홈 전원 관리 LED 드라이버 백라이트 LED 드라이버
홈
전원 관리
LED 드라이버
백라이트 LED 드라이버

TPS61185

활성

PWM 제어 인터페이스를 지원하는 노트북용 2A WLED 드라이버

지금 주문
데이터 시트

TPS61185

활성
데이터 시트 지금 주문

제품 상세 정보

Number of channels 8 Vin (min) (V) 4.2 Vin (max) (V) 24 Vout (min) (V) 5 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 2000 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 8 Vin (min) (V) 4.2 Vin (max) (V) 24 Vout (min) (V) 5 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 2000 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
VQFN (RGE) 24 16 mm² 4 x 4
  • 4.2 V to 24 V Input Voltage
  • Integrated 2 A/40 V MOSFET
  • 600 kHz to 2 MHz Programmable Switching Frequency
  • Adaptive Boost Output for Best Efficiency
  • Design to Use Small L-C Components
  • Integrated Loop Compensation
  • Eight 25 mA Current Sinks
  • Up to 10 WLED in Series
  • 1% Current Matching and Accuracy
  • PWM Brightness Interface Control
  • 200 mV Ripple Under PWM Dimming
  • Driver for Input/Output Isolation PFET
  • Programmable Over Voltage Threshold
  • 100 Hz to 5 kHz Programmable PWM Dimming Frequency
  • Up to 20 kHz Direct PWM Dimming Frequency
  • Enhanced Electrostatic Discharge Immunity Level
  • Built-in WLED Open/Short Protection
  • Over Temperature Protection
  • 24 Pin 4 mm × 4 mm QFN Package
  • APPLICATIONS
    • Notebook LCD Display Backlight
  • 4.2 V to 24 V Input Voltage
  • Integrated 2 A/40 V MOSFET
  • 600 kHz to 2 MHz Programmable Switching Frequency
  • Adaptive Boost Output for Best Efficiency
  • Design to Use Small L-C Components
  • Integrated Loop Compensation
  • Eight 25 mA Current Sinks
  • Up to 10 WLED in Series
  • 1% Current Matching and Accuracy
  • PWM Brightness Interface Control
  • 200 mV Ripple Under PWM Dimming
  • Driver for Input/Output Isolation PFET
  • Programmable Over Voltage Threshold
  • 100 Hz to 5 kHz Programmable PWM Dimming Frequency
  • Up to 20 kHz Direct PWM Dimming Frequency
  • Enhanced Electrostatic Discharge Immunity Level
  • Built-in WLED Open/Short Protection
  • Over Temperature Protection
  • 24 Pin 4 mm × 4 mm QFN Package
  • APPLICATIONS
    • Notebook LCD Display Backlight

The TPS61185 IC provides highly integrated solutions for large-size LCD backlighting. This device has a built-in high efficiency boost regulator with integrated 2 A/40 V power MOSFET. The eight current sink regulators provide high precision current regulation and matching. In total, the device can support up to 80 LEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.

The TPS61185 supports the PWM method for brightness dimming. Simply tie the unused current sinks to ground if fewer than eight are needed. During PWM dimming, each of the eight current regulators is turned on/off at the duty cycle determined by an external pulse width modulation (PWM) signal input to the PWM pin. The frequency at which each current regulator turns on/off follows the input PWM signal on the PWMIN pin if the MODE pin is grounded. If the MODE pin is left floating or tied high, the regulators turn on/off at the frequency programmed by an external resistor on the FPWMO pin.

The TPS61185 IC supports boost switch frequency programming from 600kHz to 2MHz by an external resistor on the FSW pin. The device also provides a driver output for an optional external PFET connected between the input and inductor for truly disconnecting the battery from LED during the shutdown or fault protection. The device integrates resistor programmable over-voltage protection, soft-start, and thermal shutdown.

The TPS61185 IC has a built-in linear regulator to power the internal circuits of the IC. The device is in a 4 mm × 4 mm QFN package.

The TPS61185 IC provides highly integrated solutions for large-size LCD backlighting. This device has a built-in high efficiency boost regulator with integrated 2 A/40 V power MOSFET. The eight current sink regulators provide high precision current regulation and matching. In total, the device can support up to 80 LEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.

The TPS61185 supports the PWM method for brightness dimming. Simply tie the unused current sinks to ground if fewer than eight are needed. During PWM dimming, each of the eight current regulators is turned on/off at the duty cycle determined by an external pulse width modulation (PWM) signal input to the PWM pin. The frequency at which each current regulator turns on/off follows the input PWM signal on the PWMIN pin if the MODE pin is grounded. If the MODE pin is left floating or tied high, the regulators turn on/off at the frequency programmed by an external resistor on the FPWMO pin.

The TPS61185 IC supports boost switch frequency programming from 600kHz to 2MHz by an external resistor on the FSW pin. The device also provides a driver output for an optional external PFET connected between the input and inductor for truly disconnecting the battery from LED during the shutdown or fault protection. The device integrates resistor programmable over-voltage protection, soft-start, and thermal shutdown.

The TPS61185 IC has a built-in linear regulator to power the internal circuits of the IC. The device is in a 4 mm × 4 mm QFN package.
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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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6개 모두 보기
유형 직함 날짜
* Data sheet WLED Driver for Notebooks with PWM Control Interface datasheet (Rev. A) 2010/05/18
White paper Common LED Functions and LED Driver Design Considerations 2020/09/21
Application note Some Guidelines and Tips for the LED Driver Application 2019/08/14
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018/12/11
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
EVM User's guide TPS61185EVM-335 2010/05/25

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TPS61185EVM-335 — TPS61185 2A WLED 드라이버 IC용 평가 모듈

The TPS61185EVM-335 is a fully assembled and tested circuit for evaluating the TPS61185 Adjustable, 2A WLED Driver IC. If WLEDs are not available for connection to the EVM, the WLEDEVM-260 board can be ordered from TI.
사용 설명서: PDF
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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
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  • 조립 위치

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