AZ7500BMTR-E1

Pb AZ7500B BB PULSE-WIDTH-MODULATION CONTROL CIRCUITS Lead-Free Description Pin Assignments The AZ7500B is a voltage mode pulse width modulation switching regulator control circuit designed primarily for power supply control. (Top View) The AZ7500B consists of a reference voltage circuit, two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, and an output control circuit. The precision of voltage reference (VREF) is improved up to ±1% through trimming and this provides a better output voltage regulation. The AZ7500B provides for push-pull or single-ended output operation, which can be selected through the output control. 1IN+ 1 16 2IN+ 1IN- 2 15 2IN+ 3 14 REF DTC 4 13 CT 5 12 VCC RT 6 11 C2 GND 7 10 E2 C1 8 9 E1 FEEDBACK The difference between AZ7500B and AZ7500C is that they have 4.95V and 5V reference voltage respectively. The AZ7500B is available in standard packages of SO-16. OUTPUT CTRL Features        SO-16 Stable 4.95V Reference Voltage Trimmed to ±1.0% Accuracy Uncommitted Output TR for 200mA Sink or Source Current Single-End or Push-Pull Operation Selected by Output Control Internal Circuitry Prohibits Double Pulse at Either Output Complete PWM Control Circuit with Variable Duty Cycle On-Chip Oscillator with Master or Slave Operation Totally Lead-Free; RoHS Compliant (Notes 1 & 2) Notes: Applications    SMPS Back Light Inverter Charger 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. Typical Applications Circuit (VI=10V to 40V) 1mH 2A KSA1010 (VO=5V, IO=1A) VO VI(+) 47 12 11 VCC 3 8 C2 1M 0.1 150 FEED BACK C1 5.1k 2 1IN- 14 + REF 2IN+ 50 50V AZ7500B 1IN+ 2IN+ DTC GND 4 7 E1 9 OUTPUT CTRL 13 E2 10 RT 6 47k 15 5.1k 5.1k 1 16 CT 150 5 + 50 10V 50 + 10V 0.001 GND 0.1 VI(-) Pulse Width Modulated Step-down Converter AZ7500B Document number: DS38112 Rev. 2 - 2 1 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Output Function Table Signal for Output Control Output Function VI = GND Single-ended or parallel output VI = VREF Normal push-pull operation Functional Block Diagram OUTPUT CTRL RT CT 6 5 13 Oscillator Pulse-Steering Flip-Flop 8 Q1 Dead-Time Control Comparator DTC 9 D 4 + Error Amplifier 1 1IN + 1IN - 1 + 11 CK 0.12V 10 PWM Comparator FEEDBACK E2 2 12 2IN - E1 C2 Q2 + Error Amplifier 2 2IN + C1 16 Reference Regulator + 15 0.7mA 14 7 VCC REF GND 3 AZ7500B Document number: DS38112 Rev. 2 - 2 2 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Absolute Maximum Ratings (Note 3) Parameter Symbol Rating Unit VCC Supply Voltage (Note 4) 40 V VI Amplifier Input Voltage -0.3 to VCC + 0.3 V VO Collector Output Voltage 40 V IO Collector Output Current 250 mA Package Thermal Impedance (Note 5) 73 C/W RθJA +260 C TSTG Storage Temperature Range -65 to +150 C – ESD Rating (Machine Model) 200 V – Lead Temperature 1.6mm from case for 10 seconds Notes: 3. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. 4. All voltage values are with respect to the network ground terminal. 