AZ494AP-G1

A Product Line of Diodes Incorporated AZ494 VOLTAGE MODE DUAL OUTPUT PWM CONTROLLER Description Pin Assignments (Top View) NEW PRODUCT The AZ494 is a voltage mode pulse width modulation switching regulator control circuit designed primarily for power supply control. The AZ494 consists of a reference voltage circuit, two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, and an output control circuit. The precision of voltage reference (V REF) is improved up to 1IN+ 1 16 2IN+ 1IN- 2 15 2IN- FEEDBACK 3 14 REF DTC 4 13 OUTPUT CTRL CT 5 12 VCC RT 6 11 C2 GND 7 10 E2 C1 8 9 E1 ±1% through trimming and this provides a better output voltage regulation. The AZ494 provides for push-pull or single-ended output operation, which can be selected through the output control. The difference between AZ494A and AZ494C is that they have 4.95V and 5V reference voltage respectively. The AZ494 is available in standard packages of PDIP-16 and SO-16. SO-16 Features         (Top View) Stable 4.95V/5V Reference Voltage Trimmed to 1.0% Accuracy Uncommitted Output TR for 200mA Sink or Source Current Single-End or Push-Pull Operation Selected by Output Control Internal Circuitry Prohibits Double Pulse at Either Output Complete PWM Control Circuit with Variable Duty Cycle On-Chip Oscillator with Master or Slave Operation Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) 1IN+ 1 16 2IN+ 1IN- 2 15 2IN- FEEDBACK 3 14 REF DTC 4 13 OUTPUT CTRL CT 5 12 VCC RT 6 11 C2 GND 7 10 E2 C1 8 9 E1 Applications PDIP-16    SMPS Back Light Inverter Charger 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