AP1609

AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Features • • • • • • • • • 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) General Description 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. 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 Lead-Free Packing - U : Tube -13 : Taping S : SOP-8L L : Lead-Free G : Green Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device (Note 2) AP1609S Note: Package Code S Packaging Quantity SOP-8L 100 Tube Part Number Suffix -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 Assignments Pin Descriptions CE 1 Vcc 2 FB 3 PGND 4 AP1609 8 GND 7 GND 6 LX 5 LX Pin Pin Name Number CE Vcc FB PGND LX GND 1 2 3 4 5, 6 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 SOP-8L Block Diagram Vcc FB Phase Compensation LX + - + PWM Comparator Ramp Wave Generator, OSC Buffer, Driver CE Vref with CE PWM/PFM Controller GND PGND AP1609 Rev. 1 2 of 8 www.diodes.com 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 Pd Topr Tstg Ratings -0.3 ~ 7 -0.3 ~ VCC +0.3 -0.3 ~ VCC +0.3 -0.3 ~ 18 -3 ~ 0.2 1200 -20 ~ +80 -20 ~ +125 Units V V V V A mW o o 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 Oscillator Frequency Maximum Duty Ratio PFM Duty Ratio CE “High” Voltage CE “Low” Voltage Efficiency ( FOSC = 300kHz, VOUT = 5V ) Symbol VFB VCC VOUT IOUT RDS (ON) ICCQ ISD Fosc MAXDTY PFMDTY VCEH VCEL EFFI ID = 2.4A No Load, FB = 2V, CE = High No Load, CE = Low Measuring of EXT Waveform, VIN = Output Voltage +0.3V No Load No External Components, VFB = 0V, Apply 0.65VCC (min.) to CE, Chip Enable Same as VCEH, Chip Disable Conditions Min. 1.20 2.5 3.0 2.4 240 80 15 0.65 Typ. 1.23 100 80 1 300 25 91 Ta = 25 oC Max. 1.26 6 17 130 360 35 0.20 Units V V V A mΩ µA µA kHz % % *VCC *VCC % AP1609 Rev. 1 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 2.5V~6V 100 VCC 330K 100u 0.1u 3.3u 0.1u CE GND 10uH SS340 Vout LX FB PGND R2 R1 CBP Option 0.1u 100u Vout = 1.23× (1+ R1 R2 ) , R2= 10K~100K (2) HV Circuit above 5.5V R VCC 330K 470u 0.1u ZD 5V 3.3u 0.1u CE GND 10uH SS340 15V LX FB PGND R2 R1 CBP Option 0.1u 470u Vout = 1.23× (1+ R1 R2 ) , R2 = 10K~100K AP1609 Rev. 1 4 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Typical Performance Characteristics Vcc vs. Supply Current 210 180 VCE =Vcc 400 350 Frequency (KHz) 300 250 200 150 100 3 3.5 Vcc vs. Frequency Load = 300mA Supply Current (uA) 150 120 90 60 30 0 3 3.5 4 4.5 5 5.5 6 4 Vcc (V) 4.5 5 Vcc (V) 5.5 6 1 0.8 Line Regulation Load Regulation 2 1.5 Line Regulation (%) Load Regulation (%) 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 3 3.5 4 4.5 Load = 50mA 5 5.5 6 1 0.5 0 -0.5 -1 -1.5 -2 0 200 400 600 800 1000 Vcc = 5V Vcc (V) Load (mA) 100 95 90 85 Load vs. Efficiency 100 95 90 85 80 75 70 65 60 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 0.2 Load vs. Efficiency Efficiency 80 75 70 65 60 Vcc = 3.3V,Vout = 5V Efficiency Vcc = 5V,Vout = 12V 0.4 0.6 Load (A) Load (A) 0.8 1 1.2 1.4 AP1609 Rev. 1 5 of 8 www.diodes.com JANUARY 2007 © Diodes Incorporated AP1609 PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER Typical Performance Characteristics Temperature vs. Frequency ( Continued ) 400 350 300 250 200 150 100 -50 -25 0 25 Load = 300mA Vcc = 5V 50 75 100 200 180 160 140 120 100 80 60 40 20 0 Temperature vs. Supply Current Frequency (KHz) Supply Current (uA) Vcc = 5V -50 -25 0 25 50 75 100 Temperature (oC) Temperature (oC) 5 4 3 2 1 0 -1 -2 -3 -4 -5 -50 Temperature vs. Vout Vout / Vout (%) Vcc = 5V Load = 100mA -25 0 25 Temperature ( C) o 50 75 100 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. AP1609 YY WW X X L : Lead Free Package G: Green Package Internal code Xth week: 01~52 Year: "01" =2001 "02" =2002 ~ 1 4 Device AP1609S Package SOP-8L Identification Code AP1609 Package Information Package Type: SOP-8L ( All Dimensions in mm ) 3.70/4.10 5.79/6.20 0.08/0.25 0.254 0.38/1.27 Gauge Plane Seating Plane Detail "A" 7°~9° 1.30/1.50 1.75max. 0.20typ 7°~9° 0.35max. 45° Detail "A" 3.70/4.10 1.27typ 4.80/5.30 0.3/0.5 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