(Hong Kong)
Product Summary
The LTC1435ACS 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 LTC1435ACS include Notebook and Palmtop Computers, PDAs, Cellular Telephones and Wireless Modems, Portable Instruments, Battery-Operated Devices, DC Power Distribution Systems.
Parametrics
LTC1435ACS 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
LTC1435ACS 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
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 LTC1435ACS |
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IC REG CTRLR BUCK PWM CM 16-SOIC |
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LTC1435ACS#PBF |
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IC REG CTRLR BUCK PWM CM 16-SOIC |
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LTC1435ACS#TR |
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IC REG CTRLR BUCK PWM CM 16-SOIC |
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LTC1435ACS#TRPBF |
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IC REG CTRLR BUCK PWM CM 16-SOIC |
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