iru3037acftr International Rectifier Corp., iru3037acftr Datasheet
iru3037acftr
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iru3037acftr Summary of contents
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FEATURES Synchronous Controller in 8-Pin Package Operating with single 5V or 12V supply voltage Internal 200KHz Oscillator (400KHz for IRU3037A) Soft-Start Function Fixed Frequency Voltage Mode 500mA Peak Output Drive Capability Protects the output when control FET is shorted SOIC ...
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IRU3037/IRU3037A & (PbF) ABSOLUTE MAXIMUM RATINGS Vcc Supply Voltage .................................................. Vc Supply Voltage ...................................................... 30V (not rated for inductive load) Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... CAUTION: Stresses above those listed in "Absolute Maximum ...
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PARAMETER SYM Error Amp Fb Voltage Input Bias Current I Fb Voltage Input Bias Current I Transconductance g Oscillator Frequency Freq Ramp-Amplitude Voltage V Output Drivers Rise Time Fall Time Dead Band Time T Max Duty Cycle T Min Duty ...
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IRU3037/IRU3037A & (PbF) BLOCK DIAGRAM 3V 20uA SS/SD 64uA Max 8 POR 1.25V Error Amp 25K 25K Fb 1 Comp 7 Figure 2 - Simplified block diagram of the IRU3037. THEORY OF OPERATION Introduction The IRU3037 is a fixed frequency, ...
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APPLICATION INFORMATION Design Example: The following example is a typical application for IRU3037, the schematic is Figure 18 on page 14 3.3V OUT OUT ∆V = 100mV OUT f = 200KHz ...
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IRU3037/IRU3037A & (PbF) Assuming the following: ∆V = 1%(V ), Efficiency(η ∆ × ∆t = 3.3µ × 2.93A IN IN η × ...
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For this design, IRF7301 is a good choice. The device provides low on-resistance in a compact SOIC 8-Pin package. The IRF7301 has the following data 20V DSS 0.05Ω DS(ON) The total conduction ...
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IRU3037/IRU3037A & (PbF) Note that this method requires that the output capacitor should have enough ESR to satisfy stability requirements. In general the output capacitor’s ESR generates a zero typically at 5KHz to 50KHz which is essential for an acceptable ...
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For a general solution for unconditionally stability for any type of output capacitors wide range of ESR values we should implement local feedback with a compensa- tion network. The typically used compensation network for voltage-mode controller is shown ...
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IRU3037/IRU3037A & (PbF) 6) Place second pole at the ESR zero ESR 2π × C × Check if R > too small, ...
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TYPICAL PERFORMANCE CHARACTERISTICS IRU3037/IRU3037A & (PbF 3037A V cc vs. Icc @ 470P F , 1150P F and ...
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IRU3037/IRU3037A & (PbF) TYPICAL PERFORMANCE CHARACTERISTICS lta Min ...
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TYPICAL PERFORMANCE CHARACTERISTICS lta Min ...
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IRU3037/IRU3037A & (PbF) TYPICAL APPLICATION Single Supply 5V Input D3 1N4148 C3 C4 1uF 1uF Vcc Vc HDrv U1 SS/SD C8 IRU3037 0.1uF LDrv Comp C9 Fb 680pF Gnd R4 105K Figure 17 - Typical application of IRU3037 in an ...
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TYPICAL APPLICATION Dual Supply, 5V Bus and 12V Bias Input 5V 12V C4 1uF Vc Vcc HDrv U1 SS/SD C7 IRU3037 0.1uF LDrv Comp C8 Fb 2200pF Gnd R2 14K C10 1uF Vc Vcc HDrv U2 SS/SD C13 IRU3037 LDrv ...
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IRU3037/IRU3037A & (PbF) TYPICAL APPLICATION 1.8V to 7.5V / 0.5A Boost Converter Vpwr (1.5V Min) Vc/Vcc R1 20K Q2 R2 2N2222 10K 100pF Q1 2N2222 R3 20K Figure 19 - Typical application of IRU3037 as a boost converter ...
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DEMO-BOARD APPLICATION 5V or 12V to 3.3V @ 10A 1uH 5V or 12V D4 C1 LL4148 33uF 16V Gnd Vcc C8 1uF SS/SD U1 IRU3037 C5 0.1uF Comp C4 2200pF Gnd R3 20K Figure 20 - Demo-board ...
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IRU3037/IRU3037A & (PbF) DEMO-BOARD WAVEFORMS V =5.0V, V =3.3V IN OUT 100 Output Current (A) Figure 21 - Efficiency for IRU3037 Evaluation Board. IRU3037 OUT I ...
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TSSOP Package 1.0 DIA PIN NUMBER SYMBOL DESIG MIN 0. ...
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IRU3037/IRU3037A & (PbF) 8-Pin Surface Mount, Narrow Body PIN NO NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. 20 (S) SOIC Package DETAIL-A 0.38 ± 0.015 8-PIN SYMBOL MIN ...
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PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION F TSSOP Plastic S SOIC, Narrow Body 1 1 Feed Direction Figure A LEADFREE PART MARKING INFORMATION Part number Date code Pin 1 Identifier ? P IR WORLD HEADQUARTERS: 233 Kansas St., El ...