AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter Features General Descriptions - 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＝1µA.（Typ.） - Built-in internal N-Channel MOS - Pb-Free Package: SOP-8L/TSSOP-8L 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 AP1609（PWM/PFM switchable）and the series is highly efficient from light loads to large output currents. Applications - Electronic Information Organizers - Palmtops - Cellular and portable phones - Portable Audio Systems - Various Multi-function Power Supplies During stand-by time （CE pin “Low”）, current consumption is reduced to 1µA. 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 2、3 IC signal power supply pin PGND 4 6、7 Power MOSFET GND Switch Pin. Connect external inductor/diode 8 LX 5、6 here. Minimize trace area at this pin to reduce EMI. GND 7、8 1 GND Pin 8 GND CE 1 7 GND Vcc 2 AP1609 FB 3 6 LX PGND 4 5 LX SOP-8L GND 1 Vcc 2 Vcc 3 CE 4 AP1609 8 LX 7 PGND 6 PGND 5 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 + + - CE - Vref with CE Buffer, Driver PWM Comparator Ramp Wave Generator, OSC PWM/PFM Controller GND 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 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 Topr Tstg PGND Ta=25oC Units V V V V A mW -20 ~ +80 o -20 ~ +125 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 Ta=25 oC （FOSC＝300kHz, VOUT＝5V） 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 - - 0.20 *VCC - 91 - % RDS(ON) ICCQ ISD Oscillator Frequency Fosc Maximum Duty Ratio PFM Duty Ratio MAXDTY PFMDTY CE ”High” Voltage VCEH CE ”Low” Voltage VCEL Efficiency EFFI Conditions No load No external components, VFB=0V, apply 0.65VCC (min.) to CE, Chip enable Same as VCEH, Chip disable 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 10uH 2.5V~6V SS340 Vout 100 330K 100u 0.1u 3.3u 0.1u VCC LX CE FB R1 CBP Option 0.1u GND PGND Vout=1.23 × (1+ R1 R2 100u R2 ) , R2 =10K~100K (2) HV Circuit 10uH above 5.5V SS340 15V R 330K 470u 0.1u ZD 5V 3.3u 0.1u VCC LX CE FB R1 CBP Option 0.1u PGND GND Vout=1.23 × (1+ R1 R2 470u 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 VCE =Vcc 150 120 90 60 30 0 300 250 200 150 100 3 3.5 4 4.5 Vcc (V) 5 5.5 6 3 3.5 4 5 5.5 6 2 1.5 Load=50mA 3 3.5 4 4.5 5 5.5 1 Vcc=5V 0.5 0 -0.5 -1 -1.5 -2 0 6 200 Vcc (V) Load v.s. Efficiency 100 95 95 90 90 85 85 80 75 70 65 600 800 1000 80 75 Vcc=5V,Vout=12V 70 Vcc=3.3V,Vout=5V 400 Load (mA) Load v.s. Efficiency 100 Efficiency Efficiency 4.5 Vcc (V) Load Regulation Line Regulation 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 Load Regulation (%) Line Regulation (%) Load=300mA 350 Frequency (KHz) Supply Current (uA) 180 Vcc v.s. Frequency 400 65 60 60 0 0.2 0.4 0.6 0.8 Load (A) 1 1.2 1.4 0 0.2 0.4 0.6 0.8 Load (A) 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 400 Supply Current (uA) Frequency (KHz) 350 300 250 200 Load=300mA Vcc=5V 150 100 -50 -25 0 25 50 o Temperature ( C) 75 200 180 160 140 120 100 80 60 40 20 0 Temperature v.s. Supply Current Vcc=5V -50 100 -25 0 25 50 o 75 100 Temperature ( C) △Vout / Vout (%) Temperature v.s. Vout 5 4 3 2 1 0 -1 -2 -3 -4 -5 -50 Vcc=5V Load=100mA -25 0 25 50 Temperature (oC) 75 100 Marking Information ( Top View ) 8 5 Logo AP1609 Part no. YY WW X 4 ~ 1 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 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 H E (1) Package Type: SOP-8L L VIEW "A" D 0.015x45 7 (4X) e B A1 C A A2 7 (4X) VIEW "A" y Symbol A A1 A2 B C D E e H L y θ 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) E E1 (2) Package Type: TSSOP-8L PIN 1 INDICATOR ψ0.70 mm SURFACE POLISHED L L1 DETAIL A D e A A1 A2 b C D E E1 e L L1 y θ 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 C A1 b y Symbol L1 A A2 E1 DETAIL A 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