MC44608_06 Datasheet, PDF (2/15 Pages) ON Semiconductor – Few External Components Reliable and Flexible SMPS Controller

MC44608
Demag
Vi
DMG +
− 50 mV
/20 mV
1
>24 mA >120 mA
UVLO2
8
9 mA
Startup
Source
1
S1
2
Isense
Demag
Logic
Output
Latched off
Phase
Startup
Phase
200 mA
Switching
Phase
0
Startup
Phase
Latched off Phase
Startup Phase
Switching Phase
VCC
Management
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
MC44608P40
MC44608P40G
MC44608P75
MC44608P75G
Switching Frequency
40 kHz
75 kHz
Package
PDIP−8
PDIP−8
(Pb−Free)
PDIP−8
PDIP−8
(Pb−Free)
Shipping
50 Units / Rail
50 Units / Rail
50 Units / Rail
50 Units / Rail
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Total Power Supply Current
I_CC
30
mA
Output Supply Voltage with Respect to Ground
V_CC
16
V
All Inputs except Vi
V_inputs
−1.0 to +16
V
Line Voltage Absolute Rating
V_i
500
V
Recommended Line Voltage Operating Condition
V_i
400
V
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation at T_A = 85°C
Thermal Resistance, Junction−to−Air
Operating Junction Temperature
P_D
R_qJA
T_J
600
mW
100
°C/W
150
°C
Operating Ambient Temperature
T_A
−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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