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SC1408

Features: • 1.8V to 16.5V input range• Up to 10W output power• Preset 5V or adjustable output• Up to 300kHz switching frequency• 10A max shutdown current• Industrial temperature range• SO-8 or MSOP-8 packageApplication• PDA Power supplies• Batt...

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SeekIC No. : 004485461 Detail

SC1408: Features: • 1.8V to 16.5V input range• Up to 10W output power• Preset 5V or adjustable output• Up to 300kHz switching frequency• 10A max shutdown current• Industr...

SC1408 Data Sheet

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Part Number:
SC1408
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:

• 1.8V to 16.5V input range
• Up to 10W output power
• Preset 5V or adjustable output
• Up to 300kHz switching frequency
• 10A max shutdown current
• Industrial temperature range
• SO-8 or MSOP-8 package




Application

• PDA Power supplies
• Battery powered applications
• Positive LCD Bias generator
• Portable communications (cellular phones)
• Peripheral card supplies
• Industrial power supplies




Pinout

Connection Diagram


Specifications

Parameter Symbol Maximum Units
Input Voltage BST to GND -0.3 to 18 V
Small Signal Ground to Power Ground GND to AGND ±0.1 V
GATE to GND   -0.3 to VBST+0.3 V
FB, SHDN, REF, ISENSE to GND   -0.3 to min. of VBST+0.3 or 5 V
Operating Temperature TA -40 to +85 °C
Junction Temperature Range TJ -40 to +150 °C
Storage Temperature TSTG -65 to +160 °C
Lead Temperature (Soldering) 10 seconds TL +300 °C
Thermal Resistance, Junction to Ambient
SO-8 MSOP-8		 JA 165
206		 °C/W
Thermal Resistance, Junction to Case
SO-8/MSOP-8		 JC 40 °C/W



Description

The SC1408 is a low voltage boost controller that operates from a 1.8V to 16.5V input range. A shutdown pin allows the user to turn the controller off reducing supply current to less than 2A typical. Output voltage can be preset to 5V or is adjustable from 3V to 16.5V with a resistor divider. The controller changes frequency in low load conditions to improve efficiency.

The SC1408 was designed for two cell Alkaline or single cell Lithium Ion battery applications. With the proper external components it can be used as a boost converter or a buck/boost converter.

A current sense is implemented with an external resistor that is not in the load current path.

The SC1408 operates in "bootstrapped" mode. When the input voltage to the device is less than 2.5V during startup, a low voltage 50% fixed duty cycle oscillator is switched in to initiate boost action.




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