Details, datasheet, quote on part number: MC44603DW
CategoryPower Management => AC-DC Controllers/Converters => AC-DC Switching => Off-Line Controllers
TitleOff-Line Controllers
DescriptionMixed Frequency Mode Greenline PWM Controller , Package: Soic, Pins=16
CompanyON Semiconductor
DatasheetDownload MC44603DW datasheet
Cross ref.Similar parts: UC28023, UC3823, MC44603
Find where to buy


Features, Applications

Fixed Frequency, Variable Frequency, Standby Mode

The is an enhanced high performance controller that is specifically designed for off­line and dc­to­dc converter applications. This device has the unique ability of automatically changing operating modes if the converter output is overloaded, unloaded, or shorted, offering the designer additional protection for increased system reliability. The MC44603 has several distinguishing features when compared to conventional SMPS controllers. These features consist of a foldback facility for overload protection, a standby mode when the converter output is slightly loaded, a demagnetization detection for reduced switching stresses on transistor and diodes, and a high current totem pole output ideally suited for driving a power MOSFET. It can also be used for driving a bipolar transistor in low power converters 150 W). It is optimized to operate in discontinuous mode but can also operate in continuous mode. Its advanced design allows use in current mode or voltage mode control applications. Current or Voltage Mode Controller Operation to 250 kHz Output Switching Frequency


Inherent Feed Forward Compensation Latching PWM for Cycle­by­Cycle Current Limiting Oscillator with Precise Frequency Control

High Flexibility Externally Programmable Reference Current Secondary or Primary Sensing Synchronization Facility High Current Totem Pole Output Undervoltage Lockout with Hysteresis

VCC VC Output Gnd Foldback Input Overvoltage Protection (OVP) Current Sense Input Demag Detection Rref R 15 Frequency Standby Voltage Feedback 14 Input 13 Error Amp Output 12 RPower Standby Soft­Start/Dmax/ 11 Voltage Mode CT 9 Sync Input

Safety/Protection Features Overvoltage Protection Against Open Current and Open Voltage Loop Protection Against Short Circuit on Oscillator Pin Fully Programmable Foldback Soft­Start Feature Accurate Maximum Duty Cycle Setting Demagnetization (Zero Current Detection) Protection Internally Trimmed Reference

GreenLine Controller: Low Power Consumption in Standby Mode Low Startup and Operating Current Fully Programmable Standby Mode Controlled Frequency Reduction in Standby Mode Low dV/dT for Low EMI Radiations

Device MC44603P MC44603DW Operating Temperature Range to +85°C Package Plastic DIP­16 SOP­16L

Rating Total Power Supply and Zener Current Supply Voltage with Respect to Ground (Pin 4) Output Current (Note 1) Source Sink Output Energy (Capacitive Load per Cycle) RF Stby, CT, Soft­Start, Rref, RP Stby Inputs Foldback Input, Current Sense Input, E/A Output, Voltage Feedback Input, Overvoltage Protection, Synchronization Input Synchronization Input High State Voltage Low State Reverse Current Demagnetization Detection Input Current Source Sink Error Amplifier Output Sink Current Power Dissipation and Thermal Characteristics P Suffix, Dual­In­Line, Case 648 Maximum Power Dissipation = 85°C Thermal Resistance, Junction­to­Air DW Suffix, Surface Mount, Case 751G Maximum Power Dissipation = 85°C Thermal Resistance, Junction­to­Air Operating Junction Temperature Operating Ambient Temperature Symbol (ICC + IZ) VC VCC IO(Source) IO(Sink) W Vin ­0.3 to VCC + 0.3 VIH VIL Idemag­ib (Source) Idemag­ib (Sink) IE/A (Sink) VCC V mA Value 30 18 Unit µJ V

NOTES: 1. Maximum package power dissipation limits must be observed. 2. ESD data available upon request.

ELECTRICAL CHARACTERISTICS (VCC and 12 V, [Note 3], Rref = 820 pF, for typical values = 25°C,

for min/max values to +85°C [Note 4], unless otherwise noted.) Characteristic OUTPUT SECTION Output Voltage (Note 5) Low State (ISink = 100 mA) Low State (ISink = 500 mA) High State (ISource = 200 mA) High State (ISource = 500 mA) Output p Voltage g During g Initialization Phase VCC 1.0 V, ISink 10 µA VCC 0V V, ISi Sink 100 µA VCC V, V ISink mA Output Voltage Rising Edge Slew­Rate (CL = 1.0 nF, = 25°C) Output Voltage Falling Edge Slew­Rate (CL = 1.0 nF, = 25°C) ERROR AMPLIFIER SECTION Voltage Feedback Input (VE/A out 2.5 V) Input Bias Current (VFB 2.5 V) Open Loop Voltage Gain (VE/A out 4.0 V) VFB IFB­ib AVOL dB V VOL VOH VOL ­ dVo/dT V/µs V Symbol Min Typ Max Unit

NOTES: 3. Adjust VCC above the startup threshold before setting V. 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 5. VC must be greater than 5.0 V.

ELECTRICAL CHARACTERISTICS (continued) (VCC and 12 V, [Note 3], Rref = 820 pF, for typical values = 25°C, for min/max values to +85°C [Note 4], unless otherwise noted.)

Characteristic ERROR AMPLIFIER SECTION (continued) Unity Gain Bandwidth to +85°C Voltage Feedback Input Line Regulation (VCC 15 V) Output Current Sink (VE/A out 1.5 V, VFB to +85°C Source (VE/A out 5.0 V, VFB to +85°C Output Voltage Swing High State (IE/A out (source) = 0.5 mA, VFB 2.3 V) Low State (IE/A out (sink) = 0.33 mA, VFB 2.7 V) REFERENCE SECTION Reference Output Voltage (VCC 15 V) Reference Current Range (Iref = Vref/Rref, 25 k) Reference Voltage Over Iref Range OSCILLATOR AND SYNCHRONIZATION SECTION Frequency to +85°C Frequency Change with Voltage (VCC 15 V) Frequency Change with Temperature (TA to +85°C) Oscillator Voltage Swing (Peak­to­Peak) Ratio Charge Current/Reference Current to +70°C (VCT to +85°C Fixed Maximum Duty Cycle = Idischarge/(Idischarge + Icharge) Ratio Standby Discharge Current versus IR F Stby (Note to +85°C (Note VR F Stby (IR F Stby = 100 µA) Frequency in Standby Mode (RF Stby (Pin 25 k) Current Range Synchronization Input Threshold Voltage (Note 7) Synchronization Input Current Minimum Synchronization Pulse Width (Note 8) UNDERVOLTAGE LOCKOUT SECTION Startup Threshold Output Disable Voltage After Threshold Turn­On (UVLO to +85°C Reference Disable Voltage After Threshold Turn­On (UVLO 2) Vstup­th 15.4 V fOSC 44.5 44 fOSC/V fOSC/T VOSC(pp) Icharge/Iref 0.37 D Idisch­Stby/ IR F Stby VR F Stby FStby IR F Stby VinthH VinthL ISync­in TSync V kHz µA µs %/V %/°C V ­ kHz Vref Iref Vref BW ­ VFBline­reg ISink ISource V VOH VOL mV mA MHz Symbol Min Typ Max Unit

NOTES: 13. Adjust VCC above the startup threshold before setting V. 14. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 16. Standby is disabled for VR P Stby 25 mV typical. 17. If not used, Synchronization input must be connected to Ground. 18. Synchronization Pulse Width must be shorter than TOSC = 1/fOSC.


Related products with the same datasheet
Some Part number from the same manufacture ON Semiconductor
MC44603DWR2 Mixed Frequency Mode Greenline PWM Controller , Package: Soic, Pins=16
MC44604 High SaFETy Standby Ladder Mode Greenline PWM Controller
MC44604P Up-to-250kHz Flyback PWM Voltage-mode Controller With Programmable Standby Mode, Package: Pdip, Pins=16
MC44605 High SaFETy Greenline PWM Controller For (multi) Synchronized Applications
MC44605P High SaFETy Greenline PWM Controller For (Multi) S , Package: Pdip, Pins=16
MC44608 Few External Components Reliable And Flexible Greenlinetm Very High Voltage PWM Controller
MC44608P100 Few External Components Reliable And Flexible SMPS Controller , Package: Pdip, Pins=8
MC44608P40 Fixed-40kHz Flyback PWM Voltage-mode Controller With 500V Maximum Startup And Programmable Burst-mode Standby, Package: Pdip, Pins=8
MC44608P75 Few External Components Reliable And Flexible SMPS Controller , Package: Pdip, Pins=8
MC4558 Dual Wide Bandwidth Operational Amplifier
MC4741C Quad Differential Input Operational Amplifier
MC54-74HC390 Dual 4-stage Binary Ripple Counter With 2 And Sections
MC54-74HC4016 Quad Analog Switch/ Multiplexer/demultiplexer
MC54HC4016 Quad Analog Switch/multiplexer/demultiplexer
MC54HC4351 Analog Multiplexers/demultiplexers With Address Latch
MC54HC563A Octal 3-state Inverting Transparent Latch- High-performance Silicon-gate CMOS
MC54HC597A 8-bit Serial or Parallel-input/serial-output Shift Register With Input Latch- High-performance Silicon-gate CMOS
MC623 "3v, Dual Trip Point Temperature Sensor"
MC642 PWM Fan Speed Controller With Fault Detection

MC100LVEL11D : 3.3V Ecl 1:2 Differential Fanout Buffer , Package: Soic, Pins=8

MC34262 : Power Power Factor Controller

MC7824BD2TR4 : 1A, 15V,±2% Tolerance, Voltage Regulator, ta = 0°C to +125°C, Package: TO-220, Pins=3

