AP1609

AP1609 ANACHIP | Alldatasheet

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PWM/PFM Dual Mode Step-up DC/DC Converter 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 „ 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＝1µA.（Typ.） - Built-in internal N-Channel MOS - Pb-Free Package: SOP-8L/TSSOP-8L „ Applications - Electronic Information Organizers - Palmtops - Cellular and portable phones - Portable Audio Systems - Various Multi-function Power Supplies „ 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 AP1609（PWM/PFM switchable）and the series is highly efficient from light loads to large output currents. During stand-by time （CE pin “Low” ）, current consumption is reduced to 1µA. „ Pin Assignment CE LXFB AP1609 LX GND GND PGND Vcc SOP-8L GND Vcc Vcc CE LX PGND PGND FB AP1609 TSSOP-8L „ Pin Descriptions Pin No. Pin Name SOP TSSOP Description FB 3 5 Feedback pin CE 1 4 Chip Enable: H: Enable L: Disable Vcc 2 2、3 IC signal power supply pin PGND 4 6、7 Power MOSFET GND LX 5、68 Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin to reduce EMI. GND 7、8 1 GND Pin

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Ordering Information AP1609 X X S : SOP-8L TS: TSSOP-8L Packing A : Taping Package „ Block Diagrams Phase Compensation Vref with CE PWM/PFM Controller Ramp Wave Generator, OSC Buffer, Driver FB CE PGND LX PWM Comparator GND Vcc „ Absolute Maximum Ratings T a = 2 5 oC Parameter Symbol Ratings Units VIN Pin Voltage V CC -0.3 ~ 7 V FB Pin Voltage V FB - 0 . 3 ~ V CC+0.3 V CE Pin Voltage V CE - 0 . 3 ~ V CC+0.3 V Switch Voltage (LX to GND) V SW -0.3 ~ 18 V Switch Current I LX - 3 ~ 0 . 2 A SOP-8L 1200 Continuous Total Power Dissipation Pd TSSOP-8L 700 mW Operating Ambient Temperature Topr -20 ~ +80 oC Storage Temperature Tstg -20 ~ +125 oC

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Electrical Characteristics A P 1 6 0 9 （FOSC＝300kHz, VOUT＝5V） T a = 2 5 oC Parameter Symbol Conditions Min. Typ. Max. Units FB Voltage V FB 1.20 1.23 1.26 V Input Voltage V CC 2.5 - 6 V Output Voltage V OUT 3.0 - 17 V Maximum Switching Output Current IOUT 2.4 - - A Drain-Source On-state Resistance RDS(ON) I D=2.4A - 100 - m Ω Quiescent Current I CCQ No load, FB=2V, CE=High - 80 130 µA Shutdown Current I SD No load, CE=Low - 1 - µA Oscillator Frequency Fosc Measuring of EXT waveform, VIN=output voltage+0.3V 240 300 360 kHz Maximum Duty Ratio MAXDTY 80 - - % PFM Duty Ratio PFMDTY No load 15 25 35 % CE ”High” Voltage V CEH No external components, VFB=0V, apply 0.65VCC (min.) to CE, Chip enable 0.65 - - *V CC CE ”Low” Voltage V CEL Same as VCEH, Chip disable - - 0.20 *V CC Efficiency EFFI - 91 - %

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Typical Application Circuit (1) Normal Circuit LX VCC FB GND CE 2.5V~6V PGND SS340 CBP 0.1u 100u Vout 0.1u 330K 3.3u0.1u 100 100u 10uH Option (2) HV Circuit LX VCC FB GND CE above 5.5V PGND SS340 0.1u 470u 15V 0.1u 330K ZD 0.1u R 470u 3.3u 10uH CBP Option

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Typical Performance Characteristics 120 150 180 210 33 . 544 . 555 . 56 Vcc v.s. Supply Current Vcc (V) Supply Current (uA) VCE =Vcc Vcc v.s. Frequency 100 150 200 250 300 350 400 33 . 544 . 555 . 56 Vcc (V) Frequency (KHz) Load=300mA Line Regulation -0.8 -0.6 -0.4 -0.2 0.2 0.4 0.6 0.8 3 3.5 4 4.5 5 5.5 6 Vcc (V) Line Regulation (%) Load=50mA -1.5 -0.5 0.5 1.5 0 200 400 600 800 1000 Load (mA) Load Regulation (%) Load Regulation Vcc=5V 100 Load (A) Efficiency Load v.s. Efficiency Vcc=3.3V,Vout=5V 100 Load (A) Efficiency Load v.s. Efficiency Vcc=5V,Vout=12V

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Typical Performance Characteristics (Continued) 100 150 200 250 300 350 400 -50 -25 0 25 50 75 100 Temperature v.s. Frequency Temperature (oC) Frequency (KHz) Load=300mA Vcc=5V 100 120 140 160 180 200 -50 -25 0 25 50 75 100 Temperature v.s. Supply Current Temperature (oC) Supply Current (uA) Vcc=5V - 5 0 - 2 50 2 55 07 5 1 0 0 Temperature v.s . Vout Temperature ( oC) △Vout / Vout (%) Vcc=5V Load=100mA „ Marking Information SOP-8L/TSSOP-8L ( Top View ) Logo Part no. ID code: internal Year: "01" =2001 "02" =2002 Xth week: 01~52 ~1 4 8 5 AP1609 YY WW X

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Package Information (1) Package Type: SOP-8L VIEW "A" L C VIEW "A" H E A A2A1Be D 7 (4X) 0.015x45 7 (4X) y A1 0.10 - 0.25 0.040 - 0.100 θ 0o - 8 o 0 o - 8 o

PWM/PFM Dual Mode Step-up DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.2 Mar.25, 2005 „ Package Information (Continued) (2) Package Type: TSSOP-8L A E b y e C DETAIL A DETAIL A L 1 L E1 L1 D PIN 1 INDICATOR ψ0.70 mm SURFACE POLISHED A2 - 1.00 1.05 - 0.039 0.041 θ 0 o 4 o 8 o 0 o 4 o 8 o