NCV8772

http://onsemi.com

2

Driver

With

Current

Limit

GND

Enable

EN

RO

Thermal

Shutdown

Oscillator

Reference

Erorr Amplifier

Reset Comparator

Timing

Circuit

Reset Driver

Figure 2. Simplified Block Diagram

* D2PAK−7 ONLY

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

DT**

***

*

* 5 V OPTION ONLY

*

*

PIN CONNECTIONS

1

Figure 3. Pin Connections

PIN

2. RO

Tab, 3. GND

4. EN

1

DPAK−5

PIN

2. RO

Tab, 3. GND

4. EN

PIN

2. RO

3. NC

Tab, 4. GND

5. EN

6. DT

1

PIN FUNCTION DESCRIPTION

Pin No.

DPAK−5

D2PAK−5

Pin No.

D2PAK−7

Pin Name

Description

1

1

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

2

2

RO

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

5

7

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