 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| AP1625 PWM/PFM Dual Mode Step-down DC/DC Controller Features - Input voltage range:2.2V~8VVOUT type - Adjustable version2.5% - Oscillator frequency: 270KHz15% - High Efficiency: 92%typ . - Stand-by capability: ISTB3A.max . - Soft-start time set-up externally type possible - Output voltage type possibleFB - Package: SOT23-5 General Descriptions The AP1625 series are multi-functional step-down DC/DC converters with built-in speed, low ON resistance drivers. A more than 1A output current is possible using an externally connected transistor, coil, diode and capacitor. Output voltage is set-up by external resistor. 2.5% accuracy. With a 270KHz switching frequency, the size of the external components can be reduced. Control switches from PWM to PFM during light loads with the AP1625 PWM/PFM switchable and the series is highly efficient from light loads to large output currents. In relation to soft-start time external capacitor regulated types. During stand-by time CE pin "LOW",current consumption is reduced to less than 0.5A. With U.V.L.O internal, the external MOSFET. Will be forcibly switched off if used below the stipulated voltage. Applications Electronic Information Organizers Palmtops Cellular and portable phones Portable Audio Systems Various Multi-function Power Supplies Pin Assignment (Top View) FB 5 CE 4 Pin Descriptions Pin No. 1 2 3 4 Pin Name Function V OUT External PMOSFET Connection V DD Power Supply GND Ground CE FB Chip Enable Soft-start capacitor connection Feedback pin 1 VOUT 2 VDD 3 GND 5 SOT23-5 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.1.1 May.27, 2004 1/5 AP1625 PWM/PFM Dual Mode Step-down DC/DC Controller Ordering Information AP1625 X X X Package W : SOT23-5 Lead Free Packing Blank : Normal A : Taping L : Lead Free Package Block Diagrams FB Phase Compensation VDD + - + PWM Comparator Ramp Wave Generator, OSC Buffer, Driver Vout CE Vref with Soft Start CE PWM/PFM Controller GND Absolute Maximum Ratings Ta=25C Parameter VIN Pin Voltage VOUT Pin Voltage FB Pin Voltage CE Pin Voltage VOUT Pin Current Continuous Total Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VDD VOUT VFB VCE VOUT Pd Topr Tstg Rating -0.3 ~ 8.5 -0.3 ~ VIN+0.3 -0.3 ~ VIN+0.3 -0.3 ~ VIN+0.3 100 250 -30 ~ +80 -40 ~ +125 Unit V V V V mA mW C C Anachip Corp. www.anachip.com.tw Rev.1.1 May.27, 2004 2/5 AP1625 PWM/PFM Dual Mode Step-down DC/DC Controller Electrical Characteristics AP1625 VOUT3.3V, FOSC270KHz Parameter FB Maximum Input Voltage UVLO Voltagemin. operating voltage Symbol VFB VIN VUVLO Ta=25C Conditions Min. Typ. Max. 1.17 8 1.2 1.23 Unit V V Same as IDD, voltage required to 2.2 V maintain H at VOUT No external components, 40 110 A Supply Current IDD CE=VIN, VOUT=0V No external components, Stand-by Current ISTB 2 A CE=VIN, VOUT=0V Measuring of EXT/waveform, Oscillator Frequency Fosc 230 270 310 KHz VIN=output voltage+0.3V Maximum Duty Ratio MAXDTY 100 % PFM Duty Ratio PFMDTY NO load (AP1625 only) 15 25 35 % NO external components, VFB=0V, apply 0.65V (min.) to CE,determine 0.5 CE"High" Voltage VCEH Vcc VOUT"Low" determine Same as VCEH, 0.20 V CE"Low" Voltage VCEL EXT/"High" Efficiency EFFI 92 % Soft-Start Time Tss Use a 33 nF Capacitor 5 15 msec Measuring conditions: Unless otherwise specified, connect external components. VIN=5.0V,LOUT=220mA Series Amendment: AP1625 External Components: Css 0.033F, Rss470k The Following Parameter Applies: Soft Start TimeTss:Connect Rss,CSS. CE,0V3.0VWhen VIN<3.0V, VIN3.0V Anachip Corp. www.anachip.com.tw Rev.1.1 May.27, 2004 3/5 AP1625 PWM/PFM Dual Mode Step-down DC/DC Controller Typical Application Circuit AP1625 L PMOS RSS VIN +CIN SD CSS VOUT CE GND FB VDD CFB VOUT RFB1 +CL RFB2 RL Marking Information SOT23-5L 5 4 XX Y M X XX : Identification code (See Appendix) Y : Year: 0-9 M : Month: A~L X : Blank: normal L: Lead Free Package Appendix Part Number AP1625 Package SOT23-5 Identification Code EW 1 2 SOT23-5L Anachip Corp. www.anachip.com.tw Rev.1.1 May.27, 2004 4/5 7 3 AP1625 PWM/PFM Dual Mode Step-down DC/DC Controller Package Information Package Type: SOT23-5L D e1 1(4x) 5 4 0.10 C 5x Seating Plane A1 2(4x) E1 E A A2 1 e 2 3 b With Plating b1 C C1 Gauge Plane 0.25 mm Base Metal b L L1 Symbol A A1 A2 b b1 c c1 D E E1 L L1 e e1 1 2 Dimensions In Millimeters Min. Nom. Max. 1.05 1.20 1.35 0.05 0.10 0.15 1.00 1.10 1.20 0.25 0.55 0.25 0.40 0.45 0.08 0.20 0.08 0.11 0.15 2.70 2.85 3.00 2.60 2.80 3.00 1.50 1.60 1.70 0.35 0.45 0.55 0.60 Ref. 0.95 Bsc. 1.90 Bsc. 5o 10o 0o o o 5 7o 3 o o 6 8 10o Dimensions In Inches Min. Nom. Max. 0.041 0.047 0.053 0.002 0.004 0.006 0.039 0.043 0.047 0.010 0.022 0.010 0.016 0.018 0.003 0.008 0.003 0.004 0.006 0.106 0.112 0.118 0.102 0.110 0.118 0.059 0.063 0.067 0.014 0.018 0.022 0.024 Ref. 0.037 Bsc. 0.075 Bsc. 0o 5o 10o o o 3 5 7o o o 6 8 10o Anachip Corp. www.anachip.com.tw Rev.1.1 May.27, 2004 5/5 |
Price & Availability of AP1625WLA
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |