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LT1943EFE The LT1943EFE from LT is a quad output switching regulator designed for TFT LCD panels. It operates from a 4.5V to 22V input and provides multiple output voltages.
Mfr Part #:

LT1943EFE

Available from 1 distributors
Mfr Name: LT
LT
The LT1943EFE from LT is a quad output switching regulator designed for TFT LCD panels. It operates from a 4.5V to 22V input and provides multiple output voltages.
✓ Total Stock: 22,000 pcs

LT1943EFE Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
22,000 pcs
On Request
22000 pcs On Request 1 On Request On Request 0452+ On Request On Request
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LT1943EFE Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
Mounting Type
Operating Temperature
Output Voltage
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LT1943EFE Description

Short technical summary and product information.

The LT1943EFE is a quad output adjustable switching regulator from Linear Technology, designed to power large TFT LCD panels. It operates from an input voltage range of 4.5V to 22V and can generate multiple output voltages required for LCD panels, including a logic supply up to 2A.

 

This device integrates four switches: a 2.4A buck, a 2.6A boost, a 0.35A boost, and a 0.35A inverter, all with guaranteed minimum current limits. It features fixed frequency, low noise outputs, and soft-start for all outputs. The regulator is synchronized to an internal 1.2MHz clock, enabling the use of low profile inductors and ceramic capacitors. The current mode architecture ensures excellent transient response, and all outputs are adjustable for flexibility.

 

The LT1943EFE is housed in a thermally enhanced 28-lead TSSOP package, suitable for surface mounting. It operates within an ambient temperature range of -40°C to 85°C. Additional features include externally programmable VON delay, an integrated Schottky diode for VON output, and a PGOOD pin for AVDD output disconnect. The PanelProtect circuitry disables VON upon fault conditions.

LT1943EFE Quick Information

Product Type: Quad Output Switching Regulator
Canonical Name: LT1943EFE Quad Output Switching Regulator
Subcategory: DC-DC Switching Regulator

LT1943EFE Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LT1943EFE Features

  • Four integrated switches for multiple outputs.
  • Wide 4.5V to 22V input voltage range.
  • Adjustable output voltages from 1.25V to 40V.
  • Fixed 1.2MHz switching frequency.
  • Thermally enhanced 28-lead TSSOP package.

LT1943EFE Applications

  • Powers large TFT LCD panels.
  • Suitable for flat panel televisions.
  • Used in desktop monitors.
  • Provides logic and triple output supplies.

LT1943EFE FAQs

6 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LT1943EFE?

The input voltage range is 4.5V to 22V.

What is the output voltage range of the LT1943EFE?

The output voltage is adjustable from 1.25V to 40V.

What is the package type of the LT1943EFE?

28-TSSOP Exposed Pad, surface mount.

What is the operating temperature range of the LT1943EFE?

-40°C to 85°C.

What is the switching frequency of the LT1943EFE?

1.2MHz.

What are the integrated switch current limits?

Buck: 2.4A, Boost: 2.6A, Boost/Inverter: 0.35A each.

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