Product Brief ADJUSTABLE PRECISION SHUNT REGULATORS Description Parametric Table The AZ431-A series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger and other adjustable regulators. The AZ431-A series ICs are of 40V voltage type. Its output voltage can be set to any value between VREF(2.5V) and 36V. The AZ431-A precision reference is offered in two bandgap tolerance: 0.4% and 0.8%. Features · · · · · · · · · Programmable Precise Output Voltage from 2.5V to 36V Very Accurate Reference Voltage: 0.15% Typical High Stability under Capacitive Load Low Temperature Deviation: 4.5mV Typical Low Equivalent Full-range Temperature Coefficient with 20PPM/oC Typical Low Dynamic Output Resistance: 0.2Ω Typical Sink Current Capacity from 1mA to 100 mA Low Output Noise Wide Operating Range of -40 to 125oC Applications · · · · · AZ431-A AZ431A-A AZ431B-A IKA (Max) (mA) 100 100 IKA (Min) (mA) 0.4 0.4 VOUT / VREF Initial Tol. (%) VOUT (Max) (V) 0.4 0.8 36 36 VOUT (Min) (V) 2.5 2.5 ZKA (Typ) (Ω) 0.15 0.15 20 20 -40 -40 +125 +125 Temp Coeff. (Typ) (PPM/oC) Operating Temperature (Min) (oC) Operating Temperature (Max) (oC) Benefits · · · Easier to Stabilize Ultra Low Temperature Coefficient Higher VREF Accuracy · · Wider Operating Temperature Range Very Competitive Price Additional Available Materials Charger Voltage Adapter Switching Power Supply Graphic Card Precision Voltage Reference · · · · Samples Datasheet Reliability Report ESD Report Pin Configuration SOT-23-3 SOT-89 ANODE 3 Nov. 2004 1 2 1 REF CATHODE REF 2 3 ANODE CATHODE BCD Semiconductor Manufacturing Limited Product Brief ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-A Pin Configuration TO-92 SOIC-8 SOT-23-5 REF 3 CATHODE NC 1 7 ANODE 2 ANODE 6 ANODE NC 2 5 1 NC REF CATHODE 3 CATHODE 1 8 ANODE 2 ANODE 3 NC 4 5 ANODE 4 REF Ordering Information Example A Z 431 E1: Lead-Free Blank: Tin Lead Circuit Type TR: Bandgap Tolerance A: 0.4% B: 0.8% Blank: Tube or Bulk A: AZ431(40V) B: AZ431(20V) Package M: SOIC-8 N: SOT-23-3 R: SOT-89 Package Temperature Range SOT-23-5 -40 to 125oC TO-92 -40 to 125oC Tape/Reel or Ammo Z: TO-92 K:SOT-23-5 Part Number Marking ID Voltage Tolerance Tin Lead 0.4% AZ431AK-ATR AZ431AK-ATRE1 K3A E3A Tape & Reel 0.8% AZ431BK-ATR AZ431BK-ATRE1 K3B E3B Tape & Reel 0.4% AZ431AZ-A AZ431AZ-AE1 AZ431AZ-A AZ431AZ-AE1 Bulk 0.4% AZ431AZ-ATR AZ431AZ-ATRE1 AZ431AZ-A AZ431AZ-AE1 Ammo 0.8% AZ431BZ-A AZ431BZ-AE1 AZ431BZ-A AZ431BZ-AE1 Bulk 0.8% AZ431BZ-ATR AZ431BZ-ATRE1 AZ431BZ-A AZ431BZ-AE1 Ammo Lead Free Tin Lead Lead Free Packing Type Detailed information please refer to the relevant datasheet. Sales Office: USA 3170 De La Cruz Blvd, Suite # 105 Santa Clara, CA 95054-2411, U.S.A Tel : +1-408-988 6388 Fax : +1-408-988 6386 Shanghai 8F, B Zone, 900 Yi Shan Road, Shanghai 200233, China Tel : 86-21-6495 9539 Fax : 86-21-6485 9673 Taiwan 4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel : 886-2-2656-2808 Fax : 886-2-2656-2806 Shenzhen Room 27B, Tower C, No. 2070, Shennanzhong Road, Shenzhen 518031, China Tel : 86-755-8368 3987 Nov. 2004 Fax : 86-755-8368 3166 BCD Semiconductor Manufacturing Limited