Rainbow-electronics MAX5937 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX5936/MAX5937

-48V Hot-Swap Controllers with V

Step Immunity and No R

SENSE

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

, V

OUT

, PGOOD (PGOOD), LP,

STEP_MON to GND............................................+0.3V to -85V

PGOOD (PGOOD) to V

OUT

....................................-0.3V to +85V

PGOOD (PGOOD), LP, STEP_MON to V

............-0.3V to +85V

GATE to V

...........................................................-0.3V to +20V

UVLO to V

.............................................................-0.3V to +6V

Input Current

LP (internally, duty-cycle limited).........................................1A

PGOOD (PGOOD) (continuous) .....................................80mA

GATE (during 15V clamp, continuous)...........................30mA

GATE (during 2V clamp, continuous).............................50mA

GATE (during gate pulldown, continuous)......................50mA

Continuous Power Dissipation (T

= +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

ELECTRICAL CHARACTERISTICS

= -10V to -80V, V

= GND - V

, V

STEP_MON

, R

= 200Ω, UVLO open, T

= -40°C to +85°C, unless otherwise noted.

Typical values are at V

= -48V, T

= +25°C.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS

MIN TYP MAX

UNITS

Operating Voltage Range V

Referenced to GND

-80 -10

Operating Supply Current I

0.95 1.4

UVLO,R

l increasing

-33.5 -31.0 -29.5

Default V

Undervoltage Lockout

UVLO,F

l decreasing

-28

UVLO Reference Threshold,

Rising

UVLO_REF

UVLO

increasing

1.219 1.25 1.281

UVLO Reference Threshold,

Falling

UVLO_REF

UVLO

decreasing

1.069 1.125 1.181

UVLO Input Resistance 20 50 kΩ

UVLO Transient Rejection t

OVREJ

0.8 1.5 2.25

Power-Up Delay (Note 3) t

ONDLY

220 380

and UVLO Glitch Rejection

(Note 4)

REJ

0.8 1.5 2.25

OUT

to V

Leakage Current V

= -80V, V

OUT

= GND

0.01

1µA

LP to V

Leakage Current V

= -80V, V

= GND

0.01

1µA

= 10V

6.5 6.8 7.2

External Gate-Drive Voltage V

GATE

- V

14 ≤ V

≤ 80V

8.1

12.8

CLAMP

= 9mA

13.5

MOSFET fully

enhanced

CLAMP

= 20mA 17

19.5

CLAMP

= 1mA

2.1 2.55

GATE to V

Clamp Voltage

Power-off,

= GND

CLAMP

= 10mA

2.5 2.9

Open-Loop Gate-Charge Current

GATE

= V

, V

OUT

= GND

-66 -52 -35

µA

> 10V 9

14.1

GATE Pulldown Switch

On-Resistance

GATE

- V

500mV

> 14V

7.5 12.5

Ω

Output-Voltage Slew Rate SR l dV

OUT

/dt l

2.4

14.8

V/ms

1 2 3 4 5 6 7 ... 22 23

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