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ATL432
- Adjustable Regulated Output of 2.5V to 36V
- Very-Low Operating Current
- IKA(min) = 35µA (Maximum)
- IREF = 150nA (Maximum)
- Internally Compensated for Stability
- Stable With No Capacitive Load
- Reference Voltage Tolerances at 25°C
- 0.5% for B Grade
- 1% for A Grade
- Typical Temperature Drift
- 5mV (–40°C to +85°C); I Version
- 6mV (–40°C to +125°C); Q Version
- Extended Cathode Current Range 35µA to 100mA
- Low Output Impedance of 0.3Ω (Maximum)
The ATL431 and ATL432 are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.05Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.
The ATL43x has > 20x improvement cathode current range over its TL43x predecessor. It also is stable with a wider range of load capacitance types and values.
ATL431 and ATL432 are the exact same parts but with different pinouts and order numbers. The ATL43x is offered in two grades, with initial tolerances (at 25°C) of 0.5%, 1%, for the B and A grade, respectively. In addition, low output drift vs temperature ensures consistent voltage regulation over the entire temperature range.
The ATL43xxI devices are characterized for operation from –40°C to +85°C, and the ATL43xxQ devices are characterized for operation from –40°C to +125°C.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | ATL43x 2.5V Low Iq Adjustable Precision Shunt Regulator datasheet (Rev. E) | PDF | HTML | 2024. 12. 4 | |
| 애플리케이션 노트 | Precision Current Sources and Sinks Using Voltage References (Rev. A) | PDF | HTML | 2026. 4. 15 | ||
| e북 | Tips and tricks for designing with voltage references (Rev. A) | 2021. 5. 7 | |||
| 애플리케이션 노트 | Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) | 2019. 12. 11 | |||
| 선택 가이드 | 431 Device Nomenclature (Rev. B) | 2019. 9. 18 | |||
| e북 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019. 6. 28 | |||
| 기술 문서 | Designing for isolated DC/DC converter shunt safety | PDF | HTML | 2015. 8. 29 |
설계 및 개발
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ATL431EVM-001 — ATL431 조정 가능 션트 레귤레이터 평가 모듈
The ATL431EVM-001 evaluation module (EVM) features the functionality and adjustability of the ATL431 by letting you program the cathode voltage with various resistor values. You can also set the cathode current using the various resistors in series with the supply. (...)
SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |