Analog Devices Inc. LTC36xx/LTC7149 시리즈 강압 벅 레귤레이터

Linear Technology/Analog Devices LTC36xx/LTC7149 시리즈 동기식 강압 벅 레귤레이터는 고효율의 모놀리식 레귤레이터로서 인버팅 출력 응용 분야에 탁월합니다. LTC3623 및 LTC3600은 단일 외부 저항으로 프로그래밍됩니다. LTC3649 및 LTC7149는 단일 저항기 기능의 프로그래밍 가능 출력 전압이 특징이며, 폭넓은 V_OUT 범위에서 고효율을 달성합니다.

LTC7149에는 3.4~60V의 입력 전압 범위에서 작동하는 인버팅 레귤레이터가 포함되어 있습니다. LTC3649의 입력 전압 범위는 3.1~60V입니다. LTC3623 및 LTC3600의 작동 전압 범위는 4~15V입니다.

LTC7149와 LTC3649는 과도 응답과 고유한 사이클-사이클 전류 제한 보호 기능을 가능하게 하는 피크 전류 모드 아키텍처를 제공합니다. LTC3623 및 LTC3600의 작동 주파수 범위는 200kHz~4MHz이며 고강압 비율 응용 분야에 적합한 고유한 계수 온 타임 아키텍처가 있습니다.

특징

LTC7149
- 3.4V to 60V V_IN range
- 0V to -28V V_OUT range
- Single resistor V_OUT programming
- Integrated 110mΩ top N-channel/50mΩ bottom n-channel MOSFETs
- 440µA regulated IQ
- 15µA shutdown IQ
- Board GND referenced I/O pins (RUN, PGOOD, MODE/SYNC)
- Accurate resistor programmable frequency (300kHz to 3MHz) with ±50% frequency sync range
- 92% efficiency with 12 V_IN and -5V_OUT
- ±0.8% output voltage accuracy
- Peak current mode operation
- Burst Mode® operation, forced continuous mode
- Programmable soft-start
- Overtemperature protection
- Available in 28-lead (4mm x 5mm) QFN and TSSOP packages
LTC3649
- 3.1V to 60V V_IN range
- 0V to V_IN-0.5V V_OUT range
- Single resistor V_OUT programming
- Integrated 110mΩ top N-channel/50mΩ bottom n-channel MOSFETs
- 95% efficiency with 12V_IN and 5V_OUT
- 440µA regulated IQ
- 18µA shutdown IQ
- Accurate current monitoring (±4%) without sensor resistor
- Accurate resistor programmable frequency (300kHz to 3MHz) with ±50% frequency sync range
- Accurate programmable output current
- Input voltage regulation for MPPT applications
- ±0.8% output voltage accuracy
- Peak current mode operation
- Programmable wire drop compensation
- Burst Mode operation, forced continuous mode
- Internal compensation and programmable soft-start
- Overtemperature protection
- Available in thermally enhanced 28-lead (4mm x 5mm) QFN and TSSOP packages
LTC3623
- 0V to V_IN - 0.5V V_OUT range
- Silent Switcher® architecture
- Tight V_OUT regulation across V_OUT range
- ±5% output current monitor accuracy
- Programmable wire drop compensation
- Easy to parallel for higher current and heat spreading
- Input supply voltage regulation loop
- Up to 96% efficiency
- ±5A output current
- Integrated N-MOSFETs (60mΩ top and 30mΩ bottom)
- 400kHz to 4MHz adjustable switching frequency
- 4V to 15V V_IN range
- Current mode operation for excellent line and load transient response
- Shutdown mode draws less than 1µA supply current
- Low profile 24-lead 3mm x 5mm QFN package

LTC3600
- Single resistor programmable V_OUT
- Tight V_OUT regulation independent of V_OUT voltage
- Easy to parallel for higher current and heat spreading
- 0V to V_IN - 0.5V V_OUT range
- Up to 96% high efficiency
- 1.5A output current
- 200kHz to 4MHz adjustable frequency
- 4V to 15V V_IN range
- Current mode operation for excellent line and load transient response
- Zero supply current in shutdown
- Available in thermally enhanced 12-pin (3mm x 3mm) DFN and MSOP packages
LTC3607
- Up to 96% efficiency
- 55µA total quiescent current
- 2.25MHz constant frequency operation
- 100% duty cycle dropout operation
- Low-ripple (typical 30mVP-P) Burst Mode operation
- Peak current-mode control architecture for excellent line and load transient response
- 4.5V to 15V voltage input range
- 600mA/channel rated output current
- 0.6V reference allows low output voltages
- ±1.5% output voltage accuracy
- IQ<1µA shutdown current
- Internal compensation
- Power good outputs
- Externally frequency synchronization (1MHz to 4MHz)
- Independent internal soft-start for each channel
- Small 16-lead thermally enhanced thin QFN (3mm x 3mm) and MSE packages