MC44608(2010) 데이터 시트보기 (PDF) - ON Semiconductor

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MC44608
(Rev.:2010)

Few External Components Reliable and Flexible SMPS Controll

ON Semiconductor 

MC44608

Demag

Vi

DMG +

-- 50 mV

/20 mV

1

>24 mA >120 mA

UVLO2

8

9 mA

Startup

Source

1

S1

2

Isense

Latched off Phase

Demag

Logic

Output

Latched off

Phase

Startup

Phase

200 mA

Switching

Phase

0

Startup

Phase

Startup Phase

V CC

Management

Switching Phase

OVP

2 mS

UVLO1

UVLO2

&

OUT Disable

DMG

&

Standby

Standby

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

Standby

&

Regulation

S2

S3

Block

Switching Phase

Figure 1. Representative Block Diagram

6

VCC

5

Driver

4

GND

3

Control

Input

ORDERING INFORMATION

Device

MC44608P40G

MC44608P75G

Switching Frequency

40 kHz

75 kHz

Package

PDIP--8

(Pb--Free)

PDIP--8

(Pb--Free)

Shipping

50 Units / Rail

50 Units / Rail

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Total Power Supply Current

ICC

30

mA

Output Supply Voltage with Respect to Ground

VCC

16

V

All Inputs except Vi

Vinputs

--1.0 to +16

V

Line Voltage Absolute Rating

Vi

500

V

Recommended Line Voltage Operating Condition

Vi

400

V

Power Dissipation and Thermal Characteristics

Maximum Power Dissipation at TA = 85C

Thermal Resistance, Junction--to--Air

Operating Junction Temperature

PD

RθJA

TJ

600

mW

100

C/W

150

C

Operating Ambient Temperature

TA

--25 to +85

C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

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