전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

벅 펄스 폭 모듈레이터 스텝다운 전압 레귤레이터

UC3578은(는) 새 설계에 권장하지 않습니다.
이 제품은 기존 고객을 위해 계속 제공됩니다. 새로운 설계는 대체 제품을 고려해야 합니다.
open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LM5145 활성 광범위한 입력 전압과 듀티 사이클 범위를 지원하는 75V 동기 벅 컨트롤러 Voltage mode controller with adjustable switching frequency
비교 대상 장치와 유사한 기능
TPSM365R3 활성 3V~65V 입력, 1V~13V 출력, 0.3A 동기 벅 컨버터 전원 모듈 Save board space, simplify design and speed time to market with an integrated-inductor power module.

제품 상세 정보

Vin (min) (V) 11 Vin (max) (V) 72 Iout (max) (A) 0.2 Operating temperature range (°C) 0 to 70 Control mode Voltage mode Rating Catalog Vout (min) (V) 5 Vout (max) (V) 62 Features Enable Iq (typ) (µA) 10000 Duty cycle (max) (%) 100
Vin (min) (V) 11 Vin (max) (V) 72 Iout (max) (A) 0.2 Operating temperature range (°C) 0 to 70 Control mode Voltage mode Rating Catalog Vout (min) (V) 5 Vout (max) (V) 62 Features Enable Iq (typ) (µA) 10000 Duty cycle (max) (%) 100
SOIC (D) 16 59.4 mm² 9.9 x 6
  • Provides Simple Single Inductor Buck PWM Step-Down Voltage Regulation
  • Drives External High Side NMOS Switch
  • 14V to 72V Input Voltage Operating Range
  • Contains 100kHz Internal Oscillator, 2V Reference and UVLO
  • Soft Start on Power Up
  • Overcurrent Shutdown Followed by Soft Start
  • Provides Simple Single Inductor Buck PWM Step-Down Voltage Regulation
  • Drives External High Side NMOS Switch
  • 14V to 72V Input Voltage Operating Range
  • Contains 100kHz Internal Oscillator, 2V Reference and UVLO
  • Soft Start on Power Up
  • Overcurrent Shutdown Followed by Soft Start

The UC3578 is a PWM controller with an integrated high side floating gate driver. It is used in buck step down converters and regulates a positive output voltage. Intended to be used in a distributed power system, the IC allows operation from 14V to 72V input voltage which range includes the prevalent telecomm bus voltages. The output duty cycle of the UC3578 can vary between 0% and 90% for operation over the wide input voltage and load conditions.

The UC3578 simplifies the design of the single switch PWM buck converter by incorporating a floating high side driver for an external N-channel MOSFET switch. It also features a 100kHz fixed frequency oscillator, an internal 2V precision reference, an error amplifier configured for voltage mode operation, and a PWM comparator with latching logic. Complementing the traditional voltage mode control block, the UC3578 incorporates an overcurrent shutdown circuit with full cycle soft re-start to limit the input current to a user defined maximum value during overload operation. Additional functions include an under voltage lockout circuit to insure that sufficient input supply voltage is present before any switching activity can occur.

The UC2578 and the UC3578 are both available in surface mount and thru-hole power packages.

The UC3578 is a PWM controller with an integrated high side floating gate driver. It is used in buck step down converters and regulates a positive output voltage. Intended to be used in a distributed power system, the IC allows operation from 14V to 72V input voltage which range includes the prevalent telecomm bus voltages. The output duty cycle of the UC3578 can vary between 0% and 90% for operation over the wide input voltage and load conditions.

The UC3578 simplifies the design of the single switch PWM buck converter by incorporating a floating high side driver for an external N-channel MOSFET switch. It also features a 100kHz fixed frequency oscillator, an internal 2V precision reference, an error amplifier configured for voltage mode operation, and a PWM comparator with latching logic. Complementing the traditional voltage mode control block, the UC3578 incorporates an overcurrent shutdown circuit with full cycle soft re-start to limit the input current to a user defined maximum value during overload operation. Additional functions include an under voltage lockout circuit to insure that sufficient input supply voltage is present before any switching activity can occur.

The UC2578 and the UC3578 are both available in surface mount and thru-hole power packages.

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기술 자료

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* Data sheet Buck Pulse Width Modulator Stepdown Voltage Regulator datasheet 1999/09/05

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치