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MC33261 Datasheet

  • MC33261

  • 12頁(yè)

  • Motorola   Motorola

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Order this document by MC34261/D
Power Factor Controllers
The MC34261/MC33261 are active power factor controllers specifically
designed for use as a preconverter in electronic ballast and in off鈥搇ine power
converter applications. These integrated circuits feature an internal startup
timer, a one quadrant multiplier for near unity power factor, zero current
detector to ensure critical conduction operation, high gain error amplifier,
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 input undervoltage
lockout with hysteresis, cycle鈥揵y鈥揷ycle current limiting, and a latch for single
pulse metering. These devices are available in dual鈥搃n鈥搇ine and surface
mount plastic packages.
鈥?/div>
Internal Startup Timer
MC34261
MC33261
POWER FACTOR
CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
One Quadrant Multiplier
Zero Current Detector
Trimmed 2% Internal Bandgap Reference
Totem Pole Output
Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
Pinout Equivalent to the SG3561
Functional Equivalent to the TDA4817
8
1
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO鈥?)
PIN CONNECTIONS
Simplified Block Diagram
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
Zero Current Detector
5
Zero Current
Detect Input
2.5V
Reference
Undervoltage
Lockout
VCC
8
Drive Output
Multiplier,
Latch,
PWM,
Timer,
&
Logic
7
Current Sense
Input
4
ORDERING INFORMATION
Device
Voltage
Feedback
1 Input
Compensation
2
MC34261D
MC34261P
MC33261D
MC33261P
Operating
Temperature Range
TA = 0擄 to +70擄C
TA = 鈥?40擄 to +85擄C
Package
SO鈥?
Plastic DIP
SO鈥?
Plastic DIP
Rev 1
Error Amp
Multiplier
Input 3
Gnd
6
Multiplier
Vref
漏
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1

MC33261 PDF文件相關(guān)型號(hào)

MC34261,MC343261

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