TLVH432
- Low-voltage operation: down to 1.24V
- Reference voltage tolerances at 25°C
- 0.5% for B grade
- 1% for A grade
- 1.5% for standard grade
- Adjustable output voltage, VO = VREF to 18V
- Wide operating cathode current range: 100µA to 70mA
- 0.25Ω typical output impedance
- –40°C to +125°C specifications
- TLVH432 provides alternative pinouts for SOT-23-3 and SOT-89 packages
- Ultra-small SC-70 package offers 40% smaller footprint than SOT-23-3
The TLVH431 and TLVH432 devices are low-voltage 3-terminal adjustable voltage references, with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24V) and 18V with two external resistors (see Figure 6-2). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLVH431 and TLVH432 devices are an excellent choice for voltage references in isolated feedback circuits for 3V to 3.3V switching-mode power supplies. The devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 and TLVH432 devices excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
The TLVH432 device is identical to the TLVH431 device, but is offered with different pinouts for the 3-pin SOT-23 and SOT-89 packages.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TLVH431, TLVH432 Low-Voltage Adjustable Precision Shunt Regulators datasheet (Rev. N) | PDF | HTML | 2024. 6. 6 | |
| 애플리케이션 노트 | Optimization of a Shunt Reference for Flyback Converters | PDF | HTML | 2023. 10. 18 | ||
| 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 | |||
| 애플리케이션 노트 | Setting the shunt voltage on an adjustable shunt regulator | 2011. 9. 1 | |||
| 추가 자료 | SLL Precision Reference Product Clip | 2006. 2. 23 |
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
PMP23445 — 120VAC~3.3VDC, 0.5A 커플 인덕터 벅 컨버터 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |
| SOT-89 (PK) | 3 | Ultra Librarian |