240 1.255 1.270 V
UV Low Threshold V
UVL
UV voltage decreasing 1.105 1.125 1.145 V
UV Hysteresis V
UVHY_
130 mV
UV Input Bias Current I
INUV
-0.5 0 µA
OV PIN
OV High Threshold V
OVH
OV voltage increasing 1.235 1.255 1.275 V
OV Low Threshold V
OVL
OV voltage decreasing 1.189 1.205 1.221 V
OV Voltage Reference Hysteresis V
OVHY
50 mV
OV Input Bias Current I
INOV
V
OV
= V
EE
-0.5 0 µA
PWRGD OUTPUT SIGNAL REFERENCED TO DRAIN
DRAIN Input Bias Current I
DRAIN
V
DRAIN
= 48V 10 80 250 µA