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| AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Features - Input Voltage Range: 2.5~6V - Output Voltage Range: 3.0~17V2.5% - PWM/PFM Switching Control - Oscillator Frequency: 300KHz20% - High Efficiency: 91%Typ . - Stand-by Current: ISTB1A.Typ. - Built-in internal N-Channel MOS - Pb-Free Package: SOP-8L/TSSOP-8L General Descriptions The AP1609 is 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 AP1609PWM/PFM switchableand the series is highly efficient from light loads to large output currents. During stand-by time CE pin "Low", current consumption is reduced to 1A. Applications - Electronic Information Organizers - Palmtops - Cellular and portable phones - Portable Audio Systems - Various Multi-function Power Supplies Pin Assignment Pin Descriptions Pin Pin No. Description Name SOP TSSOP FB 3 5 Feedback pin Chip Enable: CE 1 4 H: Enable L: Disable Vcc 2 23 IC signal power supply pin PGND 4 67 Power MOSFET GND Switch Pin. Connect external inductor/diode 8 LX 56 here. Minimize trace area at this pin to reduce EMI. GND 78 1 GND Pin CE 1 Vcc 2 FB 3 PGND 4 AP1609 8 GND 7 GND 6 LX 5 LX SOP-8L GND Vcc Vcc CE 1 2 3 4 AP1609 8 7 6 5 LX PGND PGND FB TSSOP-8L This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev.1.2 Mar.25, 2005 1/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Ordering Information AP1609 X X Package Packing A : Taping S : SOP-8L TS: TSSOP-8L Block Diagrams Vcc FB Phase Compensation LX + - + PWM Comparator Ramp Wave Generator, OSC Buffer, Driver CE Vref with CE PWM/PFM Controller GND PGND 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 SOP-8L 1200 TSSOP-8L 700 -20 ~ +80 -20 ~ +125 Ta=25oC Units V V V V A mW o o C C Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 2/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter 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 FOSC300kHz, VOUT5V 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 m A A kHz % % *VCC *VCC % Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 3/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Typical Application Circuit (1) Normal Circuit 2.5V~6V 100 330K 100u 0.1u 3.3u 0.1u VCC CE GND LX FB PGND R2 R1 CBP Option 0.1u 100u 10uH SS340 Vout Vout=1.23 x (1+ R1 R2 ) , R2 =10K~100K (2) HV Circuit above 5.5V R 330K 470u 0.1u ZD 5V 3.3u 0.1u VCC CE GND LX FB PGND R2 R1 CBP Option 0.1u 470u 10uH SS340 15V Vout=1.23 x (1+ R1 R2 ) , R2=10K~100K Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 4/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Typical Performance Characteristics Vcc v.s. Supply Current 210 180 VCE =Vcc 400 350 Vcc v.s. Frequency Load=300mA Supply Current (uA) 150 120 90 60 30 0 3 3.5 4 4.5 5 5.5 6 Frequency (KHz) 300 250 200 150 100 Vcc (V) 3 3.5 4 Vcc (V) 4.5 5 5.5 6 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 3 3.5 Line Regulation Load Regulation (%) Load Regulation 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 0 200 400 600 800 1000 Vcc=5V Line Regulation (%) Load=50mA 4 4.5 5 5.5 6 Vcc (V) Load (mA) 100 95 90 85 Load v.s. Efficiency 100 95 90 85 80 75 70 65 60 0 0.2 0.4 0.6 1.2 1.4 0 0.2 Load v.s. Efficiency Efficiency 80 75 70 65 60 Vcc=3.3V,Vout=5V Efficiency Vcc=5V,Vout=12V Load (A) 0.8 1 0.4 0.6 Load (A) 0.8 1 1.2 1.4 Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 5/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Typical Performance Characteristics (Continued) Temperature v.s. Frequency Supply Current (uA) 400 350 300 250 200 150 100 -50 -25 Load=300mA Vcc=5V 0 25 50 o 200 180 160 140 120 100 80 60 40 20 0 Temperature v.s. Supply Current Frequency (KHz) Vcc=5V Temperature ( C) 75 100 -50 -25 0 25 50 Temperature ( C) o 75 100 Temperature v.s. Vout 5 4 3 2 1 0 -1 -2 -3 -4 -5 -50 Vout / Vout (%) Vcc=5V Load=100mA -25 Temperature (oC) 0 25 50 75 100 Marking Information ( Top View ) 8 5 Logo AP1609 YY WW X Part no. ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 ~ 1 4 SOP-8L/TSSOP-8L Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 6/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Package Information (1) Package Type: SOP-8L E H L VIEW "A" D 7 (4X) A2 A 0.015x45 7 (4X) A1 e B y C VIEW "A" Symbol A A1 A2 B C D E e H L y Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 4.80 5.05 5.30 3.70 3.90 4.10 1.27 5.79 5.99 6.20 0.38 0.71 1.27 0.10 0o 8o Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.100 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.010 0.189 0.199 0.209 0.146 0.154 0.162 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0.004 0o 8o Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 7/8 AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Package Information (Continued) (2) Package Type: TSSOP-8L E1 PIN 1 INDICATOR 0.70 mm SURFACE POLISHED E L L1 DETAIL A D e A2 E1 L1 A1 y Symbol A A1 A2 b C D E E1 e L L1 y Dimensions In Millimeters Min. Nom. Max. 1.05 1.10 1.20 0.05 0.10 0.15 1.00 1.05 0.20 0.25 0.28 0.13 2.90 3.05 3.10 6.20 6.40 6.60 4.30 4.40 4.50 0.65 0.50 0.60 0.70 0.90 1.00 1.10 0.10 0o 4o 8o Dimensions In Inches Min. Nom. Max. 0.041 0.043 0.047 0.002 0.004 0.006 0.039 0.041 0.008 0.01 0.011 0.005 0.114 0.12 0.122 0.244 0.252 0.26 0.169 0.173 0.177 0.026 0.02 0.024 0.028 0.035 0.039 0.043 0.004 0o 4o 8o Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 8/8 C b A DETAIL A |
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