The LM/LM and LM integrated cir- cuits are precision V shunt regulator diodes. These monolithic IC voltage references operate as a. LMN, LMN, LMNV Reference Diode products and disclaimers thereto appears at the end of this data sheet. The LM/LM/LM integrated circuits are precision V shunt regulator diodes. These monolithic IC voltage references operate as a low .
|Published (Last):||7 April 2006|
|PDF File Size:||8.29 Mb|
|ePub File Size:||2.4 Mb|
|Price:||Free* [*Free Regsitration Required]|
A user-programmable output current limit can set output current from 10mA to mA thereby minimizing the need to oversize external components and protecting high impedance sources. Applications include industrial and medical equipment, and networking and telecom systems. For less demanding dimming requirements, the CTRL pin can be dstasheet to offer a The LTC is a V input-capable synchronous buck converter that delivers up to mA of continuous output current.
With a VIN range of 4. The LTM features protection functions for overcurrent and overvoltage conditions and the internal temperature of the device can be monitored via an internal temperature sensing diode. Internal circuitry automatically selects the conversion ratio datasneet The LTC utilises internal synchronous rectification and a programmable peak current-mode design to optimize efficiency over a broad range of output currents.
The LTM permits output voltage tracking for sequencing multiple rails in a system. The LTM converts input supplies ranging from 4. Its peak current mode architecture offers excellent line and load transient response. To protect the load, the LTM features output overvoltage and overcurrent protection. Their constant frequency, current-mode architecture datasheft switching noise while offering very fast line and load transient response. All pricing is for 1, piece quantities.
This enables automatic correction of voltage errors caused by datasheeg across PCB traces, which is valuable for powering loads such as FPGAs requiring high currents at low voltages.
The LTC can be programmed with fixed output voltages of 1. For applications requiring large input-to-output differentials, the LT offers a very compact and thermally datsheet solution. The LTC is a high efficiency, 17V input capable synchronous buck regulator that delivers up to 1A of continuous output current to outputs as low as 0.
National Semiconductor – datasheet pdf
The constant 1MHz switching frequency datashee low noise and high efficiency, while minimizing the size of the external components. The LTC version offers eight fixed output voltages from 2. With options for Burst Mode operation for the highest conversion efficiency at light load and pulse-skipping operation for lower output voltage ripple, gives users the option to personalize a circuit’s performance.
Its fixed frequency, current mode architecture offers stable operation over a wide range of supply and output voltages. It is housed in a low height profile 4. The low noise buck-boost topology provides a continuous transition through all of the operating modes, making it ideal for applications that must maintain a constant output voltage, even as the input source voltage transitions through the output voltage.
Robust open and short-circuit protection maximize overall system reliability. A with no load, 4? The LTC is a high efficiency, 2. This device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage from 2.
Datasheet archive on 7-11-2013
The LTC is available in a datashedt 0. Other features include a power good indicator, current-mode control, internal compensation thermal shutdown and output disconnect. Internal protection circuitry includes reverse-battery protection, no reverse current, current limiting with foldback, and thermal limiting.
The two channels run degrees out of phase, minimizing the size of input capacitance. Spread spectrum frequency modulation dataseet EMI emissions, while an datashfet PMOS switch driver delivers robust short-circuit protection in boost and buck-boost topologies.
The combination of its MSOP package with only three tiny externals provides ,m136 highly compact solution footprint for a broad range of applications. The combination of its 2mm x 3mm DFN or MSOP-8 package high switching frequency and tiny, low cost capacitors and inductors ensures a highly compact solution footprint. It operates from an input voltage range of 4. These tiny external capacitors can be used without any necessary series resistance as is common with many other regulators.
A frequency adjust pin permits the user to program the frequency between kHz and 1MHz, optimizing efficiency while minimizing external component size and cost offering a very compact HB LED driver or charger solution.
The LTC’s unique constant frequency architecture with reduced switching edge rates provides lower conducted and radiated noise compared to conventional switching regulators. Other IC features include low external parts count with ceramic capacitor stability, soft-start circuitry to prevent excessive current flow during startup, plus short circuit and thermal datashee. Show Tabs Hide Tabs.
Quiescent current of only 1. Four devices in parallel can deliver 80A of load current. The output voltage can be set with one resistor from 0. The combination of its thermally enhanced MSOP package and a constant switching frequency up to 3MHz enables the designer to balance printed circuit board solution size with required efficiency.
Multiphase operation reduces input and output ripple as well as the number of input and output capacitors.
Additionally it offers current both input and output current limiting and monitoring for added reliability and design flexibility. Low operating current 18? It can deliver up to mA of continuous output current from each channel at output voltages as low as 0. Additional features include power good voltage monitors, internal compensation, independent soft-start capability for each channel and short-circuit protection.