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Part: MC34023D
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High Speed Single-Ended PWM Controller
The MC34023 series are high speed, fixed frequency, singleended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for OffLine and DCtoDC converter applications offering the designer a costeffective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, a wide bandwidth error amplifier, a high speed current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cyclebycycle current limiting, and a latch for single pulse metering. The flexibility of this series allows it to be easily configured for either current mode or voltage mode control. · 50 ns Propagation Delay to Output
MC34023 MC33023
16 1
P SUFFIX PLASTIC PACKAGE CASE 648
· · · · · · · · · · · ·
16 1
High Current Totem Pole Output Wide Bandwidth Error Amplifier FullyLatched Logic with Double Pulse Suppression Latching PWM for CycleByCycle Current Limiting SoftStart Control with Latched Overcurrent Reset Input Undervoltage Lockout with Hysteresis Low StartUp Current (500 µA Typ) Internally Trimmed Reference with Undervoltage Lockout 90% Maximum Duty Cycle (Externally Adjustable) Precision Trimmed Oscillator Voltage or Current Mode Operation to 1.0 MHz Functionally Similar to the UC3823
Error Amp Inverting Input 1 Error Amp 2 Noninverting Input Error Amp Output 3 Clock 4 Vref Clock RT CT 16 4 5 6 Oscillator 13 7 VC Output 12 Power Ground 5.1V Reference 15 VCC RT 5 CT 6 Ramp 7 SoftStart 8
DW SUFFIX PLASTIC PACKAGE CASE 751G (SO16L)
PIN CONNECTIONS
16 Vref 15 VCC 14 Output 13 VC 12 Power Ground 11 Current Limit Reference 10 Ground 9 Current Limit/ Shutdown (Top View)
Simplified Application
UVLO
Ramp Error Amp 3 Output Noninverting Input 2 Inverting Input 1 8 SoftStart
14 Error Amp Latching PWM
ORDERING INFORMATION
11 Current 9 Limit Ref Current Limit/ Shutdown 10 Ground
SoftStart
Device MC33023P MC33023DW MC34023P
Operating Temperature Range TA = 40° to +105°C TA = 0° to +70°C
Package Plastic DIP SO16L Plastic DIP
Rev 2
This device contains 176 active transistors.
© Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
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MC34023 MC33023
MAXIMUM RATINGS
Rating Power Supply Voltage Output Driver Supply Voltage Output Current, Source or Sink (Note 1) DC Pulsed (0.5 µs) Current Sense, SoftStart, Ramp, and Error Amp Inputs Error Amp Output and SoftStart Sink Current Clock and RT Output Current Power Dissipation and Thermal Characteristics SO16L Package (Case 751G) Maximum Power Dissipation @ TA = + 25°C Thermal Resistance, JunctiontoAir DIP Package (Case 648) Package (Case 648) Maximum Power Dissipation @ TA = + 25°C Thermal Resistance, JunctiontoAir Operating Junction Temperature Operating Ambient Temperature (Note 2) MC34023 MC33023 Storage Temperature Range Symbol VCC VC IO 0.5 2.0 Vin IO ICO 0.3 to +7.0 10 5.0 V mA mA Value 30 20 Unit V V A
PD RJA PD RJA TJ TA Tstg
862 145 1.25 100 +150 0 to +70 40 to +105 55 to +150
mW °C/W W °C/W °C °C
°C
ELECTRICAL CHARACTERISTICS (VCC = 15 V, RT = 3.65 k, CT = 1.0 nF, for typical values TA = + 25°C, for min/max values TA is
the operating ambient temperature range that applies [Note 2], unless otherwise noted.) Characteristic REFERENCE SECTION Reference Output Voltage (IO = 1.0 mA, TJ = + 25°C) Line Regulation (VCC = 10 V to 30 V) Load Regulation (IO = 1.0 mA to 10 mA) Temperature Stability Total Output Variation over Line, Load, and Temperature Output Noise Voltage (f = 10 Hz to 10 kHz, TJ = + 25°C) Long Term Stability (TA = +125°C for 1000 Hours) Output Short Circuit Current OSCILLATOR SECTION Frequency TJ = + 25°C Line (VCC = 10 V to 30 V) and Temperature (TA = Tlow to Thigh) Frequency Change with Voltage (VCC = 10 V to 30 V) Frequency Change with Temperature (TA = Tlow to Thigh) Sawtooth Peak Voltage Sawtooth Valley Voltage Clock Output Voltage High State Low State kHz fosc fosc/V fosc/T VOSC(P) VOSC(V) VOH VOL 380 370 2.6 0.7 3.9 400 400 0.2 2.0 2.8 1.0 4.5 2.3 420 430 1.0 3.0 1.25 2.9 % % V V V Vref Regline Regload TS Vref Vn S ISC 5.05 4.95 30 5.1 2.0 2.0 0.2 50 5.0 65 5.15 15 15 5.25 100 V mV mV mV/°C V µV mV mA Symbol Min Typ Max Unit
NOTES: 1. Maximum package power dissipation limits must be observed. 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Tlow = 0°C for MC34023 Thigh = +70°C for MC34023 Tlow = 40°C for MC33023 Thigh = +105°C for MC33023
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MOTOROLA ANALOG IC DEVICE DATA
MC34023 MC33023
ELECTRICAL CHARACTERISTICS (VCC = 15 V, RT = 3.65 k, CT = 1.0 nF, for typical values TA = + 25°C, for min/max values TA is the operating ambient temperature range that applies [Note 2], unless otherwise noted.)
