44608P40
器件描述：Few External Components Reliable Flexible GreenLine Very High Voltage PWM Controller
器件厂商：ONSEMI [ON Semiconductor]
文件大小：266.71KB，共16页
Sponsor by e络盟器件资料摘要：
Semiconductor Components Industries, LLC, 1999
January, 2000 – Rev. 2
1 Publication Order Number:
MC44608/D
C0077C0067C0052C0052C0054C0048C0056
C0070C0101C0119C0069C0120C0116C0101C0114C0110C0097C0108C0067C0111C0109C0112C0111C0110C0101C0110C0116C0115
C0082C0101C0108C0105C0097C0098C0108C0101C0097C0110C0100C0070C0108C0101C0120C0105C0098C0108C0101
C0071C0114C0101C0101C0110C0076C0105C0110C0101C0086C0101C0114C0121C0072C0105C0103C0104C0086C0111C0108C0116C0097C0103C0101
C0080C0087C0077C0067C0111C0110C0116C0114C0111C0108C0108C0101C0114
The MC44608 is a high performance voltage mode controller
designed for off–line converters. This high voltage circuit that
integrates the start–up 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 stand–by
management consisting of an effective Pulsed Mode operation. This
technique enables the reduction of the stand–by power consumption to
approximately 1W while delivering 300mW in a 150W SMPS.
• Integrated Start–Up Current Source
• Lossless Off–Line Start–Up
• Direct Off–Line Operation
• Fast Start–Up
General Features
• Flexibility
• Duty Cycle Control
• Undervoltage Lockout with Hysteresis
• On Chip Oscillator Switching Frequency 40, or 75kHz
• Secondary Control with Few External Components
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
GreenLine Controller
• Pulsed Mode Techniques for a Very High Efficiency Low Power
Mode
• Lossless Startup
• Low dV/dT for Low EMI Radiations
Device Switching
Frequency
Shipping
ORDERING INFORMATION
MC44608P40 40kHz
MC44608P75 75kHz
DIP–8
P SUFFIX
CASE 626
1
8
http://onsemi.com
1 8
7
6
5
2
3
4
(Top View)
Demag
I
sense
Control Input
Vi
PIN CONNECTIONS AND
MARKING DIAGRAM
Gnd
V
cc
Driver
44608Pxxx
Package
Plastic
DIP–8
Plastic
DIP–8
50 / Rail
50 / Rail
AW
L
YYWW
AWL = Manufacturing Code
YYWW = Date Code
January, 2000 – Rev. 2
1 Publication Order Number:
MC44608/D
C0077C0067C0052C0052C0054C0048C0056
C0070C0101C0119C0069C0120C0116C0101C0114C0110C0097C0108C0067C0111C0109C0112C0111C0110C0101C0110C0116C0115
C0082C0101C0108C0105C0097C0098C0108C0101C0097C0110C0100C0070C0108C0101C0120C0105C0098C0108C0101
C0071C0114C0101C0101C0110C0076C0105C0110C0101C0086C0101C0114C0121C0072C0105C0103C0104C0086C0111C0108C0116C0097C0103C0101
C0080C0087C0077C0067C0111C0110C0116C0114C0111C0108C0108C0101C0114
The MC44608 is a high performance voltage mode controller
designed for off–line converters. This high voltage circuit that
integrates the start–up 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 stand–by
management consisting of an effective Pulsed Mode operation. This
technique enables the reduction of the stand–by power consumption to
approximately 1W while delivering 300mW in a 150W SMPS.
• Integrated Start–Up Current Source
• Lossless Off–Line Start–Up
• Direct Off–Line Operation
• Fast Start–Up
General Features
• Flexibility
• Duty Cycle Control
• Undervoltage Lockout with Hysteresis
• On Chip Oscillator Switching Frequency 40, or 75kHz
• Secondary Control with Few External Components
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
GreenLine Controller
• Pulsed Mode Techniques for a Very High Efficiency Low Power
Mode
• Lossless Startup
• Low dV/dT for Low EMI Radiations
Device Switching
Frequency
Shipping
ORDERING INFORMATION
MC44608P40 40kHz
MC44608P75 75kHz
DIP–8
P SUFFIX
CASE 626
1
8
http://onsemi.com
1 8
7
6
5
2
3
4
(Top View)
Demag
I
sense
Control Input
Vi
PIN CONNECTIONS AND
MARKING DIAGRAM
Gnd
V
cc
Driver
44608Pxxx
Package
Plastic
DIP–8
Plastic
DIP–8
50 / Rail
50 / Rail
AW
L
YYWW
AWL = Manufacturing Code
YYWW = Date Code