Enable-IT 350 Manuel d'utilisateur télécharger pdf (Page 2)

NCV8772

http://onsemi.com

Driver

With

Current

Limit

GND

EnableEN

Thermal

Shutdown

Oscillator

Reference

Erorr Amplifier Reset Comparator

Timing

Circuit

Reset Driver

Figure 2. Simplified Block Diagram

out

* D2PAK−7 ONLY

** Pull−Down Resistor (typ 150 kW) active only in Reset State

DT**

***

* 5 V OPTION ONLY

PIN CONNECTIONS

Figure 3. Pin Connections

PAK−5

PIN 1. V

2. RO

Tab, 3. GND

4. EN

5. V

out

DPAK−5 D

PAK−7

PIN 1. V

2. RO

Tab, 3. GND

4. EN

5. V

out

PIN 1. V

2. RO

3. NC

Tab, 4. GND

5. EN

6. DT

7. V

out

PIN FUNCTION DESCRIPTION

Pin No.

DPAK−5

D2PAK−5

Pin No.

D2PAK−7

Pin Name Description

1 1 V

Positive Power Supply Input. Connect 0.1 mF capacitor to ground.

2 2 RO

Reset Output. 30 kW internal Pull−up resistor connected to V

out

. RO goes Low when V

out

drops by more than 7% (typ) from its nominal value (for NCV8772y devices with y = 1,2,3,...)

or more than 10% (typ) from its nominal value (for NCV8772y devices with y = A, B, C,...).

− 3 NC Not Connected

3, TAB 4, TAB GND Power Supply Ground.

4 5 EN Enable Input. Low level disables the IC.

− 6 DT Reset Delay Time Select. Short to GND or connected to V

out

to select time.

5 7 V

out

Regulated Output Voltage. Connect 1 mF capacitor with ESR < 100 W to ground.

1 2 3 4 5 6 7 ... 16 17

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Enable-IT 350 Manuel d'utilisateur Page 2

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