AP34063 UNIVERSAL DC/DC CONVERTER Description Features • • • • • • • • • • 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 Lead Free packages: SOP-8L and PDIP-8L (Note 1) SOP-8L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 2) 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. Application Circuit (1) Step-Up Converter 120uH L 8 1 180 S Q Q2 R Q1 7 2 B240 Ipk CT Rsc 0.24 Osc 3 6 Vin 12V V CC + 470 uF CT + _ Comp. 1.25V Ref Reg 680 pF 5 4 R1 1.0uH V out 28V/200mA R2 10k 56k 470uF V out + + CO 100 Optional Filter Line Regulation Test Conditions Vin = 9V to 12V, IO = 200mA 20mV = ±0.035% Load Regulation Vin = 12V, IO = 50mA to 200mA 15mV = ±0.035% Output Ripple Efficiency Vin = 12V, IO = 200mA Vin = 12V, IO = 200mA 500mVPP 80% AP34063 Rev. 5 DS31004 1 of 11 www.diodes.com Results JULY 2009 © 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 B240 Osc 6 Vin 25V 3 VC CT L C 470 uF + + _ Comp. 1.25V Ref Reg 5 100uH 470 pF 4 Vout 5.0V/500mA R2 R1 25k 36k 470uF + 1.0uH Vout + CO 100 Optional Filter Test Line Regulation Conditions Vin = 12V to 24V, IO = 500mA 20mV = ±0.2% Load Regulation Vin = 24V, IO = 50mA to 500mA 5mV = ±0.05% Output Ripple Efficiency Vin = 24V, IO = 500mA Vin = 24V, IO = 500mA 160mVPP 82% AP34063 Rev. 5 DS31004 2 of 11 www.diodes.com Results JULY 2009 © 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 B240 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 30mV = ±0.12% Output Ripple Efficiency Vin = 5.0V, IO = 100mA Vin = 5.0V, IO = 100mA 500mVPP 60% AP34063 Rev. 5 DS31004 3 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Ordering Information AP 34063 XX X - X Lead-free Packing Package Lead Free S8 : SOP-8L N8 : PDIP-8L L : Lead Free (Note 1) G : Green Device Package Code Packaging (Note 3) AP34063S8L-13 AP34063S8G-13 AP34063N8L-U S8 S8 N8 SOP-8L SOP-8L PDIP-8L U : Tube 13 : Tape & Reel Tube 13” Tape and Reel Part Number Part Number Quantity Quantity Suffix Suffix NA NA 2500/Tape & Reel -13 NA NA 2500/Tape & Reel -13 60 -U NA NA Lead-free Notes: 1. PDIP-8L is available in “Lead Free” product only. 2. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 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. Pin Assignment (1) SOP-8L (2) PDIP-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 AP34063 Rev. 5 DS31004 Gnd 4 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Maximum Ratings Symbol VCC VIR VC (switch) VE (switch) VCE (switch) VC (driver) IC (driver) ISW PD θJA TMJ TOP Tstg Notes: 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 Switch Current SOP: TA = 25°C Power Dissipation and Thermal PDIP: TA = 25°C Characteristics Thermal Resistance Maximum Junction Temperature Operating Junction Temperature Range Storage Temperature Range Value 40 -0.3 ~ +40 40 40 40 40 100 1.6 600 Unit V V V V V V mA A mW 1.25 160 +150 0 ~ +105 -65 ~ +150 W °C/W °C °C °C 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. Electrical Characteristics (VCC = 5.0V, unless otherwise specified) Symbol Characteristics Min OSCILLATOR fosc 24 Frequency (VPin 5 = 0V, CT = 1.0nF, TA = 25°C) 24 Ichg Charge Current (VCC = 5.0V to 40V, TA = 25°C) Idischg 140 Discharge Current (VCC = 5.0V to 40V, TA = 25°C) 5.2 Idischg / Ichg Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C) Vipk (sense) 300 Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C) OUTPUT SWITCH (Note 3) Saturation Voltage, Darlington Connection VCE (sat) (ISW = 1.0A, Pins 1,8 connected) Saturation Voltage, Darlington Connection VCE (sat) (ISW = 1.0A, ID = 50mA, Forced ß ≈ 20) 50 hFE DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25°C) IC (off) Collector Off-State Current (VCE = 40V) COMPARATOR Vth Threshold Voltage 1.225 TA = 25°C o o TA = 0 C ~ 70 C 1.21 Regline 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 ICC 5 > Vth Pin 2 = Gnd, remaining pins open) AP34063 Rev. 5 DS31004 5 of 11 www.diodes.com Typ. Max Unit 33 30 200 6.5 400 42 42 260 7.5 450 kHz µA µA mV 1.0 1.3 V 0.45 0.7 V 75 0.01 100 µA 1.25 1.4 1.275 1.29 6.0 V mV - 3.5 mA JULY 2009 © 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. 5 DS31004 6 of 11 www.diodes.com JULY 2009 © 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 80 90 100 3.5 3.0 2.5 2.0 1.5 1.0 0.0 10 20 30 40 50 60 70 80 90 100 0 Temperature (oC) 5 10 15 20 25 30 35 40 Vcc, Supply Voltage (V) Figure 5. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current Figure 6.Output Switch On-Off Time versus Oscillator Timing Capacitor ton-off, Output Switch On-Off Time(us) 1000 1.8 VCE ( sat), (V) 70 0.5 320 0 1.65 60 4.0 420 1.7 50 Figure 4. Standby Supply Current versus Supply Voltage 440 1.75 40 Temperature (oC) Vcc=2~10V Pin1,7,8=Vcc Pin3,5=GND TA=25oC Pin2=5 ≤10W 1.6 1.55 1.5 1.45 1.4 100 300 500 700 900 IE(mA) AP34063 Rev. 5 DS31004 1100 1300 1500 100 VCC = 5.0V Pin 7 = VCC Pin 5 = GND TA = 25oC ton 10 t off 1 0.1 0.01 7 of 11 www.diodes.com 0.1 1 CT, Oscillator Timing Capacitor ( nF) 10 JULY 2009 © 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 toff Vin - vsat ton +1 toff +1 toff ton ( ton +toff ) - toff ( ton +toff ) - toff ( ton + toff ) - toff CT 4.0×10-5ton 4.0×10-5ton 4.0×10-5ton 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) CO ( Vin (min) – Vsat ) Ipk (switch) 9 ton (max) ( Vin (min) – Vsat -Vout ) Ipk (switch) Iout ton Ipk (switch) ( toff + ton ) Vripple (pp) 8Vripple (pp) ( Vin (min) – Vsat ) ton (max) Ipk (switch) 9 ton (max) 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. 5 DS31004 8 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Marking Information (1) SOP-8L ( Top View ) 8 Logo Part No. 5 AP34063 YY WW X X 1 4 L : Lead Free G : Green Internal code Xth week = 01~52 Year : "08" = 2008 "09" = 2009 ~ (2) PDIP-8L ( Top View ) 8 Logo Part No. 5 AP34063 YY WW X X 1 4 L : Lead Free Internal code Xth week = 01~52 Year : "08" = 2008 "09" = 2009 ~ AP34063 Rev. 5 DS31004 9 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Package Information (All Dimensions in mm) 0.254 0.10/0.20 3.85/3.95 5.90/6.10 (1) SOP-8L Gauge Plane Seating Plane 0.62/0.82 Detail "A" 7°~9° 0.15/0.25 1.30/1.50 1.75max. 0.35max. 45° 7°~9° Detail "A" 0°/8° 0.3/0.5 1.27typ 4.85/4.95 5.4 8x-0.60 8x-1.55 6x-1.27 Land Pattern Recommendation (Unit: mm) (2) PDIP-8L AP34063 Rev. 5 DS31004 10 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER 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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