LTC1436A
Info: : PRODUCTION
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LTC1436A

High Efficiency Low Noise Synchronous Step-Down Switching Regulators

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 10
1ku List Price Starting From $7.22
Features
  • Maintains Constant Frequency at Low Output Currents
  • Programmable Fixed Frequency (PLL Lockable)
  • Wide VIN Range: 3.5V to 36V Operation
  • Low Minimum On-Time (≤300ns) for High Frequency, Low Duty Cycle Applications
  • Dual N-Channel MOSFET Synchronous Drive
  • Very Low Dropout Operation: 99% Duty Cycle
  • Low Dropout, 0.5A Linear Regulator for CPU I/O or Low Noise Audio Supplies
  • Built-In Power-On Reset Timer
  • Programmable Soft Start
  • Low-Battery Detector
  • Remote Output Voltage Sense
  • Foldback Current Limiting (Optional)
  • Pin Selectable Output Voltage
  • Logic Controlled Micropower Shutdown: IQ < 25µA
  • Output Voltages from 1.19V to 9V
  • Available in 24-Lead Narrow SSOP and 28-Lead SSOP Packages
Additional Details
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The LTC1436A/LTC1437A are synchronous step-down switching regulator controllers that drive external N-channel power MOSFETs in a phase lockable, fixed frequency architecture. The Adaptive Power output stage selectively drives two N-channel MOSFETs at frequencies up to 400kHz while reducing switching losses to maintain high efficiencies at low output currents.

An auxiliary 0.5A linear regulator using an external PNP pass device provides a low noise, low dropout voltage source. A secondary winding feedback control pin (SFB) guarantees regulation regardless of the load on the main output by forcing continuous operation.

An additional comparator is available for use as a lowbattery detector. A power-on reset timer (POR) is included which generates a signal delayed by 65536/fCLK (300ms typically) after the output is within 5% of the regulated output voltage. Internal resistive dividers provide pin selectable output voltages with remote sense capability.

The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 30V (36V maximum).

Applications

  • Notebook and Palmtop Computers, PDAs
  • Cellular Telephones and Wireless Modems
  • Portable Instruments
  • Battery-Operated Devices
  • DC Power Distribution Systems
Part Models 10
1ku List Price Starting From $7.22

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1436ACGN#PBF
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LTC1436ACGN#TRPBF
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LTC1436ACGN-PLL#PBF
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LTC1436ACGN-PLL#TRPBF
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LTC1436AEGN#PBF
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LTC1436AEGN#TRPBF
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LTC1436AIGN#PBF
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LTC1436AIGN#TRPBF
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LTC1436AIGN-PLL#PBF
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LTC1436AIGN-PLL#TRPBF
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Product Lifecycle

PCN

Aug 10, 2022

- 22_0177

Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL

LTC1436ACGN#PBF

PRODUCTION

LTC1436ACGN#TRPBF

PRODUCTION

LTC1436ACGN-PLL#PBF

PRODUCTION

LTC1436ACGN-PLL#TRPBF

PRODUCTION

LTC1436AEGN#PBF

PRODUCTION

LTC1436AEGN#TRPBF

PRODUCTION

LTC1436AIGN#PBF

PRODUCTION

LTC1436AIGN#TRPBF

PRODUCTION

LTC1436AIGN-PLL#PBF

PRODUCTION

LTC1436AIGN-PLL#TRPBF

PRODUCTION

Filter by Model

reset

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Part Models

Product Lifecycle

PCN

Aug 10, 2022

- 22_0177

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Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL

LTC1436ACGN#PBF

PRODUCTION

LTC1436ACGN#TRPBF

PRODUCTION

LTC1436ACGN-PLL#PBF

PRODUCTION

LTC1436ACGN-PLL#TRPBF

PRODUCTION

LTC1436AEGN#PBF

PRODUCTION

LTC1436AEGN#TRPBF

PRODUCTION

LTC1436AIGN#PBF

PRODUCTION

LTC1436AIGN#TRPBF

PRODUCTION

LTC1436AIGN-PLL#PBF

PRODUCTION

LTC1436AIGN-PLL#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

DC163B

LTC1436CGN | Constant Frequency Switching Regulator 4.5V-20V INPUT 1.8V@4A, 2.5V@0.5A

DC140A-B

LTC1436CGN-PLL | Dual Output Regulator, 5.5V to 28V Input, 5V @ 3A and 12V @ 0.1A

DC140A-A

LTC1436CGN-PLL | Dual Output Regulator, 5.5V to 28V Input, 5V @ 3A and 3.3V @ 0.1A

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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