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APW7215 Dataheets PDF



Part Number APW7215
Manufacturers ANPEC
Logo ANPEC
Description Step-Up Converter
Datasheet APW7215 DatasheetAPW7215 Datasheet (PDF)

APW7215 Fixed 600kHz Step-UP Converter for White LEDs Features General Description • Wide Input Voltage from 2.7V to 6V • Fixed 600kHz Switching Frequency • Reference Voltage : 0.2V • PWM brightness control with wide frequency range of 5KHz to 100KHz • Build-in Power MOSFET: 0.3Ω • Over-Voltage Protection • Under Voltage Lockout Protection • Over Temperature Protection • <1µA Quiescent Current during Shutdown • TDFN2x2-6 Package • Halogen and Lead Free Available (RoHS Compliant) Applications.

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APW7215 Fixed 600kHz Step-UP Converter for White LEDs Features General Description • Wide Input Voltage from 2.7V to 6V • Fixed 600kHz Switching Frequency • Reference Voltage : 0.2V • PWM brightness control with wide frequency range of 5KHz to 100KHz • Build-in Power MOSFET: 0.3Ω • Over-Voltage Protection • Under Voltage Lockout Protection • Over Temperature Protection • <1µA Quiescent Current during Shutdown • TDFN2x2-6 Package • Halogen and Lead Free Available (RoHS Compliant) Applications Th e APW72 15 is a current-mod e and fixed freq uen cy 600kHz boost converter with an integrated N-FET to drive white LEDs. The series connection allows the LED current to be identical for uniform brightness.Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency. 600kHz Constant switching frequency allows using small-size inductor and both ofinput and output capacitors. An over voltage protection function, which m onitors the output voltage via LX pin, s tops s witching of the IC if the LXvoltage exceeds the over voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up. The APW7215 also integrates under-voltage lockout and over-temperature protection to protect the IC in abnormal co ndi ti ons . The APW72 15 is avai lab le in TD FN2 x2 -6 package. • White LED Display Backlighting • Cell Phone and Smart Phone • PDA, PMP, MP3 • Digital Camera Simplified Application Circuit Pin Configuration FB 1 NC 2 GND 3 6 VIN 5 EN 4 LX APW7215 TDFN 2x2-6 Top View VIN L1 22 µH VOUT C1 1 µF VIN LX C2 1µF 10 strings GND EN FB PWM Dimming R1 ANP EC res erves the right to ma ke cha nges to imp rove relia bility or m anufac turab ility witho ut no tice, and advise customers to obtain the latest version of relevant information to verify before placing orders. C opyright © ANPEC Electronics C orp. 1 Rev. A.3 - Oct., 2015 www.anpec.com.tw APW7215 Ordering and Marking Information Assembly Material G : Halogen and Lead Free Device Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; w hich are fully compliant w ith RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020Dfor MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-fr ee (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by w eight in homogeneous material and total of Br and Cl does not exceed 1500ppm by w eight). Absolute Maximum Ratings (Note 1) Symbol Parameter Rating Unit V IN VIN Pin to GND -0.3 to 7 V FB and EN to GND -0.3 ~ VIN V VLX LX Pin to GND -0.3 to 40 V PD Power Dissipation Internally Limit W TJ Maximum Junction Temperature 150 °C TSTG Storage Temperature Range -65 to 150 °C TSDR Maximum Lead Soldering Temperature, 10 Seconds 260 °C Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional oper ation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute maximumrating conditions for extended periods may affect device reliability Thermal Characteristics Symbol Parameter Typical Value Unit θJA Junction-to-Ambient Resistance in free air (Note 2) θJC Junction-to-Case Resistance TDFN2x2-6 165 TDFN2x2-6 20 oC/W oC/W Note 2: θ is measured w ith the component mounted on a high effective thermal conductivity test board in free air. JA C opyright © ANPEC Electronics C orp. 2 Rev. A.3 - Oct., 2015 www.anpec.com.tw APW7215 Recommended Operating Conditions (Note 3) Symbol Parameter Range Unit V IN CIN COUT L1 TA TJ VIN Input Voltage Input Capacitor Output Capacitor Converter Output Inductor Ambient Temperature Junction Temperature 2.7 ~ 6 V 1~ µF 1~ µF 4.7 ~ 22 µH -40 ~ 85 °C -40 ~ 125 °C Note 3: Please refer to the typical application circuit. Electrical Characteristics Refer to the typical application circuits. These specifications apply over. VIN=3.6V, TA=25°C. Symbol Parameter Test Conditions APW7215 Unit Min. Typ. Max. SUPPLY VOLTAGE AND CURRENT VIN Input Voltage Range IDD1 IDD2 Input DC Bias Current ISD UNDER-VOLTAGE LOCKOUT VFB = 0.4V, no switching VFB = GND, switching EN = GND 2.7 - 6 V - - 800 µA - 1.2 1.7 mA - - 1 µA UVLO Threshold Voltage UVLO Hysteresis Voltage REFERENCE AND OUTPUT VOLTAGES VIN Rising VIN Falling 1.9 2.2 2.4 V 50 100 200 mV VREF Regulated Feedback Voltage IFB FB Input Current INTERNAL POWER SWITCH VIN=2.7V ~ 6V V FB=1.23V 192 200 208 mV -1 - 1 µA FS W Switching Frequency R ON Power Switch On Resistance VIN=3.6V VIN=3V 540 600 660 kHz - 0.3 0.7 Ω - - 0.7 LX Leakage Current DMAX LX Maximum Duty Cycl.


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