LTC3407-2

Features: ` High Efficiency: Up to 95%` Very Low Quiescent Current: Only 40A` 2.25MHz Constant Frequency Operation` High Switch Current: 1.2A on Each Channel` No Schottky Diodes Required` Low RDS(ON) Internal Switches: 0.35` Current Mode Operation for Excellent Line and Load Transient Response` Sh...

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LTC3407-2 Picture
SeekIC No. : 004402218 Detail

LTC3407-2: Features: ` High Efficiency: Up to 95%` Very Low Quiescent Current: Only 40A` 2.25MHz Constant Frequency Operation` High Switch Current: 1.2A on Each Channel` No Schottky Diodes Required` Low RDS(ON...

floor Price/Ceiling Price

Part Number:
LTC3407-2
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



Features:

` High Efficiency: Up to 95%
` Very Low Quiescent Current: Only 40A
` 2.25MHz Constant Frequency Operation
` High Switch Current: 1.2A on Each Channel
` No Schottky Diodes Required
` Low RDS(ON) Internal Switches: 0.35
` Current Mode Operation for Excellent Line and Load Transient Response
` Short-Circuit Protected
` Low Dropout Operation: 100% Duty Cycle
` Ultralow Shutdown Current: IQ < 1A
` Output Voltages from 5V down to 0.6V
` Power-On Reset Output
` Externally Synchronizable Oscillator
` Small Thermally Enhanced MSOP and 3mm * 3mm DFN Packages



Application

· PDAs/Palmtop PCs
· Digital Cameras
· Cellular Phones
· Portable Media Players
· PC Cards
· Wireless and DSL Modems



Pinout

  Connection Diagram


Specifications

VIN Voltages............................................... 0.3V to 6V
VFB1, VFB2, RUN1, RUN2
    Voltages .....................................0.3V to VIN + 0.3V
MODE/SYNC Voltage ...................... 0.3V to VIN + 0.3V
SW1, SW2 Voltage ......................... 0.3V to VIN + 0.3V
POR Voltage ................................................0.3V to 6V
Ambient Operating Temperature
    Range (Note 2) ................................... 40 to 85
Junction Temperature (Note 5) ............................. 125
Storage Temperature Range ................. 65 to 125
Lead Temperature (Soldering, 10 sec)
    LTC3407-2EMSE only ......................................  300
Reflow Peak Body Temperature ............................ 260



Description

The LTC®3407-2 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 1.2mm. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35, 1.2A power switches provide high efficiency without the need for external Schottky diodes.

A user selectable mode input of LTC3407-2 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 40A. In shutdown, the device draws <1A.




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