Datasheet Linear Technology LTC3832EGN#PBF

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LTC3832-1

Design Notes

• Download
  High Current Step-Down Controller Regulates to 0.6V Output from 3V Input &mdash DN322
  PDF, 83 Kb, File published: Oct 1, 2003
  Extract from the document

  advertisement High Current Step-Down Controller Regulates to 0.6V Output
  from 3V Input – Design Note 322
  Charlie Zhao and Wei Chen The LTC3832 uses a synchronous switching architecture with external N-channel MOSFETs. An adjustable
  current limit is provided by sensing the current through
  the drain-source on-resistance of the top MOSFET,
  eliminating the need for a current sense resistor. The
  LTC3832 has a 300kHz free-running switching frequency
  that can be programmed or synchronized externally
  from 100kHz to 500kHz. All of these features promote
  a DC/DC converter solution with high efficiency and
  small size.
  The LTC3832 also includes a thermal protection circuit which disables both gate drivers if the junction
  temperature reaches 150В°C. The chip resumes normal
  operation when the temperature drops below 125В°C.
  Design Examples
  Figure 1 shows the schematic diagram and photo of a
  compact 1V/7A step-down DC/DC converter that accepts
  2.2ОјF 10О© 0.01ОјF LTC3832-1
  SS VCC/PVCC2
  COMP G1 15k
  GND MBR0520T1 VIN = 5V
  VOUT = 1V 95
  90 …

Articles

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  Versatile LTC3830 and LTC3832 Deliver High Efficiency for Step-Down, Step-Up and Inverting Power Conversions &mdash LT Journal
  PDF, 62 Kb, File published: May 1, 2002
  Extract from the document

  DESIGN IDEAS Versatile LTC3830 and LTC3832 Deliver
  High Efficiency for Step-Down, Step-Up
  and Inverting Power Conversions
  by Wei Chen and Charlie Zhao
  Introduction
  The LTC3830 and the LTC3832 are
  pin-to-pin compatible upgrades to the
  LTC1430—a popular IC for low voltage step-down applications due to its
  simplicity and high efficiency. The
  LTC3830 and the LTC3832 remove
  the LTC1430’s frequency foldback at
  startup, thus eliminating inrush current and resulting output overshoot.
  Other improvements over the
  LTC1430 include tighter gm distribu-+
  D3
  MBR0520LT1
  DZ
  MMSZ5242B
  5V +
  PVCC1 PVCC2 +
  2.2ВµF SENSE +
  SENSE –
  NC Doug La Porte Tiny and Efficient Boost Converter …

Model Line

Manufacturer's Classification

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers

Other Names:

LTC3832EGNPBF, LTC3832EGN PBF