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 .

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Applications include industrial and medical equipment, and networking and telecom systems. The LTC is a synchronous buck-boost converter that delivers up to mA of continuous output current from a wide variety of input sources including single or multiple-cell batteries as well as solar panels and supercaps.

The LTC version offers eight fixed output voltages from 2. The LTC is a high efficiency, 2. A frequency adjust pin permits the user to program the frequency between kHz and 1MHz, optimizing datashedt while minimizing external component size and cost offering a very compact HB LED driver or charger solution.

It operates from an input voltage range of 4. The output voltage can be set with one resistor from 0. These tiny external capacitors can be used without any necessary series resistance as is common with many other regulators. For less demanding dimming requirements, the CTRL pin can be used to offer a Robust open and short-circuit protection maximize overall system reliability. For applications requiring large input-to-output differentials, the LT offers datasueet very compact and thermally effective solution.

This enables automatic correction of voltage errors caused by droop across PCB traces, which is valuable for powering loads such as FPGAs requiring high currents at low voltages.

Multiphase operation reduces input and output ripple as well as the number of input and output capacitors. Low operating current 18? Applications include point-of-load conversion from 12V or 5V inputs in telecom, industrial, avionics and test equipment. All pricing is for 1, piece quantities. With options for Burst Mode operation for the highest datasheer efficiency at light load and pulse-skipping operation for lower output voltage ripple, gives users the option to personalize a circuit’s performance.


Systems designers value pin compatibility since they can interchange these products without layout changes at any stage from development to production. 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.

It is housed in a low height profile 4. Show Tabs Hide Tabs. The LTC utilises internal synchronous rectification and a programmable peak current-mode design to optimize efficiency over a broad range of output currents. The constant 1MHz switching frequency ensures low noise and high efficiency, while minimizing the size of the external components.

The LTC is a versatile mA high voltage buck-boost charge pump. Datashret circuitry automatically selects the conversion ratio 2: With a VIN range of 4.

Datasheet archive on 7-11-2013

This device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage from 2. A with no load, 4?

Their constant frequency, current-mode architecture minimizes switching noise while offering very fast line and load transient response. The LTC’s unique datazheet frequency architecture with reduced switching edge rates provides lower conducted and datashete noise compared to conventional switching regulators.

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. The LTC can be programmed with fixed output voltages of 1. 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 protection.


Internal protection circuitry includes reverse-battery protection, no reverse current, current limiting with foldback, and thermal limiting. Spread spectrum frequency modulation reduces EMI emissions, while an internal PMOS switch driver delivers robust short-circuit protection in boost and buck-boost topologies.

LM (NSC) PDF技术资料下载 LM 供应信息 IC Datasheet 数据表 (6/12 页)

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. The LTC accommodates an input voltage range of 4. The combination of its thermally enhanced MSOP package and a constant switching frequency datasneet to 3MHz enables the designer to balance printed circuit board solution size with required efficiency.

It also includes programmable maximum power point control MPPC capability, ensuring maximum power extraction from non-ideal power sources such as photovoltaic dattasheet. The LTC is available in a low-profile 0. To protect the load, the LTM features output overvoltage and overcurrent protection.

Four devices in parallel can deliver 80A of load current. Its constant switching frequency of 2. Additionally it ,m136 current both input and output current limiting and monitoring for added reliability and design flexibility.

Other features include a power good indicator, current-mode control, internal compensation thermal shutdown and output disconnect. The combination of its MSOP package with only three tiny externals provides a highly compact solution footprint for a broad range of applications. For applications that require the lowest possible noise, the LTC can be configured to run in pulse-skipping mode, reducing noise and potential RF interference. This H-grade version is ideal for automotive, industrial and military applications that are subject to high ambient temperatures.