Product Summary

The LTC3405AES6 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20μA and drops to <1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3405A ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.

Parametrics

Absolute maximum ratings: (1)Input Supply Voltage: – 0.3V to 6V; (2)MODE, RUN, VFB Voltages: – 0.3V to VIN; (3)SW Voltage: – 0.3V to (VIN + 0.3V); (4)P-Channel Switch Source Current (DC): 400mA; (5)N-Channel Switch Sink Current (DC): 400mA; (6)Peak SW Sink and Source Current: 630mA; (7)Operating Temperature Range: –40℃ to 85℃; (8)Junction Temperature: 125℃; (9)Storage Temperature Range: – 65℃ to 150℃; (10)Lead Temperature (Soldering, 10 sec): 300℃.

Features

Features: (1)High Efficiency: Up to 96%; (2)Very Low Quiescent Current: Only 20μA During Operation; (3)300mA Output Current at VIN = 3V; (4)2.5V to 5.5V Input Voltage Range; (5)1.5MHz Constant Frequency Operation; (6)No Schottky Diode Required; (7)Low Dropout Operation: 100% Duty Cycle; (8)Stable with Ceramic Capacitors; (9)0.8V Reference Allows Low Output Voltages; (10)Shutdown Mode Draws < 1μA Supply Current; (11)±2% Output Voltage Accuracy; (12)Current Mode Operation for Excellent Line and Load Transient Response; (13)Overtemperature Protected; (14)Low Profile (1mm) ThinSOTTM Package.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC3405AES6
LTC3405AES6

Other


Data Sheet

Negotiable 
LTC3405AES6#TR
LTC3405AES6#TR


IC REG BUCK SYNC ADJ .3A SOT23-6

Data Sheet

0-5000: $1.18
LTC3405AES6#TRMPBF
LTC3405AES6#TRMPBF


IC REG BUCK SYNC ADJ .3A SOT23-6

Data Sheet

0-1: $2.32
1-25: $2.07
25-100: $1.86
LTC3405AES6#TRPBF
LTC3405AES6#TRPBF


IC REG BUCK SYNC ADJ .3A SOT23-6

Data Sheet

0-2500: $1.18
LTC3405AES6-1.375#TRMPBF
LTC3405AES6-1.375#TRMPBF


IC REG BUCK SYNC 1.38V SOT23-6

Data Sheet

0-500: $1.18
LTC3405AES6#TRM
LTC3405AES6#TRM


IC REG BUCK SYNC ADJ .3A SOT23-6

Data Sheet

Negotiable 
LTC3405AES6-1.5#TRPBF
LTC3405AES6-1.5#TRPBF


IC REG BUCK SYNC 1.5V SOT23-6

Data Sheet

0-2500: $1.18
LTC3405AES6-1.8#TR
LTC3405AES6-1.8#TR


IC REG BUCK SYNC 1.8V SOT23-6

Data Sheet

0-5000: $1.18