44608 Просмотр технического описания (PDF) - ON Semiconductor

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Компоненты Описание

производитель

44608

Few External Components Reliable and Flexible SMPS Controller

ON Semiconductor 

MC44608

Demag

Vi

DMG +

− 50 mV

/20 mV

1

>24 mA >120 mA

UVLO2

8

9 mA

Start−up

Source

1

S1

2

Isense

Latched off Phase

Demag

Logic

Output

Latched off

Phase

Start−up

Phase

200 mA

Switching

Phase

0

Start−up

Phase

Start−up Phase

VCC

Management

Switching Phase

OVP

2 mS

UVLO1

UVLO2

&

OUT Disable

DMG

&

Stand−by

Stand−by

Management

OSC

Enable

OSC

OC NOC

Leading Edge

Blanking

Output

&

Clock

+

PWM

−

VPWM

&

&

Thermal

S Shutdown

PWM

Latch

RQ

Buffer

+

CS

−

1V

4 kHz Filter

Latched off Phase

Stand−by

&

Regulation

S2

S3

Block

Switching Phase

Figure 1. Representative Block Diagram

6

VCC

5

Driver

4

GND

3

Control

Input

MAXIMUM RATINGS

Rating

Total Power Supply Current

Output Supply Voltage with Respect to Ground

All Inputs except Vi

Line Voltage Absolute Rating

Recommended Line Voltage Operating Condition

Power Dissipation and Thermal Characteristics

Maximum Power Dissipation at TA = 85°C

Thermal Resistance, Junction−to−Air

Operating Junction Temperature

Operating Ambient Temperature

Symbol

ICC

VCC

Vinputs

Vi

Vi

PD

RqJA

TJ

TA

Value

30

16

−1.0 to +16

500

400

600

100

150

−25 to +85

Unit

mA

V

V

V

V

mW

°C/W

°C

°C

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