5. Maximum power dissipation is a function of TJ(max), RθJA and TA. The maximum allowable power dissipation at any allowable ambient temperature is P D= (TJ(max) - TA)/RθJA. Operating at the absolute maximum TJ of +150oC can affect reliability. Recommended Operating Conditions Symbol Parameter Min Typ Max Unit Supply Voltage 7 15 36 V VC1, VC2 Collector Output Voltage – 30 36 V IC1, IC2 Collector Output Current (Each Transistor) – – 200 mA 0.3 – VCC-2 V VCC VI Amplifier Input Voltage IFB Current Into Feedback Terminal – – 0.3 mA IREF Reference Output Current – – 10 mA CT Timing Capacitor 0.00047 0.001 10 µF RT Timing Resistor 1.8 30 500 kΩ fOSC Oscillator Frequency 1.0 40 200 kHz – PWM Input Voltage (Pin 3, 4, 14) 0.3 – 5.3 V TA Operating Free-Air Temperature -40 – +85 C AZ7500B Document number: DS38112 Rev. 2 - 2 3 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Electrical Characteristics (@VCC=20V, TA= +25C, f=10kHz, unless otherwise specified.) Parameters Symbol Conditions Min Typ Max Unit 4.90 4.95 5.0 V 4.85 4.95 5.05 V 2 25 mV Reference Section VREF Output Reference Voltage IREF=1mA o IREF=1mA, TA= -40 to +85 C RLINE Line Regulation VCC = 7V to 36V – RLOAD Load Regulation IREF=1mA to 10mA – 1 15 mV Short-Circuit Output Current VREF = 0V 10 35 50 mA CT=0.001µF, RT=30KΩ – 40 – CT=0.01µF, RT=12KΩ 9.2 10 10.8 9.0 – 12 – – 1 % ISC Oscillator Section fOSC Δf /ΔT Oscillator Frequency Frequency Change with Temperature CT=0.01µF, RT=12KΩ, TA= -40 to +85oC CT=0.01µF, RT=12KΩ, TA= -40 to +85oC kHz Dead-Time Control Section Input Bias Current VCC=15V, V4= 0 to 5.25V – -2 -10 µA Maximum Duty Cycle VCC=15V, V4= 0V, Pin 13= VREF 45 – – % Zero Duty Cycle – 3 3.3 Maximum Duty Cycle 0 – – V3 = 2.5V – 2 10 mV Input Offset Current V3 = 2.5V – 25 250 nA IBIAS Input Bias Current V3 = 2.5V – 0.2 1 µA VCM Common-Mode Input Voltage Range VCC=7V to 36V -0.3 – VCC-2 V 95 – dB 650 – kHz IBIAS D(MAX) VITH Input Threshold Voltage V Error-Amplifier Section VIO IIO Input Offset Voltage GVO Open-Loop Voltage Gain VO =0.5V to 3.5V 70 BW Unity-Gain Bandwidth – – Common-Mode Rejection Ratio – 65 80 – dB Output Sink Current (Feedback) VID = -15mV to -5V, V3 = 0.7V -0.3 -0.7 – mA Output Source Current (Feedback) VID=15mV to 5V, V3 = 3.5V 2 – – mA – 4 4.5 V -0.3 -0.7 – mA CMRR ISINK ISOURCE PWM Comparator Section VITH Input Threshold Voltage Zero duty cycle ISINK Input Sink Current V3 = 0.7V Output Section VCE(SAT) VCC(SAT) IC (OFF) IE(OFF) Common Emitter VE = 0V, IC =200mA – 1.1 1.3 Emitter Follower VCC = 15V, IE = -200mA – 1.5 2.5 VCE = 36V, VCC=36V – 2 100 µA Emitter Off-State Current VCC = VC = 36V, VE = 0 – – -100 µA Supply Current Pin 6 = VREF, VCC=15V – 6 10 mA Common Emitter Common Collector Common Emitter Common Collector – 100 200 ns – 25 100 ns Output Saturation Voltage Collector Off-State Current V Total Device ICC Output Switching Characteristics tR Rise Time tF Fall Time AZ7500B Document number: DS38112 Rev. 2 - 2 4 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Parameter Measurement Information VCC = 20V 12 4 Test Inputs 3 12K 6 5 VCC DTC C1 FEEDBACK E1 RT C2 CT E2 8 150 4W 150 4W Output 1 9 11 Output 2 10 0.01F 1 1IN+ 2 16 15 13 1IN2IN+ 2INOUTPUT CTRL GND REF 14 50K 7 Test