LTC1704
Info: : PRODUCTION
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LTC1704

550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $4.94
Features
  • Dual Regulated Outputs: One Switching Regulator and One Linear Regulator
  • Excellent DC Accuracy: ±1.5% for Switcher and ±2% for Linear Regulator
  • External N-Channel MOSFET Architecture
  • No External Current Sense Resistor Required
  • Burst Mode® Operation at Light Load (LTC1704)
  • Continuous Switching at Light Load (LTC1704B)
  • Linear Regulator with Programmable Current Limit
  • Linear Regulator with Programmable Start-Up Delay
  • Low Shutdown Current: <150µA
  • High Efficiency Over Wide Load Current Range
  • PGOOD Flag Monitors Both Outputs
  • Small 16-Pin Narrow SSOP Package
Additional Details
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The LTC1704/LTC1704B include a high power synchronous switching regulator controller plus a linear regulator controller. The switching regulator controller is designed to drive a pair of N-channel MOSFETs in a voltage mode, synchronous buck configuration to provide the main supply. The constant frequency, true PWM architecture switches at 550kHz, minimizing external component size, cost and optimizing load transient performance. The LTC1704 features automatic transition to power saving Burst Mode operation at light loads. The LTC1704B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The linear regulator controller is designed to drive an external NPN power transistor to provide up to 2A of current to an auxiliary load.

The LTC1704/LTC1704B deliver better than ±1.5% DC accuracy at the switcher outputs and ±2% at the linear regulator outputs. High performance feedback loops allow the circuit to keep total output regulation within ±5% under all transient conditions. An open-drain PGOOD output indicates when both outputs are within ±10% of their regulated values.

Applications

  • Multiple Logic Supply Generator
  • Distributed Power Applications
  • High Efficiency Power Conversion
Part Models 4
1ku List Price Starting From $4.94

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

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PRODUCTION

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PRODUCTION

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PRODUCTION

Apr 6, 2022

- 22_0066

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

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PRODUCTION

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Filter by Model

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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

arrow down

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC1704BEGN#PBF

PRODUCTION

LTC1704BEGN#TRPBF

PRODUCTION

LTC1704EGN#PBF

PRODUCTION

LTC1704EGN#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

arrow down

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1704BEGN#PBF

PRODUCTION

LTC1704BEGN#TRPBF

PRODUCTION

LTC1704EGN#PBF

PRODUCTION

LTC1704EGN#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC357A-A

LTC1704EGN | 550kHz Synchronous Buck, Burst Mode With Linear Regulator

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DC357A-B

LTC1704BEGN | 550kHz Synchronous Buck With Linear Regulator

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