AP34063 DIODES | Alldatasheet

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Technical content

AP34063 Rev. 2 1 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Lead-free

  • Operation from 3.0V to 40V Input
  • Low Standby Current
  • Current Limiting
  • Output Switch Current to 1.6A
  • Output Voltage Adjustable
  • Frequency Operation to 100 kHz
  • Precision 2% Reference
  • 8-pin SOP, PDIP package
  • Lead Free Finish/RoHS Compliant for Lead Free and “Green” products (Note 1)
  • SOP-8L: Available in “Green” Molding Compound (No Br, Sb) The AP34063 Series is a monolithic control circuit containing the primary functions required for DC-to-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 series is specifically designed for incorporating in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components. -U : Tube AP34063 X X X Package PackingLead Free L : Lead Free (Note 2) -13 : Taping S8 : SOP -8L N8 : PDIP -8L G : Green 2. PDIP-8L is available in “Lead Free” only. Note: 3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Features Description

Ordering Information

Tube/Bulk 13” Tape and Reel Device Package Code Packaging (Note 3) Quantity Part Number Suffix Quantity Part Number Suffix AP34063S8 S8 SOP-8L 100 - U 2500/Tape & Reel -13 AP34063N8 N8 PDIP-8L 60 - U NA NA

AP34063 Rev. 2 2 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated (1) PDIP-8L (2) SOP-8L VCC Comparator Inverting Input Driver Collector I pk Sense Switch Collector Switch Emitter Timing Capacitor Gnd (Top View) VCC Comparator Inverting Input Driver Collector I pk Sense Switch Collector Switch Emitter Timing Capacitor Gnd (Top View) Maximum Ratings Parameter Symbol Value Unit Power Supply Voltage V CC 40 V Comparator Input Voltage Range V IR -0.3 ~ +40 V Switch Collector Voltage V C (switch) 40 V Switch Emitter Voltage (VPin 1 = 40V) V E (switch) 40 V Switch Collector to Emitter Voltage V CE (switch) 40 V Driver Collector Voltage V C (driver) 40 V Driver Collector Current I C (driver) 100 mA Switch Current I SW 1.6 A SOP: TA = 25°C PD 600 mW PDIP: TA = 25°C PD 1.25 W Power Dissipation and Thermal Characteristics Thermal Resistance θ JA 160 °C/W Maximum Junction Temperature T MJ +150 °C Operating Junction Temperature Range TOP 0 ~ +105 °C Storage Temperature Range T stg -65 ~ +150 °C Note: 4. Maximum package power dissipation limits must be observed. 5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. Pin Assignment

AP34063 Rev. 2 3 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Electrical Characteristics ( VCC = 5.0V, unless otherwise specified.) Characteristics Symbol Min Typ Max Unit OSCILLATOR Frequency (VPin 5 = 0V, CT = 1.0nF, TA = 25°C) fosc 24 33 42 kHz Charge Current (VCC = 5.0V to 40V, TA = 25°C) Ichg 24 30 42 µA Discharge Current (VCC = 5.0V to 40V, TA = 25°C) Idischg 140 200 260 µA Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C) Idischg / Ichg 5.2 6.5 7.5 - Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C) Vipk (sense) 300 400 450 mV OUTPUT SWITCH (Note 3) Saturation Voltage, Darlington Connection ( I SW = 1.0A, Pins 1,8 connected) VCE (sat) - 1.0 1.3 V Saturation Voltage, Darlington Connection ( I SW = 1.0A, ID = 50mA, Forced ß ≈ 20) VCE (sat) - 0.45 0.7 V DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25°C) hFE 50 75 - - Collector Off-State Current (VCE = 40V) I C (off) - 0.01 100 µA COMPARATOR Vth - - - V - 1.225 1.25 1.275 - Threshold Voltage TA = 25°C TA = 0oC ~ 70oC - 1.21 - 1.29 - Threshold Voltage Line Regulation (VCC = 3.0V to 40V) Reg line - 1.4 6.0 mV TOTAL DEVICE Supply Current (VCC = 5.0V to 40V, CT =1.0nF, Pin 7 = VCC, V Pin 5 > Vth Pin 2 = Gnd, remaining pins open) ICC - - 3.5 mA 1.25V Reference Regulator Ipk Oscillator CT R SQ 100 Comparator (Bottom View) Gnd Timing Capacitor Switch Emitter Switch Collector Drive Collector Ipk Sense VCC Comparator Inverting Input Representative Schematic Diagram

