Product Summary

The LTC1911EMS8-1.8#TR is a switched capacitor step-down DC/DC converter that produces a 1.5V or 1.8V regulated output from a 2.7V to 5.5V input. The LTC1911EMS8-1.8#TR uses switched capacitor fractional conversion to achieve high efficiency over the entire input range. No inductors are required. Internal circuitry controls the step-down conversion ratio to optimize efficiency as the input voltage and load conditions vary. Typical efficiency of the LTC1911EMS8-1.8#TR is over 25% higher than that of a linear regulator. Applications are handheld computers, cellular phones, smart card readers, portable electronic equipment, handheld medical instruments, low power dsp supplies.

Parametrics

LTC1911EMS8-1.8#TR absolute maximum ratings: (1)VIN to GND : –0.3V to 6V; (2)SS/SHDN to GND: – 0.3V to (VIN + 0.3V); (3)VOUT Short-Circuit Duration : Indefinite; (4)Operating Temperature Range: –40℃ to 85℃; (5)Storage Temperature Range : –40℃ to 150℃; (6)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1911EMS8-1.8#TR features: (1)Low Noise Constant Frequency Operation; (2)2.7V to 5.5V Input Voltage Range; (3)No Inductors; (4)Typical Efficiency 25% Higher ThaLDOs; (5)ShutdowDisconnects Load from VIN; (6)Output Voltage: 1.8V ±4% or 1.5V ±4%; (7)Output Current: 250mA; (8)Low Operating Current: IIN = 180mA Typ; (9)Low ShutdowCurrent: IIN = 10mA Typ; (10)Oscillator Frequency: 1.5MHz; (11)Soft-Start Limits Inrush Current at TurOn; (12)Short-Circuit and Overtemperature Protected; (13)Available ia8-PiMSOP Package.

Diagrams

LTC1911EMS8-1.8#TR pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC1911EMS8-1.8#TR
LTC1911EMS8-1.8#TR


IC REG BUCK 1.8V 0.25A 8MSOP

Data Sheet

0-5000: $1.52
LTC1911EMS8-1.8#TRPBF
LTC1911EMS8-1.8#TRPBF


IC REG BUCK 1.8V 0.25A 8MSOP

Data Sheet

0-2500: $1.46