전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

UC1823

활성

고속 PWM 컨트롤러

제품 상세 정보

Vin (max) (V) 20 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Buck, Flyback, Forward Rating Military Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 85
Vin (max) (V) 20 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Buck, Flyback, Forward Rating Military Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 85
CDIP (J) 16 135.3552 mm² 19.56 x 6.92 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • Compatible with Voltage or Current-Mode Topologies
  • Practical Operation @ Switching Frequencies to 1.0MHz
  • 50ns Propagation Delay to Output
  • High Current Totem Pole Output (1.5A peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic with Double Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Max. Duty Cycle Control
  • Under-Voltage Lockout with Hysteresis
  • Low Start Up Current (1.1mA)
  • Trimmed Bandgap Reference (5.1V ±1%)
  • Compatible with Voltage or Current-Mode Topologies
  • Practical Operation @ Switching Frequencies to 1.0MHz
  • 50ns Propagation Delay to Output
  • High Current Totem Pole Output (1.5A peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic with Double Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Max. Duty Cycle Control
  • Under-Voltage Lockout with Hysteresis
  • Low Start Up Current (1.1mA)
  • Trimmed Bandgap Reference (5.1V ±1%)

The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage-mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the output is high impedance. The current limit reference (pin 11) is a DC input voltage to the current limit comparator. Consult specifications for details.

These devices feature a totem pole output designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is defined as a high level.

The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage-mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the output is high impedance. The current limit reference (pin 11) is a DC input voltage to the current limit comparator. Consult specifications for details.

These devices feature a totem pole output designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is defined as a high level.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
TL494 활성 40V, 0.2A 300KHz PWM 컨트롤러 Supports push-pull topology

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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3개 모두 보기
유형 직함 날짜
* Data sheet High Speed PWM Controller datasheet (Rev. B) 2009/08/05
* SMD UC1823 SMD 5962-89905 2016/06/21
Application note U-131 Simple Switchmode Lead-Acid Battery Charger 1999/09/05

설계 및 개발

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패키지 CAD 기호, 풋프린트 및 3D 모델
CDIP (J) 16 Ultra Librarian
LCCC (FK) 20 Ultra Librarian

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

지원 및 교육

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