Instruction Manual

MAX5042/MAX5043
Two-Switch Power ICs with Integrated
Power MOSFETs and Hot-Swap Controller
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
POSINPWM
= 20V to 76V, V
REG15
= 18V, C
REG15
= 4.7µF, C
REG9
= 1µF, C
REG5
= 1µF, R
RCOSC
= 24kΩ, C
RCOSC
= 100pF, C
BST
=
0.22µF, R
DRVDEL
= 10kΩ, C
DRVDEL
= 0.22µF, V
CSS
= V
CSP
= V
CSN
= V
RAMP
= V
PWMNEG
= V
NEGIN
= 0, T
A
= -40°C to +125°C,
unless otherwise noted. Typical values are at V
POSINPWM
= 48V, T
A
= +25°C, unless otherwise noted. All voltages are referred to
PWMNEG, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DEN Hysteresis MAX5043 only 124 mV
DEN Input Resistance MAX5043 only, looking into DEN 18 55 kΩ
SUPPLY CURRENT
From V
POSINHS
= V
POSINPWM
= 76V,
CSS shorted to PWMNEG, REG15 = 18V
23
From REG15 = 18V, V
POSINHS
=
V
POSINPWM
= 76V, CSS shorted to
PWMNEG
6 8.5
Supply Current
From REG15 = 18V, V
POSINHS
=
V
POSINPWM
= 76V, V
DRNH
= V
XFRMRH
=
V
XFRMRL
= V
SRC
= 0V
20
mA
Standby Supply Current
MAX5042 only, V
POSINHS
= V
POSINPWM
=
V
PWMNEG
= V
PWMPNEG
= V
HSDRAIN
= 76V,
HSEN = NEGIN
0.6 1 mA
HOT-SWAP CONTROLLER (MAX5042 Only)
Hot-Swap UVLO Threshold
POSINHS with respect to NEGIN, voltage
rising
27 34 V
Hot-Swap UVLO Hysteresis 3.1 V
Hot-Swap UVLO Resistance Looking into HSEN 18 55 kΩ
Startup Delay From HSEN rising to HSOK falling 50 165 350 ms
HSEN Turn-Off Delay From HSEN falling to HSOK rising 3 10 25 ms
HSOK Output-High Leakage
Current
±1 µA
HSEN Reference Threshold Rising with respect to NEGIN 1.11 1.35 V
HSEN Hysteresis 124 mV
HSOK Output Low Voltage Sinking 5mA 0.4 V
HSGATE Voltage High 7.5 10.0 V
Hot-Swap Slew Rate C
L
= 10µF, from HSDRAIN to NEGIN 10 V/ms