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MC34262DR2G データシート(PDF) 1 Page - ON Semiconductor

部品番号 MC34262DR2G
部品情報  Power Factor Controllers
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2005
November, 2005 − Rev. 9
1
Publication Order Number:
MC34262/D
MC34262, MC33262
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.
Features
Overvoltage Comparator Eliminates Runaway Output Voltage
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
Pb−Free Packages are Available
Figure 1. Simplified Block Diagram
Voltage
Feedback
Input
Multiplier,
Latch,
PWM,
Timer,
&
Logic
Error Amp
Multiplier
Undervoltage
Lockout
2.5V
Reference
Zero Current Detector
5
8
6
7
4
3
2
1
Drive Output
GND
Zero Current
Detect Input
Multiplier
Input
Compensation
VCC
Current Sense
Input
Overvoltage
Comparator
+
1.08 Vref
+
Vref
Quickstart
POWER FACTOR
CONTROLLERS
PIN CONNECTIONS
SOIC−8
D SUFFIX
CASE 751
8
1
8
1
PDIP−8
P SUFFIX
CASE 626
Voltage Feedback
Input
1
2
3
4
8
7
6
5
(Top View)
Compensation
Multiplier Input
Current Sense
Input
VCC
Drive Output
GND
Zero Current
Detect Input
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
ORDERING INFORMATION
x
= 3 or 4
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
G
= Pb−Free Package
G
= Pb−Free Package
MARKING
DIAGRAMS
MC3x262P
AWL
YYWWG
1
8
3x262
ALYW
G
1
8


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