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KA431
Adjustable/2.5V, 2% Tolerance Shunt Regulator

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Contents

•General Description
•Features
•Product Status/Pricing/Packaging
•Order Samples
•Application Notes
•Qualification Support

General Description

The KA431/KA431A/KA431L are three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2W. Active output circuitry provides a very sharp turn-on characteristic, making these devices excel lent replacement for zener diodes in many applications.

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Features

  • Programmable output voltage to 36 volts
  • Low dynamic output impedance 0.20 typical
  • Sink current capability of 1.0 to 100mA
  • Equivalent full-range temperature coefficient of 50ppm/°C typical
  • Temperature compensated for operation over full rated operating temperature range
  • Low output noise voltage
  • Fast turn-on response

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Datasheet
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Product Status/Pricing/Packaging      buy now

ProductProduct statusEco StatusPricing*Package typeLeadsPacking methodPackage Drawing
KA431DTFFull ProductionRoHS Compliant$0.238SOIC8TAPE REEL TBD
KA431ZTAFull ProductionRoHS Compliant$0.074TO-92R3AMMO Z03A
* Fairchild 1,000 piece Budgetary Pricing
** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples

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Application Notes

AB-30: Auxiliary Power Applications (49 K) Nov 20, 2009
AB-31: Auxiliary Power Applications (45 K) Nov 20, 2009
AB-32: Battery Charger Applications (103 K) Nov 20, 2009
AB-33: Battery Charger Applications (103 K) Nov 20, 2009
AB-34: Battery Charger Applications (101 K) Nov 20, 2009
AB-35: CRT Monitors (150 K) Nov 20, 2009
AB-37: CRT Monitors (151 K) Nov 20, 2009
AB-38: Color TV Applications (134 K) Nov 20, 2009
AB-39: Color TV Applications (141 K) Nov 20, 2009
AB-40: Color TV Applications (143 K) Nov 20, 2009
AB-41: Color TV Applications (141 K) Nov 20, 2009
AB-42: Color TV Applications (142 K) Nov 20, 2009
AB-43: Color TV Applications (143 K) Nov 20, 2009
AB-44: Power Over Ethernet Applications (88 K) Nov 20, 2009
AB-45: DVD Applications (83 K) Nov 20, 2009
AB-46: DVD Applications (128 K) Nov 20, 2009
AB-47: DVD Applications (115 K) Nov 20, 2009
AB-48: DVD Applications (156 K) Nov 20, 2009
AB-49: DVD Applications (136 K) Nov 20, 2009
AB-50: LCD Monitor Applications (97 K) Nov 20, 2009
AB-52: PC Power Applications (173 K) Nov 20, 2009
AB-53: PC Power Applications (113 K) Nov 20, 2009
AB-54: Set Top Box Applications (136 K) Nov 20, 2009
AB-57: Color-TV Applications (FSCQ565RT - 59 Watts) (253 K) Nov 20, 2009
AB-58: Color-TV Applications (FSCQ765RT - 83 Watts) (266 K) Nov 20, 2009
AB-59: Color-TV Applications (FSCQ965RT - 102 Watts) (240 K) Nov 20, 2009
AB-60: Color-TV Applications (FSCQ1265RT - 132 Watts) (246 K) Nov 20, 2009
AB-61: Color-TV Applications (FSCQ1465RT - 146 Watts) (245 K) Nov 20, 2009
AB-62: Color-TV Applications (FSCQ1565RT - 160 Watts) (231 K) Nov 20, 2009
AB-63: Color-TV Applications (FSCQ1565RP - 198 Watts) (232 K) Nov 20, 2009
AN-4002: PC Power Supervisory Circuit with KA3502 (220 K) Nov 20, 2009
AN-4116: A Fairchild Power Switch (FPS) based on Switched Mode Power Supply for LCD Monitor Use (245 K) Nov 20, 2009
AN-4129: Green Current Mode PWM Controller FAN7601 (357 K) Nov 20, 2009
AN-4134: Design Guidelines for Off-line Forward Converters using FPS (300 K) Nov 20, 2009
AN-4134SC: Chinese Translation: Design Guidelines for Off-line Forward Converters using FPS (892 K) Nov 20, 2009
AN-4137: Design Guidelines for Off-line Flyback Converters using FPS (443 K) Nov 20, 2009
AN-4137SC: Chinese Translation: Design Guidelines for Off-line Flyback Converters using FPS (858 K) Nov 20, 2009
AN-4138: Design Considerations for Battery Charger Using Green Mode Fairchild Power Switch (FPStm) (380 K) Nov 20, 2009
AN-4141: Troubleshooting and Design Tips for Fairchild Power Switch (FPStm) Flyback Applications (170 K) Nov 20, 2009
AN-4146: Design Guidelines for Quasi-Resonant Converters Using FSCQ-series Fairchild Power Switch (FPStm) (370 K) Nov 20, 2009
AN-4149: Design Guidelines for Quasi-Resonant Converters Using KA5Q-series Fairchild Power Switch (FPStm) (307 K) Nov 20, 2009
AN-4150: AN-4150 Design Guidelines for Flyback Converters Using FSQ-series Fairchild Power Switch (FPS?) (555 K) Nov 20, 2009
AN-4151: AN-4151-Half-bridge LLC Resonant Converter Design Using FSFR-series Fairchild Power Switch (FPS?) (1271 K) Nov 20, 2009
AN-6014: AN-6014 Green Current Mode PWM Controller FAN7602 (390 K) Nov 20, 2009
AN-6073: AN-6073 - FAN6751 Highly Integrated Green-Mode PWM Controller (493 K) Nov 20, 2009
AN-6075: AN-6075-Compact Green-Mode Adapter Using FSQ500L for Low Cost (684 K) Nov 20, 2009
AN-6861: AN-6861 ? Applying FAN6861 to Control a Flyback Power Supply with Surge Current Output (462 K) Nov 20, 2009
AN-8024: AN-8024 - Applying Fairchild Power Switch (FPSTM) FSBH-series to Standby Auxiliary Power Supply (482 K) Nov 20, 2009
AN-8025: AN-8025 - Design Guideline of Single-Stage Flyback AC-DC Converter Using FAN7530 for LED Lighting (657 K) Nov 20, 2009
AN-8027: AN-8027 ? FAN480X PFC+PWM Combination Controller Application (613 K) Nov 20, 2009
AN-9008: The Use of QFET in Flyback Converter (124 K) Nov 20, 2009
AN-9011: High Input Voltage, Off-line Flyback Switching Power Supply using FSC IGBT (SGL5N150UF) (75 K) Nov 20, 2009
AN-9015: A180W, 100KHz Forward Converter Using QFET (65 K) Nov 20, 2009
AN-9017: Manufacturing Technology of a Small Capacity Inverter Using a Fairchild IGBT (437 K) Nov 20, 2009
AN-9041: AN-9041 PFCM Design Guide with Analog PFC IC (347 K) Nov 20, 2009
 

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Qualification Support

Click on a product for detailed qualification data

Product
KA431DTF
KA431ZTA

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