LTC3407 Series

Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

Part	Mounting Type	Voltage - Input (Max) [Max]	Voltage - Output (Max) [Max]	Output Type	Frequency - Switching	Output Configuration	Voltage - Input (Min) [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Function	Package / Case	Number of Outputs	Supplier Device Package	Voltage - Output (Min/Fixed)	Current - Output
Analog Devices Inc./Maxim Integrated LTC3407AEMSE#PBF	Surface Mount	5.5 V	5 V	Adjustable	1.5 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-MSOP 10-TFSOP Exposed Pad	2	10-MSOP-EP	0.6 V	600 mA
Analog Devices Inc./Maxim Integrated LTC3407EMSE#PBF	Surface Mount	5.5 V	5 V	Adjustable	1.5 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-MSOP 10-TFSOP Exposed Pad	2	10-MSOP-EP	0.6 V	600 mA
Analog Devices Inc./Maxim Integrated LTC3407EDD#TRPBF	Surface Mount	5.5 V	5 V	Adjustable	1.5 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-WFDFN Exposed Pad	2	10-DFN (3x3)	0.6 V	600 mA
Analog Devices Inc./Maxim Integrated LTC3407AEDD-2#TRPBF	Surface Mount	5.5 V	5 V	Adjustable	2.25 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-WFDFN Exposed Pad	2	10-DFN (3x3)	0.6 V	800 mA
Analog Devices Inc./Maxim Integrated LTC3407EMSE-4#PBF	Surface Mount	5.5 V	5 V	Adjustable	2.25 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-MSOP 10-TFSOP Exposed Pad	2	10-MSOP-EP	0.6 V	800 mA
Analog Devices Inc./Maxim Integrated LTC3407AEMSE#TRPBF	Surface Mount	5.5 V	5 V	Adjustable	1.5 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-MSOP 10-TFSOP Exposed Pad	2	10-MSOP-EP	0.6 V	600 mA
Analog Devices Inc./Maxim Integrated LTC3407EMSE-2#PBF	Surface Mount	5.5 V	5 V	Adjustable	2.25 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-MSOP 10-TFSOP Exposed Pad	2	10-MSOP-EP	0.6 V	800 mA
Analog Devices Inc./Maxim Integrated LTC3407EMSE-4#TRPBF	Surface Mount	5.5 V	5 V	Adjustable	2.25 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-MSOP 10-TFSOP Exposed Pad	2	10-MSOP-EP	0.6 V	800 mA
Analog Devices Inc./Maxim Integrated LTC3407EDD-4#PBF	Surface Mount	5.5 V	5 V	Adjustable	2.25 MHz	Positive	2.5 V	85 C	-40 ¯C	Buck	Step-Down	10-WFDFN Exposed Pad	2	10-DFN (3x3)	0.6 V	800 mA
Analog Devices Inc./Maxim Integrated LTC3407IDD-2#TRPBF	Surface Mount	5.5 V	5 V	Adjustable	2.25 MHz	Positive	2.5 V	125 °C	-40 C	Buck	Step-Down	10-WFDFN Exposed Pad	2	10-DFN (3x3)	0.6 V	800 mA

Catalog

Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

Description

The LTC3407-4 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 2.25MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors with a profile ≤1mm. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35Ω, 1.2A 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 noise ripple for low power efficiency. Burst Mode®operation provides high efficiency at light loads, while Pulse Skip Mode provides low noise ripple 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. In shutdown, the device draws <1µA.The LTC3407-4 is identical to the LTC3407-2 except for the reduced power-on reset delay time.IoutFswFeaturesLTC34072x 600mA1.5MHzLTC3407-22x 800mA2.25MHzLTC3407-32x 800mA2.25MHzFixed 1.8V/3.3VLTC3407-42x 800mA2.25MHzReduced POR DelayLTC3407A2x 600mA1.5MHzLow Ripple Burst ModeLTC3407A-22x 800mA2.25MHzLow Ripple Burst ModeApplicationsPDAs/Palmtop PCsDigital CamerasCellular PhonesPortable Media PlayersPC CardsWireless and DSL Modems