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Linear Technology/Analog Devices LTC781x Synchronous Boost Buck Controllers are high-performance, low-quiescent current 38V and 60V DC-DC switching regulator controllers. The LTC781x Controllers drive the N-channel power MOSFET stages. The design includes independent step-up (boost) and step-down (buck) controllers. These independent boost and buck controllers can regulate two separate outputs. When cascaded, the independent boost and buck controllers regulate the output voltage from the input voltage. The input voltage can be above, below or equal to the output voltage.
LTC781x's cascaded boost-buck solution delivers a fast transient response using continuous, non-pulsating input and output currents. The continuous, non-pulsating, input and output currents substantially reduce voltage ripple and EMI. LTC781x's low voltage ripple and reduced EMI make the controllers ideal for industrial, automotive, and high-power, battery-operated systems.
The LTC781x Controllers operate from a 4.5V to 60V input supply and can maintain performance down to 2.2V after start-up. The controllers extend the operating run time in battery-powered systems with no-load quiescent current as low as 33μA.
Features
Synchronous Boost and Buck Controllers
When Cascaded, Allows VIN Above, Below or Equal to Regulated VOUT
Output Remains in Regulation Through Input Dips (e.g., Cold Crank) Down to 2.2V
Wide Bias Input Voltage Range: 4.5V to 60V
Low Input and Output Ripple
Low EMI
Fast Output Transient Response
High Light Load Efficiency
Low Operating IQ
Low Operating IQ: 33μA (Both Channels On) (LTC7812)
Low Operating IQ: 28μA (Buck Channel On) (LTC7812)
Low Operating IQ: 29μA (One Channel On) (LTC7813)
Low Operating IQ: 34μA (Both Channels On) (LTC7813)
RSENSE or Lossless DCR Current Sensing
Buck Output Voltage Range:
0.8V ≤ VOUT ≤ 24V (LTC7812)
0.8V ≤ VOUT ≤ 60V (LTC7813)
Boost Output Voltage Up to 60V
Phase-Lockable Frequency (75kHz to 850kHz)
Small 32-Pin 5mm × 5mm QFN Package
Applications
Automotive and Industrial Power Systems
High Power Battery Operated Systems
LTC7813EUH#PBF
LTC7813IUH#TRPBF
LTC7813MPUH#PBF
LTC7813EUH#TRPBF
LTC7813IUH#PBF
LTC7813HUH#PBF
LTC7813HUH#TRPBF
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LTC7813EUH#PBF制造商: Analog Devices Inc.
產品種類: 開關控制器
RoHS: 詳細信息
拓撲結構: Boost, Buck
輸出端數量: 2 Output
開關頻率: 850 kHz
占空比 - 最大: 100 %
輸入電壓: 4.5 V to 60 V
輸出電壓: 0.8 V to 60 V
輸出電流: 20 A
最小工作溫度: - 40 C
最大工作溫度: + 125 C
安裝風格: SMD/SMT
封裝 / 箱體: QFN-32
資格: AEC-Q100
絕緣: Non-Isolated
輸出類型: Adjustable
產品: Non-Isolated / POL
系列: LTC7813
商標: Analog Devices / Linear Technology
工作電源電流: 0.034 mA
工廠包裝數量: 73
單位重量: 66 mg
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