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MC44604_05 Datasheet(PDF) 1 Page - ON Semiconductor

Part No. MC44604_05
Description  High Safety Pulsed Mode Standby GreenLine TM PWM Controller
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2005
October, 2005 − Rev. 5
1
Publication Order Number:
MC44604/D
MC44604
High Safety Pulsed Mode
Standby GreenLine
t
PWM Controller
The MC44604 is an enhanced high performance controller that is
specifically designed for off−line and dc−to−dc converter applications.
Its high current totem pole output is ideally suited for driving a power
MOSFET.
The MC44604 is an evolution of the MC44603A. Like the
MC44603A, the MC44604 has been optimized to operate with
universal ac mains voltage from 80 V to 280 V. It also offers enhanced
safety and reliable power management thanks to its protection features
(foldback, overvoltage detection, soft−start, accurate demagnetization
detection).
In addition, the MC44604 offers a new efficient way to reduce the
standby operating power by means of a so−called pulsed mode
standby operation of the converter, significantly reducing the
converter consumption in standby mode.
Current Mode Controller
Operation Up to 250 kHz Output Switching Frequency
Inherent Feed Forward Compensation
Latching PWM for Cycle−by−Cycle Current Limiting
Oscillator with Precise Frequency Control
High Flexibility
Externally Programmable Reference Current
Secondary or Primary Sensing
High Current Totem Pole Output
Undervoltage Lockout with Hysteresis
Safety/Protection Features
Overvoltage Protection Facility Against Open Loop
Protection Against Short Circuit on Oscillator Pin
Fully Programmable Foldback
Soft−Start Feature
Accurate Maximum Duty Cycle Setting
Demagnetization (Zero Current Detection) Protection
Internally Trimmed Reference
GreenLine
t Controllert
Low Startup and Operating Current
Pulsed Mode Standby for Low Standby Losses
Low dV/dT for Low EMI
Features
Pb−Free Package is Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Device
Package
Shipping
ORDERING INFORMATION
MC44604P
PDIP−16
25 Units / Rail
PIN CONNECTIONS
116
13
12
11
10
9
2
3
4
5
6
7
8
(Top View)
VCC
VC
Output
Overvoltage
Protection
Current Sense Input
Demagnetization
Detection Input
Rref
Standby
Current Set
GND
Foldback Input
CT
Soft−Start/Dmax/
Voltage Mode
Clamp Error Amp Input
Error Amp Output
15
14 Error Amp Input
Standby Management
http://onsemi.com
MC44604PG
PDIP−16
(Pb−Free)
25 Units / Rail
MARKING DIAGRAM
PDIP−16
P SUFFIX
CASE 648
16
1
MC44604P
AWLYYWWG
16
1
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G
= Pb−Free Package




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