Rainbow-electronics MAX4880 Manuel d'utilisateur télécharger pdf (Page 2)

MAX4880

Overvoltage-Protection Controller with

Internal Disconnect Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= 5V, T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.) (Note 1)

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 referenced to GND.)

IN ............................................................................-0.3V to +30V

GATE ......................................................................-0.3V to +12V

EN, CB, FLAGV, BAT_OK, BTA, BTB, BTB_SNS .....-0.3V to +6V

Continuous Power Dissipation (T

= +70°C)

10-Pin TDFN (derate 18.5mW/°C above +70°C) ...1481.5mW

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

INPUT VOLTAGE (IN)

Input Voltage Range V

1.2

28.0

Overvoltage Trip Level OVLO V

rising 5.5 5.6 5.7 V

O ver vol tag e- Tr i p - Level H yster esi s

50 mV

Undervoltage-Lockout Threshold

UVLO V

falling 4.2

4.35

4.5 V

Undervoltage-Lockout Hysteresis

50 mV

Supply Current

+ I

BTA

No load, V

= 5.4V, V

= 0 or 5.5V,

= 0 or V

240

380 µA

INTERNAL SWITCH

BTA Input Range V

BTA

2.8 5.7 V

BTA Undervoltage Lockout

BTA

UVLO

Falling edge 2.4 2.7 V

BTA-Undervoltage-Lockout

Hysteresis

50 mV

BTB-Switch-Disconnect Trip

Level

BTB

TRIP

4.10 4.20

BTB-Switch-Disconnect

Hysteresis

200

Switch-Forward Current Limit I

FWD

450 525

600 mA

= +25°C 600

Switch-Reverse Current Limit I

REV

650

Voltage Drop (V

BTA

– V

BTB

= 400mA 110 mV

BTB Off Current

BTB-OFF

= 0 ( V

C B

= 0, or V

< V

U V L O

and V

BTA

= 0)

1µA

GATE

GATE Voltage V

GATE

sourcing 1µA , V

= 5V 9 10 V

GATE Pulldown Current I

> V

OVLO

, V

GATE

= 5V 60 mA

TIMING

GATE Startup Delay t

START

> V

UVLO

, V

GATE

> 0.3V (Figure 1) 20 50 80 ms

FLAGV Delay Time t

DELAY

GATE

= 0.3V,V

FLAGV

= 2.4V (Figure 1) 20 50 80 ms

GATE Turn-On Time t

GON

GAT E

= 0.3V to 8V , C

GAT E

= 1500p F ( Fi g ur e 1)

7ms

GATE Turn-Off Time t

GOFF

increasing from 5V to 8V at 3V/µs,

GATE

= 0.3V, C

GATE

= 1500pF (Figure 2)

620µs

1 2 3 4 5 6 7 8 9 10

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Rainbow-electronics MAX4880 Manuel d'utilisateur Page 2

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