PDF AP4305 Data sheet ( Hoja de datos )

Número de pieza	AP4305
Descripción	CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Fabricantes	Diodes
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No Preview Available ! A Product Line of Diodes Incorporated AP4305 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER Description The AP4305 is a highly integrated solution for a constant voltage/constant current mode SMPS application. The AP4305 contains one 1.21V voltage reference with0.5% accuracy, one current sensing circuit and two operational amplifiers. Combining the voltage reference with one operational amplifier makes AP4305 an ideal voltage controller for use in adapters and battery chargers. The other low voltage reference combined with the other operational amplifier makes it an ideal current limiter for output low side current sensing. The AP4305 is available in SOT26 package. Pin Assignments (Top View) Pin 1 Mark VCTRL 1 GND 2 VOUT 3 6 VCC 5 VSENSE 4 ICTRL Features  Constant Voltage and Constant Current Control  Precision Internal Voltage Reference  Few External Components  Easy Compensation  Low Supply Current: 0.5mA  Operating Temperature Range: -40 to +105oC  Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Applications  Adapters  Battery Chargers SOT26 Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit AP4305 1.210V + VCC VOUT R4 VCTRL To primary R2 R3 C1 + ICTRL GND VSENSE R6 500 Rss C3 R5 R1 VOUT+ IL Load VOUT- VOUT  VREF  R1  R2 (V) R1 AP4305 Document number: DS37513 Rev.2 - 2 CurrentLimit  VSENSE (A) RSS Typical Application 1 1 of 10 www.diodes.com September 2014 © Diodes Incorporated 1 page Electrical Characteristics (VCC=5V, TA=+25oC, unless otherwise specified.) A Product Line of Diodes Incorporated AP4305 Symbol Parameter TOTAL CURRENT CONSUMPTION Total Supply Current ICC Not Including the Output Sinking Current VOLTAGE CONTROL LOOP Gmv Transconduction Gain (VCTRL). Sink Current Only VREF Voltage Control Loop Reference IIBV Input Bias Current (VCTRL) CURRENT CONTROL LOOP Gmi Transconduction Gain (ICTRL). Sink Current Only VSENSE Current Control Loop Reference IIBI Current Out of Pin ICTRL at 200mV OUTPUT STAGE VOL TA=25oC Low Output Voltage at 10mA Sinking Current 2IO0S0 Output Short Circuit Current. Output to VCC, Sink Current Only Conditions TA=+25oC -40oCTA105oC TA=+25oC -40oCTA105oC TA=+25oC -40oCTA +105oC TA=+25oC -40oCTA +105oC Min Typ Max Unit – 0.5 1 mA – 0.6 – 1 3.5 – mA/mV – 2.5 – 1.204 1.186 1.21 – 1.216 1.234 V – 50 – nA – 100 – TA=+25oC 1.5 7 – mA/mV IOUT=2.5mA, TA=+25oC 198 200 202 mV IOUT=2.5mA, -40oCTA +105oC 192 – 208 TA=+25oC -40oC＜TA ＜ oC -40oCTA +105oC – 25 – A – 50 – TA=+25oC TA=+25oC -40oC＜TA ＜ oC -40oCTA +105oC – 200 – mV – 27 50 mA – 35 – AP4305 Document number: DS37513 Rev.2 - 2 5 of 10 www.diodes.com September 2014 © Diodes Incorporated 5 Page

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