UCC3809-1
- User Programmable Soft Start With Active Low Shutdown
- User Programmable Maximum Duty Cycle
- Accessible 5V Reference
- Undervoltage Lockout
- Operation to 1MHz
- 0.4A Source/0.8A Sink FET Driver
- Low 100µA Startup Current
The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.
The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | Economy Primary Side Controller datasheet (Rev. B) | 2004/11/19 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| User guide | 10-Watt Flyback Converter Utilizing the UCC3809 (Rev. B) | 2001/09/14 | ||
| User guide | U-165 Reference Design: Isolated 50 Watt Flyback Converter Using | 2001/06/20 | ||
| Application note | Programming the UCC3809 for 90% Maximum Duty Cycle Clamp | 2001/06/04 | ||
| Application note | DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode | 1999/09/05 | ||
| Application note | DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers | 1999/09/05 | ||
| Application note | U-165 Design Rvw: Isolated 50 W Flyback Converter Using UCC3809 and UC3965 | 1999/09/05 | ||
| Application note | U-168 Implementing a Practical Off-line Lithium-Ion Charger Using the UCC3809 | 1999/09/05 |
설계 및 개발
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UCC3809EVM — UCC3809 평가 모듈
The UCC3809EVM evaluation module is an isolated 10-W, 3.3-V converter designed for telecom input voltages, nominally -48 Vdc, but ranging from -32 Vdc to -75 Vdc. The UCC3809 economy primary-side controller is used as the pulse-width modulator (PWM), combined with a TLV431 low-voltage (...)
UCC1/2/3809-1 TINA-TI Transient Reference Design
UCCx809-1 Family Unencrypted PSpice Transient Model Package (Rev. A)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| SOIC (D) | 8 | 옵션 보기 |
| VSSOP (DGK) | 8 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치