Product Summary

The LTC1622CMS8#TR is a constant frequency current mode step-down DC/DC controller providing excellent AC and DC load and line regulation. The device incorporates an accurate undervoltage feature that shuts the LTC1622CMS8#TR down when the input voltage falls below 2V. The LTC1622CMS8#TR boasts a ±1.9% output voltage accuracy and consumes only 350mA of quiescent current. The applications of the LTC1622CMS8#TR include 1- or 2-Cell Li-Ion Powered Applications, Cellular Telephones, Wireless Modems, Portable Computers, Distributed 3.3V, 2.5V or 1.8V Power Systems, Scanners, Battery-Powered Equipment.

Parametrics

LTC1622CMS8#TR absolute maximum ratings: (1)Input Supply Voltage (VIN): -0.3V to 10V; (2)RUN/SS Voltage: -0.3V to 2.4V; (3)SYNC/MODE Voltage: -0.3V to VIN; (4)SENSE-Voltage: 2.4V to VIN; (5)PDRV Peak Output Current (<10ms): 1A; (6)Storage Ambient Temperature Range: -65℃ to 150℃; (7)Operating Temperature Range, Commercial: 0℃ to 70℃; Industrial: -45℃ to 85℃; (8)Junction Temperature: 125℃; (9)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1622CMS8#TR features: (1)High Efficiency; (2)Constant Frequency 550kHz Operation; (3)VIN Range: 2V to 10V; (4)Multiampere Output Currents; (5)OPTI-LOOPTM Compensation Minimizes COUT; (6)Selectable, Burst Mode Operation; (7)Low Dropout Operation: 100% Duty Cycle; (8)Synchronizable up to 750kHz; (9)Current Mode Operation for Excellent Line and Load Transient Response; (10)Low Quiescent Current: 350μA; (11)Shutdown Mode Draws Only 15μA Supply Current; (12)±1.9% Reference Accuracy; (13)Available in 8-Lead MSOP.

Diagrams

LTC1622CMS8#TR block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC1622CMS8#TR
LTC1622CMS8#TR


IC REG CTRLR BUCK PWM CM 8-MSOP

Data Sheet

0-5000: $1.35
LTC1622CMS8#TRPBF
LTC1622CMS8#TRPBF


IC REG CTRLR BUCK PWM CM 8-MSOP

Data Sheet

0-2500: $1.34