MC78L05A : Three-terminal Low Current Positive Voltage Regulator

MUR490E : 4A 900V Ultrafast Rectifier, Package: Axial Lead, Pins=2

TL431BVP : Adjustable 2.5-36V ±1% Tolerance 1-100mA Shunt Regulator, Ta= -40 to +125°C, Qualified For Automotive Applications, Package: Micro-8, Pins=8

MM3Z51VC : Zener Voltage Regulators

MC74LCX139_0508 : Low-voltage CMOS Unbuffered Hex Inverter With 5 V−tolerant Inputs

SN54-74LS10 : Decade Counter; Divide-by-twelve Counter; 4-bit Binary Counter

BZX84C5V6LT3G : Zener Voltage Regulators

MC74VHC244DTG : Buffers Octal 3-State Driver , Package: Tssop, Pins=20

ADM1029ARQZ-R7 : Pmic - Thermal Management Integrated Circuit (ics) Open Drain Tape & Reel (TR) 3 V ~ 5.5 V; IC SENSOR 2TEMP/FAN CTRL 24QSOP Specifications: Sensing Temperature: 0°C ~ 100°C, External Sensor ; Output Type: Open Drain ; Voltage - Supply: 3 V ~ 5.5 V ; Package / Case: 24-SSOP (0.154", 3.90mm Width) ; Packaging: Tape & Reel (TR) ; Function: Fan Control, Temp Monitor ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compl

Same catergory

FS8S0965RCB : 9A/650V Snychronized Power Switch, Primary Side Regulation. is a Fairchild Power Switch (FPS) that is specially designed for off-line SMPS of CRT monitor with minimal external components. This device is a current mode PWM controller combined with a high voltage power SenseFET in a single package. The PWM controller integrated oscillator to be synchronized with the external sync signal, under voltage lockout,.

ILC812_U : Microprocessor Reset Circuits.

MIC2214 : MIC2214 Portable Power Management ic. The is a dual µCap low dropout regulator with an open-drain driver and power-on reset circuit. The first regulator is capable of sourcing 150mA, while the second regulator can source to 300mA and includes a power-on reset function. The open-drain output is capable of sinking 150mA for LED backlighting applications. Ideal for battery operated applications,.

MM1462BN : op Amplifier 2 Circuit And Shunt Regulator (2.5V). MM1462BN incorporates 2-circuit op amp + shunt regulator (1.25V), and MM1462XN incorporates 2circuit op amp + shunt regulator (2.5V). Supports voltage control and sensors for adapters, etc. 1. Input bias current 2. Power supply voltage removal 3. Current consumption 4. Reference voltage 5. Output inversion voltage fluctuation (VCC=2.5~5V) 30nA typ.

MTSS5070A : Slotted Switch.

NJM2874 : Low Dropout Voltage RegulatorNJM2874/75/76 is a Low Dropout Voltage Regulator Designedfor Cellular Phone Application.advanced Bipolar Technology Achieves Low Noise, Highripple Rejection And Low Quiescent Current..

PT6507A : Plug-in Power Solutions->Non-Isolated->Single Posi. ti PT6507, 1.3Vout 8A 3.3V/5V-Input Adjustable Isr With Short-circuit Protection.

R3111Exxx1x : High Accuracy Detector Threshold 2% Small Size, Highly Efficient.


UC29431 : Adjustable. Uc39431b Precision Adjustable Shunt Regulator. Multiple On-Chip Programmable Reference Voltages 0.4% Initial Accuracy 0.7% Overall Reference Tolerance to 36.0V Operating Supply Voltage and User Programmable Reference 36.0V Operating Supply Voltage Reference Accuracy Maintained For Entire Range of Supply Voltage Superior Accuracy and Easier Compensation for Optoisolator Application Improved Architecture.

NCP3163 : The NCP3163 Series is a performance enhancement to the popular MC33163 and MC34163 monolithic DC-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This controller was specifically designed to be incorporated.

TPS2419 : N+1 And ORing Power Rail Controller With Enable The TPS2419 controller, in conjunction with an external N-channel MOSFET, provides the reverse current protection of an ORing diode with the efficiency of a MOSFET. The TPS2419 can be used to combine multiple power supplies to a common bus in an N+1 configuration, or to combine redundant input power buses.

PT7M7342MTA : µ µ µ µ µP Supervisor Circuits The PT7M7xxx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions..

CM2830AGVIM23 : 300mA CMOS LDO The CM2830/CM2830A family is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (30 Ă‚µA typ.), low dropout voltage, and high output voltage accuracy. Built-in low on-resistance transistor provides low dropout voltage and large output current. A 2.2 Ă‚µF or greater can be used as an output.

0-C     D-L     M-R     S-Z