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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–line 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–by–cycle current limiting, and a latch for single pulse metering. These devices are available in dual–in–line and surface mount plastic packages. • Internal Startup Timer
MC34261 MC33261
POWER FACTOR CONTROLLERS
SEMICONDUCTOR TECHNICAL DATA
• • • • • • • •
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–8)
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° to +70°C TA = – 40° to +85°C Package SO–8 Plastic DIP SO–8 Plastic DIP
Rev 1
Error Amp Multiplier Input 3 Gnd 6 Multiplier
Vref
© Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1
MC34261 MC33261
MAXIMUM RATINGS
Rating 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 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 626 Maximum Power Dissipation @ TA = 70°C Thermal Resistance, Junction–to–Air Operating Junction Temperature Operating Ambient Temperature (Note 3) MC34261 MC33261 Storage Temperature Symbol (ICC + IZ) IO Vin Iin 50 –10 Value 30 500 –1.0 to 10 Unit mA mA V mA
PD RθJA PD RθJA TJ TA
800 100 450 178 +150 0 to +70 –40 to +85
mW °C/W mW °C/W °C °C
Tstg
–55 to +150
°C
ELECTRICAL CHARACTERISTICS (VCC = 12 V, 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 ERROR AMPLIFIER Voltage Feedback Input Threshold TA = 25°C TA = Tlow to Thigh (VCC = 12 V to 28 V) Line Regulation (VCC = 12 V to 28 V, TA = 25°C) Input Bias Current (VFB = 0 V) Open Loop Voltage Gain Gain Bandwidth Product (TA = 25°C) Output Source Current (VO = 4.0 V, VFB = 2.3 V) Output Voltage Swing High State (ISource = 0.2 mA, VFB = 2.3 V) Low State (ISink = 0.4 mA, VFB = 2.7 V) MULTIPLIER Dynamic Input Voltage Range Multiplier Input (Pin 3) Compensation (Pin 2) Input Bias Current (VFB = 0 V) Multiplier Gain (VPin 3 = 0.5 V, VPin 2 = VFB + 1.0 V) (Note 2) ZERO CURRENT DETECTOR Input Threshold Voltage (Vin Increasing) Hysteresis (Vin Decreasing) Input Clamp Voltage High State (IDET = 3.0 mA) Low State (IDET = –3.0 mA)
NOTES: 1. Maximum package power dissipation limits must be observed. Pin 4 Threshold Voltage 2. K = VPin 3(VPin 2 – VFB) 3. Tlow = –40°C for MC34261 Thigh = +70°C for MC34261 3. Tlow = –40°C for MC33261 Thigh = +85°C for MC33261
Symbol
Min
Typ
Max
Unit
VFB 2.465 2.44 Regline IIB AVOL GBW ISource VOH VOL – – 65 0.7 0.25 5.0 – 2.5 1.0 –0.3 85 1.0 0.5 5.7 2.1 2.535 2.54 10 –1.0 – – 0.75 – 2.44
V
mV µA dB MHz mA V
V VPin 3 VPin 2 IIB K 0 to 2.5 VFB to (VFB + 1.0) – 0.4 0 to 3.5 VFB to (VFB + 1.5) –0.3 0.62 – – –1.0 0.8 µA 1/V
Vth VH VIH VIL
1.3 40 6.1 0.3
1.6 110 6.7 0.7
1.8 200 – 1.0
V mV V
2
MOTOROLA ANALOG IC DEVICE DATA
MC34261 MC33261
ELECTRICAL CHARACTERISTICS (VCC = 12 V, 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 CURRENT SENSE COMPARATOR Input Bias Current (VPin 4 = 0 V) Input Offset Voltage (VPin 2 = 1.1 V, VPin 3 = 0 V) Delay to Output DRIVE OUTPUT Output Voltage (VCC = 12 V) Low State (ISink = 20 mA) Low State (ISink = 200 mA) High State (ISource = 20 mA) High State (ISource = 200 mA) Output Voltage (VCC = 30 V) High State (ISource = 20 mA, CL = 15 pF) Output Voltage Rise Time (CL = 1.0 nF) Output Voltage Fall Time (CL = 1.0 nF) Output Voltage with UVLO.