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MC44608P75

P1-P3P4-P6P7-P9P10-P12P13-P15
Semiconductor Components Industries, LLC, 2010
December, 2010 -- Rev. 10
1
Publication Order Number:
MC44608/D
MC44608
Few External Components
Reliable and Flexible
SMPS Controller
The MC44608 is a high performance voltage mode controller
designed for off--line converters. This high voltage circuit that
integrates the startup current source and the oscillator capacitor,
requires few external components while offering a high flexibility and
reliability.
The device also features a very high efficiency standby management
consisting of an effective Pulsed Mode operation. This technique
enables the r eduction of the standby power consumption to
approximately 1.0 W while delivering 300 mW in a 150 W SMPS.
General Features
Integrated Startup Current Source
Lossless Off--Line Startup
Direct Off--Line Operation
Fast Startup
Flexibility
Duty Cycle Control
Undervoltage Lockout with Hysteresis
On Chip Oscillator Switching Frequency 40 or 75
Secondary Control with Few External Components
These are Pb--Free Devices*
Protections
Maximum Duty Cycle Limitation
Cycle by Cycle Current Limitation
Demagnetization (Zero Current Detection) Protection
“Over V
CC
Protection” Against Open Loop
Programmable Low Inertia Over Voltage Protection
Against Open Loop
Internal Thermal Protection
SMPS Controller
Pulsed Mode Techniques for a Very High Efficiency
Low Power Mode
Lossless Startup
Low dV/dT for Low EMI Radiations
*For additional information on our Pb--Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
1 8
7
6
5
2
3
4
Demag
I
sense
Control Input
V
i
PIN CONNECTIONS
GND
V
CC
Driver
(Top View)
http://onsemi.com
PDIP--8
P SUFFIX
CASE 626
1
8
MC44608Pxx
AWL
YYWWG
1
8
MC44608Pxx = Device Code
xx = 40 or 75
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb--Free Package
MARKING DIAGRAM
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
MC44608
http://onsemi.com
2
+
--
+
--
+
--
DMG
Demag
Logic
Output
Startup
Phase
Switching
Phase
Latched off
Phase
1V
4 kHz Filter
Regulation
Block
Switching Phase
S2 S3
&
Latched off Phase
Standby
Thermal
DMG
OUT Disable
OVP
UVLO1
Switching Phase
Startup Phase
Latched off Phase
UVLO2
9mA
Startup
CC
Buffer
PWM
Q
R
S
&
&
PWM
VPWM
&
OSC
OSC
Clock
Standby
Leading Edge
S1
10
&
Standby
18
6
5
4
3
2
Demag Vi
Isense
Control
GND
Driver
V
Input
CC
Shutdown
Latch
UVLO2
Management
V
&
Source
Management
Enable
Blanking
Output
CS
2Sm
>120 Am
>24 Am
50 mV
/20 mV
NOCOC
200 Am
Startup
Phase
Figure 1. Representative Block Diagram
ORDERING INFORMATION
Device Switching Frequency Package Shipping
MC44608P40G
40 kHz
PDIP--8
(Pb--Free)
50 Units / Rail
MC44608P75G
75 kHz
PDIP--8
(Pb--Free)
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
--1.0to+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
=85C P
D
600 mW
Thermal Resistance, Junction--to--Air
R
θ
JA
100 C/W
Operating Junction Temperature T
J
150 C
Operating Ambient Temperature T
A
-- 2 5 t o + 8 5 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 s tresses above the Recommended Operating Conditions may affect
device reliability.
MC44608
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
Characteristic Symbol Min Typ Max Unit
OUTPUT SECTION
Output Resistor
Ω
Sink Resistance R
OL
5.0 8.5 15
Source Resistance R
OH
-- 15 --
Output Voltage Rise Time (from 3.0 V up to 9.0 V) (Note 1) t
r
-- 50 -- ns
Output Voltage Falling Edge Slew--Rate (from 9.0 V down to 3.0 V) (Note 1) t
f
-- 50 -- ns
CONTROL INPUT SECTION
Duty Cycle @ I
pin3
=2.5mA d
2mA
-- -- 2.0 %
Duty Cycle @ I
pin3
=1.0mA d
1mA
36 43 48 %
Control Input Clamp Voltage (Switching Phase) @ I
pin3
=--1.0mA 4.75 5.0 5.25 V
Latched Phase Control Input Voltage (Standby) @ I
pin3
= +500 mA
V
LP--stby
3.4 3.9 4.3 V
Latched Phase Control Input Voltage (Standby) @ I
pin3
=+1.0mA V
LP--stby
2.4 3.0 3.7 V
current sense section
Maximum Current Sense Input Threshold
V
CS--th
0.95 1.0 1.05 V
Input Bias Current I
B--cs
-- 1 . 8 -- 1.8
mA
Standby Current Sense Input Current I
CS--stby
180 200 220
mA
Startup Phase Current Sense Input Current I
CS--stup
180 200 220
mA
Propagation Delay (Current Sense Input to Output @ V
TH
TMOS=3.0V) T
PLH(In/Out)
-- 220 -- ns
Leading Edge Blanking Duration MC44608P40 T
LEB
-- 480 -- ns
Leading Edge Blanking Duration MC44608P75 T
LEB
-- 250 -- ns
Leading Edge Blanking + Propagation Delay MC44608P40 T
DLY
500 680 900 ns
Leading Edge Blanking + Propagation Delay MC44608P75 T
DLY
370 470 570 ns
oscillator section
Normal Operation Frequency MC44608P40
f
osc
36 40 44 kHz
Normal Operation Frequency MC44608P75 f
osc
68 75 82 kHz
Maximum Duty Cycle @ f = f
osc
d
max
78 82 86 %
OVERvoltage section
Quick OVP Input Filtering (R
demag
= 100 kΩ)
T
filt
-- 250 -- ns
Propagation Delay (I
demag
>I
ovp
to output low) T
PHL(In/Out)
-- 2.0 --
ms
Quick OVP Current Threshold I
OVP
105 120 140
mA
Protection Threshold Level on V
CC
V
CC--OVP
14.8 15.3 15.8 V
Minimum Gap Between V
CC--OVP
and V
stup-- th
V
CC--OVP
-- V
stup
1.0 -- -- V
1. This parameter is measured using 1.0 nF connected between the output and the ground.
P1-P3P4-P6P7-P9P10-P12P13-P15

MC44608P75

Mfr. #:
Buy MC44608P75
Manufacturer:
ON Semiconductor
Description:
Switching Controllers 75KHz High Voltage
Lifecycle:
New from this manufacturer.
Delivery:
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