Product Summary

The LTC1435AIS#TR is a synchronous step-down switching regulator controller that drives external N-channel power MOSFETs using a fixed frequency architecture. A wide duty cycle range of 5% to 99% allows high VIN to low VOUT DC/DC conversion, as well as low dropout operation that extends operating time in battery-operated systems. Burst Mode operation provides high efficiency at low load currents. The applications of the LTC1435AIS#TR include Notebook and Palmtop Computers, PDAs, Cellular Telephones and Wireless Modems, Portable Instruments, Battery-Operated Devices, DC Power Distribution Systems.

Parametrics

LTC1435AIS#TR absolute maximum ratings: (1)Input Supply Voltage (VIN): 36V to -0.3V; (2)Topside Driver Supply Voltage (BOOST): 42V to -0.3V; (3)Switch Voltage (SW): VIN + 5V to -5V; (4)EXTVCC Voltage: 10V to -0.3V; (5)SENSE +, SENSE– Voltages: INTVCC + 0.3V to -0.3V; (6)ITH, VOSENSE Voltages: 2.7V to -0.3V; (7)SFB, Run/SS Voltages: 10V to -0.3V; (8)Peak Driver Output Current < 10ms (TG, BG): 2A; (9)INTVCC Output Current: 50mA; (10)Operating Ambient Temperature Range: 0℃ to 70℃; (11)Junction Temperature (Note 1): 125℃; (12)Storage Temperature Range: -65℃ to 150℃; (13)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1435AIS#TR features: (1)Dual N-Channel MOSFET Synchronous Drive; (2)Programmable Fixed Frequency; (3)Wide VIN Range: 3.5V to 36V Operation; (4)Low Minimum On-Time (≤300ns) for High Frequency, Low Duty Cycle Applications; (5)Very Low Dropout Operation: 99% Duty Cycle; (6)Low Standby Current; (7)Secondary Feedback Control; (8)Programmable Soft Start; (9)Remote Output Voltage Sense; (10)Logic Controlled Micropower Shutdown: IQ < 25mA; (11)Foldback Current Limiting (Optional); (12)Current Mode Operation for Excellent Line and Load Transient Response; (13)Output Voltages from 1.19V to 9V; (14)Available in 16-Lead Narrow SO and SSOP Packages.

Diagrams

LTC1435AIS#TR block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC1435AIS#TR
LTC1435AIS#TR


IC REG CTRLR BUCK PWM CM 16-SOIC

Data Sheet

0-2500: $3.63
LTC1435AIS#TRPBF
LTC1435AIS#TRPBF


IC REG CTRLR BUCK PWM CM 16-SOIC

Data Sheet

0-2500: $3.63