Regulator

LP2950-N Datasheet PDF – Low-dropout Voltage Regulator

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Part Number: LP2950-N

Function: Adjustable Micropower Voltage Regulator

Package: TO-252, TO-92 Type

Manufacturer: Texas Instruments

Pinouts:

LP2950-N datasheet

 

Description

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems.

The LP2950-N-5.0 is available in the surface-mount PFM package, and in the popular 3-pin TO-92 package for pin-compatibility with older 5V regulators. The 8-lead LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V, 3V, or 3.3V output (depending on the version), or programmed from 1.24V to 29V with an external pair of resistors.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

Features

• 5V, 3V, and 3.3V Versions Available
• High Accuracy Output Voltage
• Ensured 100 mA Output Current
• Extremely Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Load and Line Regulation
• Very Low Temperature Coefficient
• Use as Regulator or Reference
• Needs Minimum Capacitance for Stability
• Current and Thermal Limiting
• Stable With Low-ESR Output Capacitors (10mΩ to 6Ω)

 

LP2950-N Datasheet PDF Download


LP2950-N pdf

Other data sheets are available within the file: LP2950

STR-X6556 Datasheet PDF – Regulator, Zip 7 Pin – Sanken

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Part Number: STR-X6556

Function: Power IC for quasi-resonant type switching power supply

Package: TO-3PF-7 ZIP Type

Manufacturer: Sanken Electric co.,ltd.

Image :
STR-X6556 image

Description

The STR-X6556 is Power Management IC, Switch Power Module.

Features

1. Multi operation mode, The operation mode switching according to load conditions achieves the optimal high efficiency and low noise power supply systems across the full load range.

2. Current mode control

3. Built-in PWM oscillator, The PWM operates with the minimum frequency of around 22kHz, until the quasi-resonant signal becomes valid, reduces the stress on components at startup and load-shorted.

Applications

1. LCD-TVs, PDP-TVs, CRT-TVs and Digital consumer equipment
2. Home appliances
3. OA equipments
4. Industry machines
5. Communication devices

Pinout :

STR-X6556 Datasheet, STRX6556 Pinout

STR-X6556 Datasheet Information

STR-X6556 pdf

[ strx6556 based smps schematic circuit ]

Other data sheets are available within the file: STRX6556

The STR-X6729 is a quasi-resonant topology IC designed for SMPS applications. It shows lower EMI noise characteristics than conventional PWM solutions, especially at greater than 2 MHz. It also provides a soft-switching mode to turn on the internal MOSFET at close to zero voltage (VDS bottom point) by use of the resonant characteristic of primary inductance and a resonant capacitor.

The package is a fully molded TO-3P, which contains the controller chip (MIC) and MOSFET, enabling output power up to 460 W at 120 VAC input. The bottom-skip mode skips the first bottom of VDS and turns on the MOSFET at the second bottom point, to minimize an increase of operating frequency at light output load, improving system-level efficiency over the entire load range.

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