RadioLocman.com Electronics ru
Advanced Search +
  

Datasheet Linear Technology LTC7138MPMSE#TRPBF

Manufacturer:Linear Technology
Series:LTC7138
Part Number:LTC7138MPMSE#TRPBF

High Efficiency, 140 V 400 mA Step-Down Regulator

Datasheets

  • Download » Datasheet, PDF, 484 Kb
    Docket ↓
    LTC7138 High Efficiency, 140V 400mA Step-Down Regulator FeaTures DescripTion
    The LTC7138 is a high efficiency step-down DC/DC regulator with internal power switch that draws only 12A typical DC supply current while maintaining a regulated output voltage at no load. The LTC7138 can supply up to 400mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC7138's combination of Burst Mode operation, integrated power switch, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents. With its wide input range of 4V to 140V and programmable overvoltage lockout, the LTC7138 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC7138 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. A feedback comparator output enables multiple LTC7138s to be connected in parallel for higher current applications. The LTC7138 is available in a thermally enhanced high voltage-capable 16-lead MSE package with four missing pins.
    L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Wide Operating Input Voltage Range: 4V to 140V Internal Low Resistance Power MOSFET No Compensation Required Adjustable 100mA to 400mA Maximum Output Current Low Dropout Operation: 100% Duty Cycle Low Quiescent Current: 12A Wide Output Range: 0.8V to VIN 0.8V 1% Feedback Voltage Reference Precise RUN Pin Threshold Internal or External Soft-Start Programmable 1.8V, 3.3V, 5V or Adjustable Output Few External Components Required Programmable Input Overvoltage Lockout Thermally Enhanced High Voltage MSOP Package applicaTions n Industrial Control Supplies Medical Devices Distributed Power Systems Portable Instruments Battery-Operated Devices Avionics Automotive Typical applicaTion
    5V to 140V Input to 5V Output, 400mA Step-Down Regulator
    VIN 5V TO 140V C IN 1F 250V L1 220H VIN LTC7138 ANODE RUN SS VPRG1 VFB OVLO VPRG2 GND SW VOUT 5V COUT 400mA 22F Efficiency and Power Loss vs Load Current
    100 90 80 EFFICIENCY (%) 70 60 50 40 30 20
    7138 TA01a EFFICIENCY POWER LOSS (mW) 1000 100 10 POWER LOSS 10 0 0.1 1 VIN = 12V VIN = 48V VIN = 140V 10 100 LOAD CURRENT (mA) 1 1000
    7138f 7138 TA01b For more information www.linear.com/LTC7138 1 LTC7138 absoluTe MaxiMuM raTing ...

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck

Other Names: LTC7138MPMSETRPBF, LTC7138MPMSE TRPBF

Docket:
LTC7138 High Efficiency, 140V 400mA Step-Down Regulator FeaTures DescripTion
The LTC7138 is a high efficiency step-down DC/DC regulator with internal power switch that draws only 12A typical DC supply current while maintaining a regulated output voltage at no load. The LTC7138 can supply up to 400mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC7138's combination of Burst Mode operation, integrated power switch, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents. With its wide input range of 4V to 140V and programmable overvoltage lockout, the LTC7138 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC7138 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. A feedback comparator output enables multiple LTC7138s to be connected in parallel for higher current applications. The LTC7138 is available in a thermally enhanced high voltage-capable 16-lead MSE package with four missing pins.
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Wide Operating Input Voltage Range: 4V to 140V Internal Low Resistance Power MOSFET No Compensation Required Adjustable 100mA to 400mA Maximum Output Current Low Dropout Operation: 100% Duty Cycle Low Quiescent Current: 12A Wide Output Range: 0.8V to VIN 0.8V 1% Feedback Voltage Reference Precise RUN Pin Threshold Internal or External Soft-Start Programmable 1.8V, 3.3V, 5V or Adjustable Output Few External Components Required Programmable Input Overvoltage Lockout Thermally Enhanced High Voltage M...

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus