ASPL431AZA-R

ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Features    Programmable Precise Output Voltage from 2.5V to 36V  Sink Current Capacity from 150uA to 100mA  Low Output Noise High Stability under Capacitive Load Wide Operating Range of -25℃ to +125°C  Low Temperature Deviation: 5mV Typical Applications    Charger Voltage Adapter Switching Power Supply   Graphic Card Precision Voltage Reference Description The ASPL431A 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, which make it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators.  The output voltage of ASPL431A can be set to any value between VREF (2.5V) and the corresponding maximum cathode voltage (36V). The ASPL431A precision reference is offered in two voltage tolerance: 0.4% and 0.8%. This IC is available in 3 packages: TO92 (Bulk or Ammo Packing), SOT23 .  ANODE 3 3 CATHODE 2 1 REF 1 REF 2 CATHODE TO92 (Bulk Packing) SOT23 NOV 2018 Version1.0 ANODE 1/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Typical Applications Circuit Shunt Regulator High Current Shunt Regulator Current Source or Current Limit NOV 2018 Version1.0 2/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Typical Applications Circuit (Cont.) ASPL431 Precision 5V 1A Regulator PWM Converter with Reference Functional Block Diagram NOV 2018 Version1.0 3/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Absolute Maximum Ratings (Note 4) Symbol Parameter VKA Cathode Voltage IKA Cathode Current Range (Continuous) IREF Reference Input Current Range PD Power Dissipation Rating Unit 40 V -100 to 150 mA 10 mA Z, R Package: 770 mW N Package: 370 SOT23 θJA 380 Thermal Resistance (Junction to Ambient) °C/W TO92 TJ Note 4: 165 Junction Temperature TSTG Storage Temperature Range ESD ESD (Human Body Model) +150 °C -65 to +150 °C 3500 V Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Symbol Parameter Min Max Unit VKA Cathode Voltage VREF 36 V IKA Cathode Current 0.2 100 mA TA Operating Ambient Temperature Range -25 +125 °C NOV 2018 Version1.0 4/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Symbol Test Circuit VREF 4 Reference Voltage VREF 4 Deviation of Reference Voltage Over Full Temperature Range 5 Ratio of Change in Reference Voltage to the Change in Cathode Voltage VREF VKA Parameter Conditions 0.8% Min Typ Max Unit 2.480 2.500 2.520 V -20 to +110°C — -5 -20 mV VKA = 10V to VREF — -1.87 — -1.38 — 0.3 VKA = VREF, IKA = 10mA VKA = VREF IKA = 10mA IKA = 10mA VKA = 36V to 10V IKA = 10mA, R1 = 10kΩ, R2 = mV/V 0.6 IREF 5 Reference Current IREF 5 Deviation of Reference Current Over Full Temperature Range IKA = 10mA, R1 = 10kΩ R2 = ∞, TA = -40 to +125°C — 0.2 0.3 µA 4 Minimum Cathode Current for Regulation VKA = VREF — 0.15 0.4 mA 6 Off-state Cathode Current VKA = 36V, VREF = 0 — 0.01 1.0 µA 4 Dynamic Impedance VKA = VREF, IKA = 1 to 100mA, — 0.10 0.5 Ω IKA (Min) IKA (Off) ZKA — θJC — — NOV 2018 Version1.0 ∞ f ≤ 1.0kHz SOT23 — 113 — TO92 — 68 — µA °C/W Thermal Resistance 5/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Electrical Characteristics (Cont.) Test Circuit 4 for VKA = VREF Test Circuit 5 for VKA > VREF Test Circuit 6 for IOFF NOV 2018 Version1.0 6/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Performance Characteristics Reference Voltage vs. Ambient Temperature Reference Current vs. Ambient Temperature Cathode Current vs. Cathode Voltage NOV 2018 Version1.0 Cathode Current vs. Cathode Voltage 7/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Performance Characteristics (Cont.) Off-state Cathode Current vs. Ratio of Delta Reference Voltage to the Ratio of Delta Cathode Voltage Ambient Temperature Small Signal Voltage Gain vs. Frequency Pulse Response of Input and Output Voltage NOV 2018 Version1.0 8/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Performance Characteristics (Cont.) Shunt Regulator High Current Shunt Regulator ASPL431 Current Source or Current Limit Precision 5V 1A Regulator PWM Converter with Reference NOV 2018 Version1.0 9/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Ordering Information Ordering Number Lead Free Halogen Free ASPL431AG-LP-B ASPL431AG-ZA-R Packing Package Bag Tape Reel TO-92 SOT23 ASPL431A-LP-B Quantity 2500 2500 MARKING PACKAGE 431A SOT23 TO-92 1 R:Tape Reel ,B:Bag ASPL431AG-ZA-R 2 ZA:SOT23,LP:TO-92 1 Packing Type 3 blank : Lead Free G:Halogen Free 2 Package Type 3 Green Package NOV 2018 Version1.0 10/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Symbol A A1 b b1 C D E e L L1 Dimensions in Millimeters Min Max 3.30 3.70 1.10 1.40 0.34 0.55 0.50 0.70 0.34 0.54 4.33 4.83 4.33 4.83 1.27 TYP 14.07 14.87 12.47 TYP NOV 2018 Version1.0 Dimensions in Inches Min Max 0.130 0.146 0.043 0.055 0.013 0.022 0.020 0.028 0.013 0.021 0.170 0.190 0.170 0.190 0.05 TYP 0.554 0.585 0.491 TYP 11/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS Symbol Dimensions in Millimeters Dimensions in Inches Min Max Min Max A 0.90 1.15 0.035 0.045 A1 0.00 0.10 0.000 0.004 A2 0.90 1.05 0.035 0.041 b 0.30 0.55 0.012 0.022 C 0.08 0.15 0.003 0.006 D 2.80 3.00 0.110 0.118 E 1.20 1.40 0.047 0.95 TYP e e1 1.80 0.055 0.037 TYP 2.00 0.071 0.079 H 2.25 2.55 0.089 0.100 L 0.30 0.50 0.012 0.020 θ 0∘ 8∘ 0∘ 8∘ NOV 2018 Version1.0 12/13 Ascend Semicondutor Co.,Ltd ASPL431A ADJUSTABLE PRECISION SHUNT REGULATORS IMPORTANT NOTICE Xi‘an Ascend Semiconductor incorporated MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Xi‘an Ascend Semiconductor Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Xi‘an Ascend Semiconductor Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Xi‘an Ascend Semiconductor Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Ascendsemi Incorporated and all the companies whose products are represented on Xi‘an Ascend Semiconductor Incorporated website, harmless against all damages. Xi‘an Ascend Semiconductor Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Xi‘an Ascend Semiconductor Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Xi‘an Ascend Semiconductor Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. www.ascendsemi.com NOV 2018 Version1.0 13/13 Ascend Semicondutor Co.,Ltd