Characteristic ERROR AMPLIFIER SECTION Input Offset Voltage Input Bias Current Input Offset Current OpenLoop Voltage Gain (VO = 1.0 V to 4.0 V) Gain Bandwidth Product (TJ = + 25°C) Common Mode Rejection Ratio (VCM = 1.5 V to 5.5 V) Power Supply Rejection Ratio (VCC = 10 V to 30 V) Output Current, Source (VO = 4.0 V) Output Current, Sink (VO = 1.0 V) Output Voltage Swing, High State (IO = 0.5 mA) Output Voltage Swing, Low State (IO = 1 mA) Slew Rate PWM COMPARATOR SECTION Ramp Input Bias Current Duty Cycle, Maximum Duty Cycle, Minimum Zero Duty Cycle Threshold Voltage Pin 3(4) (Pin 7(9) = 0 V) Propagation Delay (Ramp Input to Output, TJ = + 25°C) SOFTSTART SECTION Charge Current (VSoftStart = 0.5 V) Discharge Current (VSoftStart = 1.5 V) CURRENT SENSE SECTION Input Bias Current (Pin 9(12) = 0 V to 4.0 V) Current Limit Comparator Input Offset Voltage (Pin 11(14) = 1.1 V) Current Limit Reference Input Common Mode Range (Pin 11(14)) Shutdown Comparator Threshold Propagation Delay (Current Limit/Shutdown to Output, TJ = + 25°C) OUTPUT SECTION Output Voltage Low State (ISink = 20 mA) (ISink = 200 mA) High State (ISource = 20 mA) (ISource = 200 mA) Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 0.5 mA) Output Leakage Current (VC = 20 V) Output Voltage Rise Time (CL = 1.0 nF, TJ = + 25°C) Output Voltage Fall Time (CL = 1.0 nF, TJ = + 25°C) UNDERVOLTAGE LOCKOUT SECTION StartUp Threshold (VCC Increasing) UVLO Hysteresis Voltage (VCC Decreasing After TurnOn) TOTAL DEVICE Power Supply Current StartUp (VCC = 8.0 V) Operating ICC 0.5 20 1.2 30 mA Vth(on) VH 8.8 0.4 9.2 0.8 9.6 1.2 V V V VOL VOH VOL(UVLO) IL tr tf 13 12 0.25 1.2 13.5 13 0.25 100 30 30 0.4 2.2 1.0 500 60 60 V µA ns ns IIB VIO VCMR Vth tPLH(in/out) 1.0 1.25 1.40 50 15 45 1.25 1.55 80 µA mV V V ns Ichg Idischg 3.0 1.0 9.0 4.0 20 µA mA IIB DC(max) DC(min) Vth tPLH(in/out) 80 1.1 0.5 90 1.25 60 5.0 0 1.4 100 µA % V ns VIO IIB IIO AVOL GBW CMRR PSRR ISource ISink VOH VOL SR 60 4.0 75 85 0.5 1.0 4.5 0 6.0 0.6 0.1 95 8.3 95 110 3.0 3.6 4.75 0.4 12 15 3.0 1.0 5.0 1.0 mV µA µA dB MHz dB dB mA V V/µs Symbol Min Typ Max Unit
NOTES: 1. Maximum package power dissipation limits must be observed. 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Tlow = 0°C for MC34023 Thigh = +70°C for MC34023 Tlow = 40°C for MC33023 Thigh = +105°C for MC33023
MOTOROLA ANALOG IC DEVICE DATA
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