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Motorola Electronic Components Datasheet

MC33262 Datasheet

POWER FACTOR CONTROLLERS

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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
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
Simplified Block Diagram
Zero Current Detector
2.5V
Reference
Undervoltage
Lockout
Zero Current
5 Detect Input
VCC
8
Order this document by MC34262/D
MC34262
MC33262
POWER FACTOR
CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Voltage Feedback
Input
1
Compensation 2
8 VCC
7 Drive Output
Multiplier Input 3
Current Sense 4
Input
6 Gnd
5 Zero Current
Detect Input
(Top View)
Multiplier
Input 3
Gnd 6
Multiplier,
Latch,
PWM,
Timer,
&
Logic
Multiplier
Overvoltage
Comparator
+
1.08 Vref
Error Amp
+
Vref
Quickstart
Compensation 2
MOTOROLA ANALOG IC DEVICE DATA
Drive Output
7
Current Sense
4 Input
Voltage
Feedback
1 Input
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC34262D
MC34262P
TA = 0° to +85°C
SO–8
Plastic DIP
MC33262D
SO–8
TA = – 40° to +105°C
MC33262P
Plastic DIP
© Motorola, Inc. 1996
Rev 1
1


Motorola Electronic Components Datasheet

MC33262 Datasheet

POWER FACTOR CONTROLLERS

No Preview Available !

MC34262 MC33262
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 1)
Current Sense, Multiplier, and Voltage Feedback Inputs
Zero Current Detect Input
High State Forward Current
Low State Reverse Current
(ICC + IZ)
IO
Vin
Iin
30
500
–1.0 to +10
50
–10
mA
mA
V
mA
Power Dissipation and Thermal Characteristics
P Suffix, Plastic Package, Case 626
Maximum Power Dissipation @ TA = 70°C
Thermal Resistance, Junction–to–Air
D Suffix, Plastic Package, Case 751
Maximum Power Dissipation @ TA = 70°C
Thermal Resistance, Junction–to–Air
Operating Junction Temperature
Operating Ambient Temperature (Note 3)
MC34262
MC33262
PD
RθJA
PD
RθJA
TJ
TA
800 mW
100 °C/W
450
178
+150
0 to + 85
– 40 to +105
mW
°C/W
°C
°C
Storage Temperature
Tstg – 65 to +150 °C
ELECTRICAL CHARACTERISTICS (VCC = 12 V (Note 2), for typical values TA = 25°C, for min/max values TA is the operating ambient
temperature range that applies [Note 3], unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max Unit
ERROR AMPLIFIER
Voltage Feedback Input Threshold
TA = 25°C
TA = Tlow to Thigh (VCC = 12 V to 28 V)
VFB V
2.465 2.5 2.535
2.44 — 2.54
Line Regulation (VCC = 12 V to 28 V, TA = 25°C)
Input Bias Current (VFB = 0 V)
Transconductance (TA = 25°C)
Output Current
Source (VFB = 2.3 V)
Sink (VFB = 2.7 V)
Regline
IIB
gm
IO
80
1.0
– 0.1
100
10
10
10
– 0.5
130
mV
µA
µmho
µA
Output Voltage Swing
High State (VFB = 2.3 V)
Low State (VFB = 2.7 V)
V
VOH(ea)
5.8
6.4
VOL(ea)
1.7
2.4
OVERVOLTAGE COMPARATOR
Voltage Feedback Input Threshold
VFB(OV)
1.065 VFB
1.08 VFB
1.095 VFB
V
MULTIPLIER
Input Bias Current, Pin 3 (VFB = 0 V)
Input Threshold, Pin 2
Dynamic Input Voltage Range
Multiplier Input (Pin 3)
Compensation (Pin 2)
Multiplier Gain (VPin 3 = 0.5 V, VPin 2 = Vth(M) + 1.0 V) (Note 4)
IIB
Vth(M)
VPin 3
VPin 2
K
— – 0.1
1.05 VOL(EA) 1.2 VOL(EA)
0 to 2.5
0 to 3.5
Vth(M) to
Vth(M) to
(Vth(M) + 1.0) (Vth(M) + 1.5)
0.43 0.65
– 0.5
0.87
µA
V
V
1/V
ZERO CURRENT DETECTOR
Input Threshold Voltage (Vin Increasing)
Vth 1.33 1.6 1.87 V
Hysteresis (Vin Decreasing)
Input Clamp Voltage
High State (IDET = + 3.0 mA)
Low State (IDET = – 3.0 mA)
VH 100 200 300 mV
V
VIH 6.1
6.7
VIL 0.3 0.7 1.0
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33262
Description POWER FACTOR CONTROLLERS
Maker Motorola
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MC33262 Datasheet PDF






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