AP34063 Rev. 2 5 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Application Circuit (1) Step-Up Converter 1.25V Ref Reg Ipk CT R SQ Comp.+ VCC Osc 180 470 uF Vin 12V Rsc 0.24 R1 10k 56k CO 28V/200mA Vout 100 Vout Optional Filter L 120uH CT 680 pF 1N5819 470uF 1.0uH Test Conditions Results Line Regulation V in = 9V to 12V, IO = 200mA 20mV = ±0.035% Load Regulation V in = 12V, IO = 50mA to 200mA 15mV = ±0.035% Output Ripple V in = 12V, IO = 200mA 500mV PP Efficiency V in = 12V, IO = 200mA 80%

AP34063 Rev. 2 6 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Application Circuit ( Continued ) (2) Step-Down Converter 1.25V Ref Reg Ipk CT R SQ Comp.+ VC C Osc 470 uF Vin 25V Rsc 0.11 R1 25k 36k CO 5.0V/500mA Vout 100 Vout Optional Filter CT 470 pF L 100uH 1N5819 470uF 1.0uH Test Conditions Results Line Regulation V in = 12V to 24V, IO = 500mA 20mV = ±0.2% Load Regulation V in = 24V, IO = 50mA to 500mA 5mV = ±0.05% Output Ripple V in = 24V, IO = 500mA 160mV PP Efficiency V in = 24V, IO = 500mA 82%

AP34063 Rev. 2 7 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Application Circuit ( Continued ) (3) Voltage Inverting Converter 1.25V Ref Reg Ipk CT R SQ Comp.+ VC C Osc 470uF Vin 4.5V to 6.0V Rsc 0.26 R2 50k 3k CO -12V/100mA Vout 100 Vout Optional Filter 680 pF L 1N5819 470uF 1.0uH 100 uH + + Test Conditions Results Line Regulation V in = 4.5V to 6.0V, IO = 100mA 20mV = ±0.08% Load Regulation V in = 5.0V, IO = 20mA to 100mA 30mV = ±0.12% Output Ripple V in = 5.0V, IO = 100mA 500mV PP Efficiency V in = 5.0V, IO = 100mA 60%

AP34063 Rev. 2 8 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Design Formula Table Calculation Step-Up Step-Down Voltage-Inverting Vout + VF -Vin (min) v out + vF Iv out l + vF ton / toff V in (min) - Vsat v in(min) - vsat - vout V in - vsat ( ton + toff ) 1/f 1/f 1/f ton + toff t on + toff t on + toff ton t on t on toff toff toff toff ton ( t on +toff ) - toff ( t on +toff ) - toff ( t on + toff ) - toff CT 4.0×10-5 t on 4.0 ×10-5 t on 4.0 ×10-5 t on Ipk (switch) 2I out (max) (ton / toff +1) 2I out (max) 2I out (max) (ton / toff +1) Rsc 0.3 / I pk (switch) 0.3 / I pk (switch) 0.3 / I pk (switch) ( Vin (min) – Vsat ) ( Vin (min) – Vsat -Vout ) ( V in (min) – Vsat ) L (min) Ipk (switch) ton (max) Ipk (switch) ton (max) I pk (switch) ton (max) Iout ton I pk (switch) ( toff + ton )I out ton CO 9 Vripple (pp) 8V ripple (pp) Vripple (pp) Vsat = Saturation voltage of the output switch. VF = Forward voltage drop of the output rectifier. The following power supply characteristics must be chosen: V in - Nominal input voltage. Vout - Desired output voltage, |Vout| = 1.25 (1+R2/R1) Iout - Desired output current. fmin - Minimum desired output switching frequency at the selected values of Vin and Io. Vripple(pp) - Desired peak-to-peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and load regulation.

AP34063 Rev. 2 9 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Marking Information (1) SOP-8L Year: "01" =2001 "02" =2002 Xth week: 01~52 AP34063 (Top view) YY WW X X Part Number Logo G : Green Internal code L : Lead Free (2) PDIP-8L AP34063 (Top view) YY WW X X Part Number Logo Xth week : 01 ~ 52 Year L : Lead Free Internal Code : " 01 " = 2001 02 " = 2002 Marking Code Table Device Package Marking Code Date Code AP34063 SOP-8L AP34063 YYWW AP34063 PDIP-8L AP34063 YYWW

AP34063 Rev. 2 10 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated Package Information ( All Dimensions in mm ) (1) SOP-8L 1.27typ 0.3/0.5 7°~9° 4.80/5.30 3.70/4.10 5.79/6.20 0.20typ 7°~9° 3.70/4.10 0.38/1.27 0.08/0.25 Gauge Plane 0.254 Seating Plane 0.35max. 45° Detail "A" Detail "A" 1.30/1.50 1.75max. (2) PDIP-8L

AP34063 Rev. 2 11 of 11 MARCH 2007 www.diodes.com © Diodes Incorporated IMPORTANT NOTICE LIFE SUPPORT Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.