AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER General Description Features • • • • • • • • • The AP1609 is a high efficient step-up DC/DC converter. Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode. Input Voltage Range: 2.5~6V Output Voltage Range: 3.0~17V (±2.5%) PWM/PFM Switching Control Oscillator Frequency: 300KHz (±20%) High Efficiency: 91% (Typ.) Stand-by Current: ISTB 1 = µA (Typ.) Built-in internal N-Channel MOS Lead-Free and Green Package: SOP-8L Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Output voltage is programmable with 1.23V of standard voltage supply internal, and using externally connected components, output voltage (FB) can be set up at will. With a 300KHz switching frequency, the size of the external components can be reduced. Control switches from PFM to PWM during light loads with the AP1609 (PWM/PFM switchable) and the series are highly efficient from light loads to large output currents. During stand-by time (CE pin “Low”), current consumption is reduced to 1µA. Applications • • • • • Electronic Information Organizers Palmtops Cellular and Portable Phones Portable Audio Systems Various Multi-Function Power Supplies Ordering Information AP1609 X X X Package Packing Lead-Free S : SOP-8L L : Lead-Free G : Green Note: Note: - U : Tube -13 : Taping 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device (Note 2) Package Code AP1609S S Packaging Quantity SOP-8L Tube Part Number Suffix 100 -U 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2. 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. AP1609 Rev. 1 1 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Pin Descriptions Pin Assignments CE 1 8 GND Vcc 2 7 GND AP1609 FB 3 6 LX PGND 4 5 LX SOP-8L Pin Pin Name Number CE 1 Vcc FB PGND 2 3 4 LX 5, 6 GND 7, 8 Description Chip Enable: H: Enable L: Disable IC signal power supply pin Feedback pin Power MOSFET GND Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin to reduce EMI. GND Pin Block Diagram Vcc FB Phase Compensation + + - CE Vref with CE LX Buffer, Driver - PWM/PFM Controller PWM Comparator Ramp Wave Generator, OSC GND AP1609 Rev. 1 2 of 8 www.diodes.com PGND JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Absolute Maximum Ratings Parameter VIN Pin Voltage FB Pin Voltage CE Pin Voltage Switch Voltage (LX to GND) Switch Current Continuous Total Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC VFB VCE VSW ILX Ratings -0.3 ~ 7 -0.3 ~ VCC +0.3 -0.3 ~ VCC +0.3 -0.3 ~ 18 -3 ~ 0.2 Units V V V V A Pd 1200 mW Topr -20 ~ +80 o -20 ~ +125 o Tstg C C Electrical Characteristics AP1609 Parameter FB Voltage Input Voltage Output Voltage Maximum Switching Output Current Drain-Source On-State Resistance Quiescent Current Shutdown Current Symbol Min. Typ. Max. Units VFB VCC VOUT 1.20 2.5 3.0 1.23 - 1.26 6 17 V V V IOUT 2.4 - - A ID = 2.4A - 100 - mΩ No Load, FB = 2V, CE = High No Load, CE = Low Measuring of EXT Waveform, VIN = Output Voltage +0.3V - 80 1 130 - µA µA 240 300 360 kHz 80 15 25 35 % % 0.65 - - *VCC - 91 0.20 - *VCC % RDS (ON) ICCQ ISD Oscillator Frequency Fosc Maximum Duty Ratio PFM Duty Ratio MAXDTY PFMDTY CE “High” Voltage VCEH CE “Low” Voltage Efficiency VCEL EFFI AP1609 Rev. 1 Ta = 25 oC ( FOSC = 300kHz, VOUT = 5V ) Conditions No Load No External Components, VFB = 0V, Apply 0.65VCC (min.) to CE, Chip Enable Same as VCEH, Chip Disable 3 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Typical Application Circuit (1) Normal Circuit 10uH 2.5V~6V SS340 Vout 100 VCC LX CE FB R1 CBP Option 330K 100u 0.1u 3.3u 0.1u 0.1u PGND GND Vout = 1.23× (1+ R1 R2 100u R2 ) , R2= 10K~100K (2) HV Circuit 10uH above 5.5V SS340 15V R VCC LX CE FB R1 330K 470u 0.1u ZD 5V 3.3u 0.1u 0.1u GND PGND Vout = 1.23× (1+ AP1609 Rev. 1 CBP Option R1 R2 4 of 8 www.diodes.com 470u R2 ) , R2 = 10K~100K JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Typical Performance Characteristics Vcc vs. Supply Current 210 VCE =Vcc Load = 300mA 350 150 Frequency (KHz) Supply Current (uA) 180 Vcc vs. Frequency 400 120 90 60 30 300 250 200 150 100 0 3 3.5 4 4.5 5 5.5 3 6 3.5 4 Vcc (V) Load Regulation (%) Line Regulation (%) 1.5 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 1 3 3.5 4 4.5 5 5.5 Vcc = 5V 0.5 0 -0.5 -1 -1.5 Load = 50mA -1 -2 0 6 200 Vcc (V) Load vs. Efficiency 100 400 600 800 Load (mA) 1000 Load vs. Efficiency 100 95 95 90 90 85 85 Efficiency Efficiency 6 2 0.8 80 75 70 Vcc = 3.3V,Vout = 5V 65 80 75 Vcc = 5V,Vout = 12V 70 65 60 60 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Load (A) AP1609 Rev. 1 5.5 Load Regulation Line Regulation 1 4.5 5 Vcc (V) 5 of 8 www.diodes.com 0 0.2 0.4 0.6 0.8 Load (A) 1 1.2 1.4 JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Typical Performance Characteristics Temperature vs. Frequency 400 Supply Current (uA) Frequency (KHz) 350 300 250 200 Load = 300mA Vcc = 5V 150 100 -50 Vout / Vout (%) ( Continued ) -25 0 25 50 Temperature (oC) 75 100 200 180 160 140 120 100 80 60 40 20 0 Temperature vs. Supply Current Vcc = 5V -50 -25 0 25 50 75 100 Temperature (oC) Temperature vs. Vout 5 4 3 2 1 0 -1 -2 -3 -4 -5 Vcc = 5V Load = 100mA -50 -25 0 25 50 o 75 100 Temperature ( C) AP1609 Rev. 1 6 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Marking Information (1) SOP-8L ( Top View ) 8 5 Logo Part no. L : Lead Free Package G: Green Package AP1609 YY WW X X 4 ~ 1 Internal code Xth week: 01~52 Year: "01" =2001 "02" =2002 Device Package Identification Code AP1609S SOP-8L AP1609 Package Information ( All Dimensions in mm ) 0.254 0.08/0.25 5.79/6.20 3.70/4.10 Package Type: SOP-8L Gauge Plane Seating Plane 0.38/1.27 Detail "A" 7°~9° 0.20typ 1.75max. 1.30/1.50 0.35max. 45° 0.3/0.5 1.27typ 7°~9° Detail "A" 3.70/4.10 4.80/5.30 AP1609 Rev. 1 7 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP 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. AP1609 Rev. 1 8 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated