AP34063 UNIVERSAL DC/DC CONVERTER General Description Features * * * * * * * 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. 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 Pin Configuration (1) PDIP-8L (2) SOP-8L (Top View) (Top View) Switch Collector 1 8 Driver Switch Collector 1 8 Driver Switch Emitter 2 7 I pk Sense Switch Emitter 2 7 I pk Sense Timing Capacitor 3 6 V CC Collector Timing Capacitor 3 6 V CC Collector 4 5 Comparator Inverting Input 4 5 Comparator Inverting Input Gnd Gnd Ordering Information AP34063 X X X Package Lead Free Packing S8 : SOP-8L N8 : PDIP-8L Blank: Normal L : Lead-Free - U : Tube - B : Bulk -13 : Taping Device AP34063S8 AP34063N8 AP34063 Rev. 1 Package Packaging Code S8 N8 SOP-8L PDIP-8L Tube/Bulk 13" Tape and Reel Quantity Part Number Quantity Part Number Suffix Suffix 100 -U 2500/Tape & Reel -13 -U 60 1 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Maximum Ratings Parameter Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPin 1 = 40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Power Dissipation SOP: TA = 25C and Thermal PDIP: TA = 25C Characteristics Thermal Resistance Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Notes: Symbol VCC VIR VC (switch) VE (switch) VCE (switch) VC (driver) IC (driver) ISW PD Value 40 -0.3 ~ +40 40 40 40 40 100 1.6 600 Unit V V V V V V mA A mW PD JA TJ TA Tstg 1.25 160 +150 0 ~ +70 -65 ~ +150 W C/W C C C 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 temperature as possible. Electrical Characteristics ( VCC = 5.0V, unless otherwise specified.) Characteristics OSCILLATOR Frequency (VPin 5 = 0V, CT = 1.0nF, TA = 25C) Charge Current (VCC = 5.0V to 40V, TA = 25C) Discharge Current (VCC = 5.0V to 40V, TA = 25C) Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25C) Current Limit Sense Voltage (Ichg = Idischg, TA = 25C) OUTPUT SWITCH (Note 2) Saturation Voltage, Darlington Connection (ISW = 1.0A, Pins 1,8 connected) Saturation Voltage, Darlington Connection (ISW = 1.0A, ID = 50mA, Forced 20) DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25C) Collector Off-State Current (VCE = 40V) COMPARATOR Threshold Voltage TA = 25C TA = 0oC ~ 70oC Threshold Voltage Line Regulation (VCC = 3.0V to 40V) TOTAL DEVICE Supply Current (VCC = 5.0V to 40V, CT =1.0nF, Pin 7 = VCC, VPin 5 > Vth Pin 2 = Gnd, remaining pins open) AP34063 Rev. 1 2 of 11 www.diodes.com Symbol Min Typ Max Unit fosc Ichg Idischg Idischg / Ichg Vipk (sense) 24 24 140 5.2 300 33 30 200 6.5 400 42 42 260 7.5 450 kHz A A mV VCE (sat) - 1.0 1.3 V VCE (sat) - 0.45 0.7 V hFE IC (off) 50 - 75 0.01 100 A Vth - - - V Regline 1.225 1.21 - 1.25 1.4 1.275 1.29 6.0 mV ICC - - 3.5 mA AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Representative Schematic Diagram Drive Collector 8 S Q 7 Comparator + _ Comparator Inverting Input Switch Emitter 3 Timing Capacitor CT 6 VCC 2 Q1 100 Ipk Oscillator Switch Collector Q2 R Ipk Sense 1 1.25V Reference Regulator 5 4 Gnd (Bottom View) AP34063 Rev. 1 3 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Typical Performance Characteristics Figure 1. Vce(sat) versus le Figure 2. Reference Voltage versus Temp. 1.26 Reference Voltage (V) Vce(sat), Saturation Voltage (V) 1.4 1.2 1 0.8 0.6 1.255 1.25 1.245 1.24 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0 10 20 30 Ie, Emitter Current (A) Figure 3. Current Limit Sense Voltage versus Temperature Icc, Supply Current (mA) Current Sense Voltage (mV) 400 380 360 340 20 30 40 50 60 70 80 90 100 3.0 2.5 2.0 1.5 1.0 100 0 5 10 15 20 25 30 35 40 Vcc, Supply Voltage (V) Figure 6.Output Switch On-Off Time versus Oscillator Timing Capacitor 1000 ton-off, Output Switch On-Off Time(us) VCE ( sat), (V) 90 3.5 (oC) 1.8 Vcc=2~10V Pin1,7,8=Vcc Pin3,5=GND TA=25oC Pin2=5 10W 1.6 1.55 1.5 1.45 1.4 100 80 0.0 10 Figure 5. