Model Information for AS431BNTR-G1

Basic Information

• Manufacturer: Diodes Incorporated
• Product Name: AS431
• Model Number: AS431BNTR-G1
• Document Number: DS36599 Rev. 4 - 2
• Date: May 2018
• Website: www.diodes.com

Description

The AS431 is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics, low temperature coefficient, and low output impedance, making it an ideal substitute for Zener diodes in applications such as switching power supplies, chargers, and other adjustable regulators.

Features

• Programmable Precise Output Voltage: From 2.5V to 36V
• High Stability under Capacitive Load
• Low Temperature Deviation: 4.5mV Typical
• Low Equivalent Full-range Temperature Coefficient: 20PPM/°C Typical
• Sink Current Capacity: From 1mA to 100mA
• Low Output Noise
• Wide Operating Range: -40 to +125°C
• Lead-Free Packages: SOT23, SOT25, TO92 (Ammo Packing), SOT89
• RoHS Compliant and Green Molding Compound

Applications

• Charger
• Voltage Adapter
• Switching Power Supply
• Graphic Card
• Precision Voltage Reference

Pin Assignments

SOT23

• Pin 1: ANODE
• Pin 2: CATHODE
• Pin 3: REF

SOT25

• Pin 1: ANODE
• Pin 2: CATHODE
• Pin 3: REF

SOT89 (Option 1)

• Pin 1: ANODE
• Pin 2: CATHODE
• Pin 3: REF
• Pin 4: NC (Not Connected)

SOT89 (Option 2)

• Pin 1: ANODE
• Pin 2: CATHODE
• Pin 3: REF
• Pin 4: NC (Not Connected)

TO92 (Ammo Packing)

• Pin 1: ANODE
• Pin 2: CATHODE
• Pin 3: REF

Absolute Maximum Ratings

• Cathode Voltage (VKA): 40 V
• Cathode Current Range (IKA): -100 to 150 mA
• Reference Input Current Range (IREF): 10 mA
• Power Dissipation (PD):Z, R Package: 770 mWN, K Package: 370 mW
• Junction Temperature (TJ): +150 °C
• Storage Temperature Range (TSTG): -65 to +150 °C
• ESD (Human Body Model): 2000 V

Recommended Operating Conditions

• Cathode Voltage (VKA): VREF to 36 V
• Cathode Current (IKA): 1.0 to 100 mA
• Operating Ambient Temperature Range (TA): -40 to +125 °C

Electrical Characteristics (TA = +25°C)

• Reference Voltage (VREF):0.5%: 2.487 V to 2.512 V1.0%: 2.475 V to 2.525 V
• Deviation of Reference Voltage Over Full Temperature Range (∆VREF):0 to +70°C: 4.5 mV-40 to +85°C: 4.5 mV-40 to +125°C: 4.5 mV
• Ratio of Change in Reference Voltage to the Change in Cathode Voltage (∆VREF/∆VKA):∆VKA = 10V to VREF: -1.0 to -2.7 mV/V∆VKA = 36V to 10V: -0.5 to -2.0 mV/V
• Reference Current (IREF): 0.7 µA to 4 µA
• Deviation of Reference Current Over Full Temperature Range (∆IREF): 0.4 µA to 1.2 µA
• Minimum Cathode Current for Regulation (IKA (Min)): 0.4 mA to 1.0 mA
• Off-state Cathode Current (IKA (Off)): 0.05 µA to 1.0 µA
• Dynamic Impedance (ZKA): 0.15 Ω to 0.5 Ω
• Thermal Resistance (θJC):SOT23: 135.9 °C/WSOT25: 135.9 °C/WTO92 (Ammo Packing): 81.9 °C/WSOT89: 29.8 °C/W

Ordering Information

• Part Number: AS431BNTR-G1
• Voltage Tolerance: 1.0%
• Package: SOT23
• RoHS Compliant: Yes
• Lead-Free/Green: Yes
• Marking ID: GB6
• Packing Quantity: 3000
• Status: In Production

Package Outline Dimensions

SOT23

• Length (L): 2.300 mm to 2.500 mm
• Width (W): 1.200 mm to 1.400 mm
• Height (H): 0.890 mm to 1.030 mm
• Lead Length (LL): 0.300 mm to 0.510 mm
• Lead Width (LW): 1.900 mm to 2.800 mm
• Lead Thickness (LT): 0.010 mm to 0.100 mm
• Lead Separation (LS): 0.900 mm to 1.100 mm

SOT25

• Length (L): 2.820 mm
• Width (W): 2.650 mm
• Height (H): 1.500 mm
• Lead Length (LL): 0.950 mm
• Lead Width (LW): 0.900 mm
• Lead Thickness (LT): 0.100 mm
• Lead Separation (LS): 0.200 mm

SOT89

• Length (L): 4.400 mm to 4.600 mm
• Width (W): 0.900 mm to 1.200 mm
• Height (H): 3.950 mm to 4.250 mm
• Lead Length (LL): 2.300 mm to 2.600 mm
• Lead Width (LW): 0.320 mm to 0.540 mm
• Lead Separation (LS): 1.400 mm to 1.600 mm

Suggested Pad Layout

SOT23

• Grid Placement Courtyard (G): 2.900 mm
• Pad Length (X): 0.800 mm
• Pad Width (Y): 0.900 mm
• Pad Separation (Z): 0.950 mm
• Pad Thickness (E): 0.950 mm

SOT25

• Grid Placement Courtyard (G): 3.600 mm
• Pad Length (X): 0.700 mm
• Pad Width (Y): 1.000 mm
• Pad Separation (Z): 0.950 mm
• Pad Thickness (E1): 0.950 mm
• Pad Thickness (E2): 1.900 mm

SOT89

• Grid Placement Courtyard (G): 4.600 mm
• Pad Length (X): 0.550 mm
• Pad Width (Y): 1.850 mm
• Pad Separation (Z): 0.800 mm