Circuit Voltage at C1 VCC Voltage at C2 VCC 0V 0V Voltage at CT Threshold Voltage DTC 0V Threshold Voltage FEEDBACK 0.7V Duty Cycle 0% 0% MAX Voltage Waveforms Figure 1. Operational Test Circuit and Waveforms AZ7500B Document number: DS38112 Rev. 2 - 2 5 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Parameter Measurement Information (Cont.) + Amplifier Under Test VI FEEDBACK + VREF Other Amplifier Figure 2. Error Amplifier Characteristics 20V 68 4W Each Output Circuit tF Output tR 90% CL = 15pF (See Note A) 90% 10% 10% Note A: CL includes probe and jig capacitance. Figure 3. Common-Emitter Configuration 20V Each Output Circuit 90% 90% Output CL = 15pF (See Note A) 68 4W 10% 10% tR tF Note A: CL includes probe and jig capacitance. Figure 4. Emitter-Follower Configuration AZ7500B Document number: DS38112 Rev. 2 - 2 6 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Performance Characteristics Oscillator Frequency vs. RT and CT Error Amplifier Small-Signal Voltage Gain vs. Frequency 100 VCC=20V VCC=20V VO=3V 90 O TA=25 C 80 Voltage Gain (dB) f - Oscillator Frequency (Hz) 100k 0.001F 10k 0.01F 0.1F o TA=25 C 70 60 50 40 30 20 10 1k 1k 10k 100k 0 1M 1 RT - Timing Resistance () 10 100 1k 10k 100k 1M Frequency (Hz) Ordering Information AZ7500B X XX - XX Product Name Package Package Packing E1 M: SO-16 TR: Tape & Reel E1: RoHS Compliant Temperature Range SO-16 o -40 to +85 C Part Number AZ7500BMTR-E1 Marking ID AZ7500BM-E1 Packing 4000/Tape and Reel Marking Information (Top View) First Line: Logo and Marking ID (See Ordering Information) Second Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code th th XX: 7 and 8 Digits of Batch No. AZ7500BM-E1 YWWAXX AZ7500B Document number: DS38112 Rev. 2 - 2 7 of 10 www.diodes.com July 2015 © Diodes Incorporated AZ7500B BB Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SO-16 D D1 7° 0.310(0. 012) 0.510(0. 020) 7° B A 20:1 0.250(0.010) 0.400(0. 016) 1.270(0.050) BSC 9.800(0.386) 10.200(0.402) 1.270(0. 050) 0° 8° R 0.070(0. 003) 0.200(0. 008) R 0.070(0. 003) 0.200(0. 008) B 20:1 8° C 3° 7° 0.200(0. 008) Sφ1.000(0. 039) Depth 0.200(0.008) 8° A 0.150(0.006) ×45 ° 0.400(0.016) 8° C-C 50:1 1.000(0.039) 0.170(0.007) 0.250(0.010) 3.800(0. 150) 4.040(0. 159) 9.5 ° 0.200(0.008) 0.250(0.010) 0.050(0.002) 0.250(0.010) 5.800(0. 228) 6.240(0. 246) C Note: Eject hole, oriented hole and mold mark is optional. D Symbol D1 min(mm) max(mm) min(inch) max(inch) min(mm) max(mm) min(inch) max(inch) Option1 1.350 Option2 AZ7500B Document number: DS38112 Rev. 2 - 2 - 1.750 1.260 0.053 - 0.069 0.050 1.250 . 1.020 8 of 10 www.diodes.com 1.650 0.049 0.065 - 0.040 - July 2015 © Diodes Incorporated AZ7500B BB Suggested Pad Layout (1) Package Type: SO-16 Z G Y X Dimensions Value AZ7500B Document number: DS38112 Rev. 2 - 2 Z (mm)/(inch) 6.900/0.272 E G (mm)/(inch) 3.900/0.154 X (mm)/(inch) 0.650/0.026 9 of 10 www.diodes.com Y (mm)/(inch) 1.500/0.059 E (mm)/(inch) 1.270/0.050 July 2015 © Diodes Incorporated AZ7500B BB IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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