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current 1.65 70 0.5 Temperature 1.7 60 4.0 420 1.75 50 Figure 4. Standby Supply Current versus Supply Voltage 440 320 0 40 Temperature (oC) 300 500 700 900 IE(mA) AP34063 Rev. 1 1100 1300 1500 100 VCC = 5.0V Pin 7 = VCC Pin 5 = GND TA = 25oC ton 10 t off 1 0.1 0.01 4 of 11 www.diodes.com 0.1 1 CT, Oscillator Timing Capacitor ( nF) 10 AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Application Circuit (1) Step-Up Converter 120uH L 8 1 180 S Q Q2 R Q1 7 2 1N5819 Ipk CT Rsc 0.24 Osc 3 6 Vin 12V VCC + 470 uF CT + _ Comp. 1.25V Ref Reg 680 pF 5 4 Vout 28V/200mA R2 10k 56k R1 470uF 1.0uH Vout + + CO 100 Optional Filter Test Line Regulation Conditions Vin = 9V to 12V, IO = 200mA Load Regulation Vin = 12V, IO = 50mA to 200mA Output Ripple Efficiency Vin = 12V, IO = 200mA Vin = 12V, IO = 200mA AP34063 Rev. 1 5 of 11 www.diodes.com Results 20mV = 0.035% 15mV = 0.035% 500mVPP 80% AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Application Circuit ( Continued ) (2) Step-Down Converter 8 1 S Q Q2 R Q1 7 2 Ipk CT Rsc 0.11 1N5819 Osc 3 6 Vin 25V VC CT L C 470 uF + + _ 5 Comp. 1.25V Ref Reg 100uH 470 pF 4 Vout 5.0V/500mA R2 R1 25k 36k 470uF 1.0uH Vout + + CO 100 Optional Filter Line Regulation Test Conditions Vin = 12V to 24V, IO = 500mA Load Regulation Vin = 24V, IO = 50mA to 500mA Output Ripple Efficiency Vin = 24V, IO = 500mA Vin = 24V, IO = 500mA AP34063 Rev. 1 6 of 11 www.diodes.com Results 20mV = 0.2% 5mV = 0.05% 160mVPP 82% AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Application Circuit ( Continued ) (3) Voltage Inverting Converter 8 1 S Q Q2 R Q1 7 2 Ipk 100 uH L CT Rsc 0.26 Osc 3 6 Vin 4.5V to 6.0V VC C + + + _ 470uF Comp. 680 pF 1.25V Ref Reg 5 1N5819 4 Vout -12V/100mA R1 R2 50k 3k 470uF + 1.0uH Vout CO + 100 Optional Filter Test Conditions Results Line Regulation Vin = 4.5V to 6.0V, IO = 100mA 20mV = 0.08% Load Regulation Vin = 5.0V, IO = 20mA to 100mA Output Ripple Efficiency Vin = 5.0V, IO = 100mA Vin = 5.0V, IO = 100mA 30mV = 0.12% 500mVPP 60% AP34063 Rev. 1 7 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Design Formula Table Calculation ton / toff Step-Up Step-Down Voltage-Inverting Vout + VF -Vin (min) vout + vF Ivout l + vF Vin (min) - Vsat vin(min) - vsat - vout 1/f 1/f 1/f ton + toff ton + toff ton + toff ( ton + toff ) toff ton ton +1 Vin - vsat ton +1 toff toff +1 toff ton ( ton +toff ) - toff ( ton +toff ) - toff ( ton + toff ) - toff CT 4.0x10-5ton 4.0x10-5ton 4.0x10-5ton Ipk (switch) 2Iout (max) (ton / toff +1) 2Iout (max) 2Iout (max) (ton / toff +1) Rsc 0.3 / Ipk (switch) 0.3 / Ipk (switch) 0.3 / Ipk (switch) L (min) ( Vin (min) - Vsat ) Ipk (switch) CO 9 ton (max) ( Vin (min) - Vsat -Vout ) Ipk (switch) Iout ton Ipk (switch) ( toff + ton ) Vripple (pp) 8Vripple (pp) ( Vin (min) - Vsat ) ton (max) ton (max) Ipk (switch) 9 Iout ton 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: Vin - 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. 1 8 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Marking Information (1) SOP-8L ( Top View) Logo Part Number AP34063 YY WW X X Blank: Normal L: Lead Free Package G: Green X : Internal code ( Optional) WW: Xth week: 01~52 YY : Year: "01"=2001 "02"=2002 ~ (2) PDIP-8L ( Top View) Logo Part Number AP34063 YY WW X X Blank: Normal L: Lead Free Package G: Green X : Internal code( Optional) WW: Xth week: 01~52 YY : Year: "01"=2001 "02"=2002 ~ Marking Code Table Device Package Marking Code Date Code AP34063 AP34063 SOP-8L PDIP-8L AP34063 AP34063 YYWW YYWW AP34063 Rev. 1 9 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Package Information ( All Dimensions in mm ) 3.70/4.10 Typ 3.90 5.79/6.20 Typ 5.99 (1) SOP-8L 0~8 0.38/0. 71 Typ 1.27 1.27 0.19/0.25 Typ 0.20 0.10/ 0.25 7 (4X) 1.40/1.70 Typ 1.60 4.80/5.30 Typ 5.05 1.30/1.50 Typ 1.45 VIEW "A" 0.015x45 7 (4X) VIEW "A" 0.33/0.51 Typ 0.41 0.10 (2) PDIP-8L AP34063 Rev. 1 10 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER IMPORTANT NOTICE 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. LIFE SUPPORT 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. AP34063 Rev. 1 11 of 11 www.diodes.com AUGUST 2006 (c) Diodes Incorporated