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LTC3405

Features: ·High Efficiency: Up to 96%·Very Low Quiescent Current: Only 20mA During Operation·300mA Output Current at VIN = 3V·2.5V to 5.5V Input Voltage Range·1.5MHz Constant Frequency Operation·No Schottky Diode Required·Low Dropout Operation: 100% Duty Cycle·0.8V Reference Allows Low Output Volt...

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SeekIC No. : 004402200 Detail

LTC3405: Features: ·High Efficiency: Up to 96%·Very Low Quiescent Current: Only 20mA During Operation·300mA Output Current at VIN = 3V·2.5V to 5.5V Input Voltage Range·1.5MHz Constant Frequency Operation·No ...

LTC3405 Data Sheet

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Part Number:
LTC3405
Supply Ability:
5000

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

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Product Details

Description



Features:

·High Efficiency: Up to 96%
·Very Low Quiescent Current: Only 20mA During Operation
·300mA Output Current at VIN = 3V
·2.5V to 5.5V Input Voltage Range
·1.5MHz Constant Frequency Operation
·No Schottky Diode Required
·Low Dropout Operation: 100% Duty Cycle
·0.8V Reference Allows Low Output Voltages
·Shutdown Mode Draws <1mA Supply Current
·±2% Output Voltage Accuracy
·Current Mode Operation for Excellent Line and Load Transient Response
·Overtemperature Protected
·Low Profile (1mm) ThinSOTTM Package


Application

·Cellular Telephones
·Personal Information Appliances
·Wireless and DSL Modems
·Digital Still Cameras
·MP3 Players
·Portable Instruments


Pinout

Connection Diagram


Specifications

Input Supply Voltage .................................. 0.3V to 6V
MODE, RUN, VFB Voltages ........................... 0.3V to VIN
SW Voltage ................................... 0.3V to (VIN + 0.3V)
P-Channel Switch Source Current (DC) .................. 400mA
N-Channel Switch Sink Current (DC) ...................... 400mA
Peak SW Sink and Source Current .......................... 630mA
Operating Temperature Range (Note 2) ..40°C to 85°C
Junction Temperature (Note 3) ............................... 125°C
Storage Temperature Range ................ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)....................  300°C


Description

The LTC®3405 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20mA and drops to <1mA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3405 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.

Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.8V feedback reference voltage. The LTC3405 is available in a low profile (1mm) ThinSOT package.




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