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參數資料
| 型號： | 44608P40 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Few External Components Reliable Flexible GreenLine Very High Voltage PWM Controller |
| 中文描述： | 很少的外部元件的可靠靈活二七二三六七六七高電壓PWM控制器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 266K |
| 代理商： | 44608P40 |
Semiconductor Components Industries, LLC, 1999
January, 2000 – Rev. 2
1
Publication Order Number:
MC44608/D
MC44608
FewExternal Components
Reliable and Flexible
GreenLine Very High Voltage
PWM Controller
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 VCC Protection” Against Open Loop
ProgrammableLowInertiaOverVoltageProtectionAgainstOpenLoop
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
Isense
Control Input
Vi
PIN CONNECTIONS AND
MARKING DIAGRAM
Gnd
Vcc
Driver
44608Pxxx
Package
Plastic
DIP–8
Plastic
DIP–8
50 / Rail
AW
L
YYWW
AWL = Manufacturing Code
YYWW = Date Code
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