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Part: MC34023
Category:
Power Management
-> PWM Controllers
-> Others
Description: High Speed Singleended PWM Controller
Company: ON Semiconductor
Datasheet: Download MC34023 datasheet File size : 813 kB
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Datasheet text preview:
MC34023, MC33023 High Speed Single-Ended PWM Controller
The MC34023 series are high speed, fixed frequency, singleended pulse width modulator controllers optimized for high frequency o p e r a t i o n . They are specifically designed for OffLine and D C t o D C 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 · 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
16 4 5 6 7 Latching PWM Oscillator 13 14 12 Error Amp VC Output Power Ground 15 VCC
http://onsemi.com MARKING DIAGRAMS
16 PDIP16 P SUFFIX CASE 648 16 1 SO16W DW SUFFIX CASE 751G 1 A WL YY WW 1 16 MC33023DW AWLYYWW 1 = Assembly Location = Wafer Lot = Year = Work Week MC34023P AWLYYWW
16
PIN CONNECTIONS
Error Amp Inverting Input 1 Error Amp 2 Noninverting Input Error Amp Output 3 Clock 4 RT 5 CT 6 Ramp 7 Soft-Start 8 (Top View) 16 Vref 15 VCC 14 Output 13 VC 12 Power Ground 11 Current Limit Reference 10 Ground 9 Current Limit/ Shutdown
Vref Clock RT CT
5.1V Reference UVLO
Ramp Error Amp 3 Output Noninverting Input 2 Inverting Input 1 Soft-Start 8
ORDERING INFORMATION
Device MC33023DW Package SO16W SO16W PDIP16 Shipping 47 Units/Rail 1000 Tape & Reel 25 Units/Rail
11 Soft-Start 10 Ground Current 9 Limit Ref Current Limit/ Shutdown
MC33023DWR2 MC34023P
This device contains 176 active transistors.
Figure 1. Simplified Application
© Semiconductor Components Industries, LLC, 2002
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February, 2002 Rev. 5
Publication Order Number: MC34023/D
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 R J A PD R J A 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
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. Thigh = +70°C for MC34023 Tlow = 0°C for MC34023 = 40°C for MC33023 = +105°C for MC33023
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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 3], 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)) TJ = +25°C 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 3.0 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
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Thigh = +70°C for MC34023 Tlow = 0°C for MC34023 = 40°C for MC33023 = +105°C for MC33023
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