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MC33262P 参数 Datasheet PDF下载

MC33262P图片预览
型号: MC33262P
PDF下载: 下载PDF文件 查看货源
内容描述: 功率因数控制器 [POWER FACTOR CONTROLLERS]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
文件页数/大小: 16 页 / 397 K
品牌: ONSEMI [ ON SEMICONDUCTOR ]
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Order this document by MC34262/D
Power Factor Controllers
The MC34262/MC33262 are active power factor controllers specifically
designed for use as a preconverter in electronic ballast and in off–line power
converter applications. These integrated circuits feature an internal startup
timer for stand–alone applications, a one quadrant multiplier for near unity
power factor, zero current detector to ensure critical conduction operation,
transconductance error amplifier, quickstart circuit for enhanced startup,
trimmed internal bandgap reference, current sensing comparator, and a
totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of an overvoltage
comparator to eliminate runaway output voltage due to load removal, input
undervoltage lockout with hysteresis, cycle–by–cycle current limiting,
multiplier output clamp that limits maximum peak switch current, an RS latch
for single pulse metering, and a drive output high state clamp for MOSFET
gate protection. These devices are available in dual–in–line and surface
mount plastic packages.
Overvoltage Comparator Eliminates Runaway Output Voltage
MC34262
MC33262
POWER FACTOR
CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
Internal Startup Timer
One Quadrant Multiplier
Zero Current Detector
Trimmed 2% Internal Bandgap Reference
Totem Pole Output with High State Clamp
Undervoltage Lockout with 6.0 V of Hysteresis
Low Startup and Operating Current
Supersedes Functionality of SG3561 and TDA4817
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Simplified Block Diagram
Zero Current Detector
5
Zero Current
Detect Input
Voltage Feedback
Input
Compensation
Multiplier Input
Current Sense
Input
1
2
3
4
(Top View)
8 VCC
7 Drive Output
6 Gnd
5 Zero Current
Detect Input
2.5V
Reference
Undervoltage
Lockout
VCC
8
Drive Output
Multiplier,
Latch,
PWM,
Timer,
&
Logic
7
Current Sense
Input
Overvoltage
Comparator
+
Error Amp
1.08 Vref
4
ORDERING INFORMATION
Device
Operating
Temperature Range
TA = 0° to +85°C
TA = – 40° to +105°C
Package
SO–8
Plastic DIP
SO–8
Plastic DIP
Rev 1
Multiplier
Input 3
+
Multiplier
Quickstart
Gnd
6
Compensation
2
Vref
Voltage
Feedback
1 Input
MC34262D
MC34262P
MC33262D
MC33262P
©
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1