Rainbow-electronics MAX4880 Uživatelský manuál stáhnout pdf (Strana 6)

MAX4880

Overvoltage-Protection Controller with

Internal Disconnect Switch

6 _______________________________________________________________________________________

Pin Description (continued)

PIN NAME FUNCTION

FLAGV

Active-Low, Open-Drain-Fault Flag Output. FLAGV goes low when either an overvoltage or undervoltage

fault occurs at IN. FLAGV is disabled when EN goes high. During startup, FLAGV has a delay of 50ms

after V

GATE

> 0.3V, before being initially driven high.

—EP

Exposed Pad. EP is internally connected to GND. Do not use EP as the only electrical ground connection.

GATE

1.2V

UVLO

0.3V

START

2.4V

DELAY

GON

FLAGV

Figure 1. Startup Timing Diagram

GATE

OVLO

0.3V

GOFF

0.4V

FLAG

FLAGV

Figure 2. Overvoltage Fault Timing Diagram

GATE

OVLO

80%

OVP

Figure 3. Power-Up Overvoltage Timing Diagram

GATE

0.3V

DIS

2.4V

Figure 4. Disable Timing Diagram

1 2 3 4 5 6 7 8 9 10

Internal Disconnect Switch 1
Package Information 10

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