MC33363A データシートの表示（PDF） - ON Semiconductor

部品番号

コンポーネント説明

メーカー

MC33363A

High Voltage Switching Regulator

ON Semiconductor 

MC33363A

PIN FUNCTION DESCRIPTION

Pin

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 1

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 3

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 4, 5, 12, 13

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 6

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 7

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 8

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 9

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 10

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 11

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 14, 15

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 16

Function

Startup Input

−

VCCCC

GND

RT

CT

Regulator Output

Compensation

Voltage Feedback

Input

Overvoltage

Protection Input

−

Power Switch

Drain

Description

This pin connects directly to the rectified ac line voltage source. Internally Pin 1 is tied to the drain

of a high voltage startup MOSFET. During startup, the MOSFET supplies internal bias, and

charges an external capacitor that connects from the VCC pin to ground.

This pin has been omitted for increased spacing between the rectified ac line voltage on Pin 1 and

the VCC potential on Pin 3.

This is the positive supply voltage input. During startup, power is supplied to this input from Pin 1.

When VCC reaches the UVLO upper threshold, the startup MOSFET turns off and power is

supplied from an auxiliary transformer winding.

These pins are the control circuit grounds. They are part of the IC lead frame and provide a

thermal path from the die to the printed circuit board.

Resistor RT connects from this pin to ground. The value selected will program the Current Limit

Comparator threshold and affect the Oscillator frequency.

Capacitor CT connects from this pin to ground. The value selected, in conjunction with resistor RT,

programs the Oscillator frequency.

This 6.5 V output is available for biasing external circuitry. It requires an external bypass capacitor

of at least 1.0 mF for stability.

This pin is the Error Amplifier output and is made available for loop compensation. It can be used

as an input to directly control the PWM Comparator.

This is the inverting input of the Error Amplifier. It has a 2.6 V threshold and normally connects

through a resistor divider to the converter output, or to a voltage that represents the converter

output.

This input provides runaway output voltage protection due to an external component or

connection failure in the control loop feedback signal path. It has a 2.6 V threshold and normally

connects through a resistor divider to the converter output, or to a voltage that represents the

converter output.

These pins have been omitted for increased spacing between the high voltages present on the

Power Switch Drain, and the ground potential on Pins 12 and 13.

This pin is designed to directly drive the converter transformer and is capable of switching a

maximum of 700 V and 1.0 A.

ORDERING INFORMATION

Device

Package

Shipping†

MC33363ADW

SOIC−16WB

47 Units / Rail

MC33363ADWG

SOIC−16WB

(Pb−Free)

47 Units / Rail

MC33363ADWR2

SOIC−16WB

1000 / Tape & Reel

MC33363ADWR2G

SOIC−16WB

(Pb−Free)

1000 / Tape & Reel

MC33363AP

PDIP−16

25 Units / Rail

MC33363APG

PDIP−16

(Pb−Free)

25 Units / Rail

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

http://onsemi.com

7

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