Product Summary

The LTC3407AEDD is a dual, constant frequency, synchronous step down DC/DC converter. Intended for low power applications, it operates from 2.5V to 5.5V input voltage range and has a constant 1.5MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35Ω 1A power switches provide high efficiency without the need for external Schottky diodes. A user selectable mode input is provided to allow the user to trade-off ripple noise for low power efficiency. Burst Mode operation provides high efficiency at light loads, while Pulse Skip Mode provides low ripple noise at light loads. To further maximize battery life, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle), and both channels draw a total quiescent current of only 40μA.

Parametrics

Absolute Maximum Ratings: (1)VIN Voltages: -0.3V to 6V; (2)VFB1, VFB2, RUN1, RUN2 Voltages: -0.3V to VIN + 0.3V; (3)MODE/SYNC Voltage: -0.3V to VIN + 0.3V; (4)SW1, SW2 Voltage: -0.3V to VIN + 0.3V; (5)POR Voltage: -0.3V to 6V; (6)Ambient Operating Temperature Range: -40℃ to 85℃; (7)Junction Temperature: 125℃; (8)Storage Temperature Range: -65℃ to 125℃.

Features

Features: (1)High Efficiency: Up to 96%; (2)Very Low Quiescent Current: Only 40μA; (3)1.5MHz Constant Frequency Operation; (4)High Switch Current: 1A on Each Channel; (5)No Schottky Diodes Required; (6)Low RDS(ON) Internal Switches: 0.35Ω; (7)Current Mode Operation for Excellent Line and Load Transient Response; (8)Short-Circuit Protected; (9)Low Dropout Operation: 100% Duty Cycle; (10)Ultralow Shutdown Current: IQ < 1μA; (11)Output Voltages from 5V down to 0.6V; (12)Power On Reset Output; (13)Externally Synchronizable Oscillator; (14)Small Thermally Enhanced MSOP and 3mm × 3mm DFN Packages.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC3407AEDD#PBF
LTC3407AEDD#PBF


IC REG BUCK SYNC ADJ 1A DL 10DFN

Data Sheet

0-1: $3.14
1-25: $2.23
25-100: $1.84
LTC3407AEDD#TRPBF
LTC3407AEDD#TRPBF


IC REG BUCK SYNC ADJ 1A DL 10DFN

Data Sheet

0-2500: $1.87
LTC3407AEDD-2#PBF
LTC3407AEDD-2#PBF


IC REG BUCK SYNC ADJ 1A DL 10DFN

Data Sheet

0-484: $2.08
LTC3407AEDD-2#TRPBF
LTC3407AEDD-2#TRPBF


IC REG BUCK SYNC ADJ 1A DL 10DFN

Data Sheet

0-2500: $2.11