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© Semiconductor Components Industries, LLC, 2009
July, 2009 − Rev. 6
1 Publication Order Number:
MC44604/D
MC44604
High Safety Pulsed Mode
Standby GreenLinet
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
GreenLinet Controllert
• Low Startup and Operating Current
• Pulsed Mode Standby for Low Standby Losses
• Low dV/dT for Low EMI
Features
• This is a Pb−Free Device*
*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
PIN CONNECTIONS
116
13
12
11
10
9
2
3
4
5
6
7
8
(Top View)
V
CC
V
C
Output
Overvoltage
Protection
Current Sense Input
Demagnetization
Detection Input
R
ref
Standby
Current Set
GND
Foldback Input
C
T
Soft-Start/D
max
/
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
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 1 Seite 10
- ・ Abmessungen des Paketumrisses on Seite 22
- ・ Teilenummerierungssystem on Seite 1 Seite 22
- ・ Markierungsinformationen on Seite 1
- ・ Blockdiagramm on Seite 2 Seite 11 Seite 12 Seite 13 Seite 16
- ・ Elektrische Spezifikation on Seite 3 Seite 4 Seite 5
