AP34063

AP34063 UNIVERSAL DC/DC CONVERTER 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) Description 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 8 180 SQ Q2 Q1 2 B240 Ipk Rsc 0.24 Vin 12V 6 + 1 R 7 CT Osc 3 V CC 470 uF + _ CT Comp. 1.25V Ref Reg 680 pF 4 V out 28V/200mA 470uF + 5 R2 R1 10k 56k CO 1.0uH V out + 100 Optional Filter Test Line Regulation Load Regulation Output Ripple Efficiency AP34063 Rev. 5 DS31004 Conditions Vin = 9V to 12V, IO = 200mA Vin = 12V, IO = 50mA to 200mA Vin = 12V, IO = 200mA Vin = 12V, IO = 200mA 1 of 11 www.diodes.com Results 20mV = ±0.035% 15mV = ±0.035% 500mVPP 80% JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Application Circuit (2) Step-Down Converter (Continued) 8 1 SQ R 7 Q2 Q1 2 Ipk Rsc 0.11 Vin 25V 470 uF + + _ CT Osc 6 VC C B240 3 CT L Comp. 1.25V Ref Reg 470 pF 4 R2 Vout 5.0V/500mA 470uF + 100uH 5 1.0uH Vout + R1 25k 36k CO 100 Optional Filter Test Line Regulation Load Regulation Output Ripple Efficiency Conditions Vin = 12V to 24V, IO = 500mA Vin = 24V, IO = 50mA to 500mA Vin = 24V, IO = 500mA Vin = 24V, IO = 500mA Results 20mV = ±0.2% 5mV = ±0.05% 160mVPP 82% AP34063 Rev. 5 DS31004 2 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Application Circuit (Continued) (3) Voltage Inverting Converter 8 1 SQ Q2 Q1 2 R 7 Ipk Rsc 0.26 Vin 4.5V to 6.0V + L CT Osc 100 uH 6 VC C + _ 3 + 470uF Comp. 1.25V Ref Reg 4 680 pF B240 5 R1 R2 50k 3k 470uF CO Vout -12V/100mA + 1.0uH Vout + 100 Optional Filter Test Line Regulation Load Regulation Output Ripple Efficiency Conditions Vin = 4.5V to 6.0V, IO = 100mA Vin = 5.0V, IO = 20mA to 100mA Vin = 5.0V, IO = 100mA Vin = 5.0V, IO = 100mA Results 20mV = ±0.08% 30mV = ±0.12% 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 Package S8 : SOP-8L N8 : PDIP-8L Lead Free L : Lead Free (Note 1) G : Green Packing U : Tube 13 : Tape & Reel Device Lead-free Package Code S8 S8 N8 Packaging (Note 3) SOP-8L SOP-8L PDIP-8L AP34063S8L-13 AP34063S8G-13 AP34063N8L-U Notes: 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 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 ) Switch Collector Switch Emitter Timing Capacitor Gnd ( Top View ) 8 7 6 5 Driver I pk Sense V CC Collector Comparator Inverting Input 1 2 3 4 Switch Collector Switch Emitter Timing Capacitor Gnd 1 2 3 4 8 7 6 5 Driver I pk Sense V CC Collector Comparator Inverting Input AP34063 Rev. 5 DS31004 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 1.25 160 +150 0 ~ +105 -65 ~ +150 Unit V V V V V V mA A mW 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) Typ. 33 30 200 6.5 400 1.0 0.45 75 0.01 1.25 1.4 - Max 42 42 260 7.5 450 1.3 0.7 100 1.275 1.29 6.0 3.5 Unit kHz µA µA mV V V µA V mV mA AP34063 Rev. 5 DS31004 5 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Representative Schematic Diagram Drive Collector 8 1 Switch Collector SQ Q2 Q1 100 2 Switch Emitter R Ipk Sense 7 Ipk Oscillator 6 VCC CT Comparator + _ 1.25V Reference Regulator 3 Timing Capacitor Comparator Inverting Input 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 Vce(sat), Saturation Voltage (V) 1.4 1.26 Figure 2. Reference Voltage versus Temp. 1.2 Reference Voltage (V) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.255 1 1.25 0.8 1.245 0.6 1.24 0 10 20 30 40 50 60 70 80 90 100 Ie, Emitter Current (A) Temperature (oC) Figure 3. Current Limit Sense Voltage versus Temperature 440 4.0 Figure 4. Standby Supply Current versus Supply Voltage Current Sense Voltage (mV) 420 Icc, Supply Current (mA) 10 20 30 40 50 60 70 80 90 100 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 5 10 15 20 25 30 35 40 400 380 360 340 320 0 Temperature (oC) Vcc, Supply Voltage (V) Figure 5. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current 1.8 1.75 Vcc=2~10V Pin1,7,8=Vcc Pin3,5=GND TA=25oC Pin2=5 ≤10W Figure 6.Output Switch On-Off Time versus Oscillator Timing Capacitor ton-off, Output Switch On-Off Time(us) 1000 VCE ( sat), (V) 1.7 1.65 1.6 1.55 1.5 1.45 1.4 100 100 VCC = 5.0V Pin 7 = VCC Pin 5 = GND TA = 25oC ton 10 t off 1 300 500 700 900 1100 1300 1500 IE(mA) 0.1 0.01 CT, Oscillator Timing Capacitor ( nF) 0.1 1 10 AP34063 Rev. 5 DS31004 7 of 11 www.diodes.com JULY 2009 © Diodes Incorporated AP34063 UNIVERSAL DC/DC CONVERTER Design Formula Table Calculation ton / toff ( ton + toff ) Step-Up Vout + VF -Vin (min) Vin (min) - Vsat 1/f ton + toff toff ton toff ton CT Ipk (switch) Rsc L (min) ( ton +toff ) - toff 4.0×10-5ton 2Iout (max) (ton / toff +1) 0.3 / Ipk (switch) ( Vin (min) – Vsat ) Ipk (switch) 9 Iout ton Vripple (pp) ton (max) +1 Step-Down vout + vF vin(min) - vsat - vout 1/f ton + toff ton toff ( ton +toff ) - toff 4.0×10-5ton 2Iout (max) 0.3 / Ipk (switch) ( Vin (min) – Vsat -Vout ) Ipk (switch) Ipk (switch) ( toff + ton ) 8Vripple (pp) ton (max) +1 Voltage-Inverting Ivout l + vF Vin - vsat 1/f ton + toff ton toff ( ton + toff ) - toff 4.0×10-5ton 2Iout (max) (ton / toff +1) 0.3 / Ipk (switch) ( Vin (min) – Vsat ) Ipk (switch) 9 Iout ton Vripple (pp) ton (max) +1 CO 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 5 Logo Part No. 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 5 Logo Part No. 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 (1) SOP-8L (All Dimensions in mm) 3.85/3.95 5.90/6.10 0.10/0.20 0.254 0.62/0.82 Gauge Plane Seating Plane Detail "A" 7°~9° 1.30/1.50 1.75max. 0.15/0.25 0.35max. 45° 7°~9° Detail "A" 0°/8° 1.27typ 4.85/4.95 0.3/0.5 8x-0.60 5.4 6x-1.27 8x-1.55 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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