AP1506-K5L-13

AP1506 150kHz, 3A PWM BUCK DC/DC CONVERTER Description Pin Assignments The AP1506 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 3A load without external transistor. Due to reducing the number of external components, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is to prevent over current operating of the output switch. If current limit function occurred and VFB is down to 0.5V below, the switching frequency will be reduced. (Top View) 5 SD 4 FB 3 GND 2 Output 1 VIN Metal Tab GND TO263-5 The AP1506 series operate at a switching frequency of 150kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The packages are available in a standard 5-lead TO263-5, TO220-5 and TO220-5 (R). (Top View) 5 SD 4 FB 3 GND 2 Output 1 VIN TO220-5/TO220-5 (R) Features  Output Voltage: 3.3V, 5V, 12V and Adjustable Output Version  Adjustable Version Output Voltage Range, 1.23V to 18V+4%  150kHz +15% Fixed Switching Frequency  Simple High-Efficiency Step-Down Regulator Voltage Mode Non-Synchronous PWM Control  On-Card Switching Regulators  Thermal-Shutdown and Current-Limit Protection  Positive to Negative Converter  ON/OFF Shutdown Control Input  Operating Voltage can be up to 22V  Output Load Current: 3A  Low Power Standby Mode  Built-in Switching Transistor On Chip  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free.“Green” Device (Note 3)  Notes: Applications 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