Product Summary

The ltc1877ems8 is a high efficiency monolithic synchronous buck regulator. For noise sensitive applications the device can be externally synchronized from 400kHz to 700kHz.

Parametrics

Absolute maximum ratings: (1)Input Supply Voltage:–0.3V to 12V; (2)ITH, PLL LPF Voltage:–0.3V to 2.7V; (3)RUN, VFB Voltages:–0.3V to VIN; (4)SYNC/MODE Voltage:–0.3V to VIN; (5)SW Voltage:–0.3V to (VIN + 0.3V); (6)P-Channel MOSFET Source Current (DC):800mA; (7)N-Channel MOSFET Sink Current (DC):800mA; (8)Peak SW Sink and Source Current:1.5A; (9)Operating Ambient Temperature Range: Extended Commercial:–40℃ to 85℃; (10)Junction Temperature:125℃; (11)Storage Temperature Range:–65℃ to 150℃; (12)Lead Temperature (Soldering, 10 sec):300℃.

Features

Features: (1)High Efficiency: Up to 95%; (2)Very Low Quiescent Current: Only 10μA During Operation; (3)600mA Output Current at VIN = 5V; (4)2.65V to 10V Input Voltage Range; (5)550kHz Constant Frequency Operation; (6)Synchronizable from 400kHz to 700kHz; (7)Selectable Burst Mode Operation/Pulse Skipping Mode; (8)No Schottky Diode Required; (9)Low Dropout Operation: 100% Duty Cycle; (10)0.8V Reference Allows Low Output Voltages; (11)Shutdown Mode Draws < 1μA Supply Current; (12)±2% Output Voltage Accuracy; (13)Current Mode Control for Excellent Line and Load Transient Response; (14)Overcurrent and Overtemperature Protected; (15)Available in 8-Lead MSOP Package.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LTC1877EMS8
LTC1877EMS8

IC REG BUCK SYNC ADJ 0.6A 8MSOP
Data Sheet
0-2050: $1.84
LTC1877EMS8#PBF
LTC1877EMS8#PBF

IC REG BUCK SYNC ADJ 0.6A 8MSOP
Data Sheet
0-1: $3.70
1-25: $2.45
25-100: $1.85
LTC1877EMS8#TR
LTC1877EMS8#TR

IC REG BUCK SYNC ADJ 0.6A 8MSOP
Data Sheet
0-2500: $1.91
LTC1877EMS8#TRPBF
LTC1877EMS8#TRPBF

IC REG BUCK SYNC ADJ 0.6A 8MSOP
Data Sheet
0-2500: $1.87