LT1943EFE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT1943EFE#PBF is a quad-output TFT LCD power supply controller from Analog Devices using current-mode PWM switching. It accepts 4.5 V to 22 V input and generates four regulated rails for display bias, gate drive, and backlight applications. Packaged in a 28-pin TSSOP, it streamlines power supply design for portable and industrial LCD panels.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LT1943EFE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.2600(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1943EFE#PBF?
- Four independent regulated outputs in a single 28-pin TSSOP for complete TFT LCD power supply
- Current-mode PWM control for fast transient response and cycle-by-cycle current limiting
- Wide input range from 4.5 V to 22 V supporting battery and adapter powered display systems
- Dedicated gate-on and gate-off drive outputs for TFT panel row driver sequencing
- Integrated soft-start and fault protection reducing external component count
What is LT1943EFE#PBF used for?
The LT1943EFE#PBF is designed to power TFT LCD panels in industrial HMI displays, portable medical monitors, and automotive infotainment screens where multiple supply rails must be precisely sequenced from a single input. Its four outputs provide the logic supply, positive and negative analog bias, and gate drive voltages required by standard active-matrix panel drivers. The current-mode control architecture ensures stable regulation even with the capacitive loads typical of large TFT glass substrates.
What are the specifications of LT1943EFE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1663 (EB) |
| YTEOL | 8.5 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 22V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Output Current-Max | 4.3A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1460kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the LT1943EFE#PBF datasheet?
LT1943EFE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1943EFE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many output rails does the LT1943EFE#PBF provide, and which TFT LCD supply voltages do they typically serve?
The LT1943EFE#PBF generates 4 regulated output rails configured to supply the typical voltages needed by a TFT LCD panel: a 3.3 V or 5 V logic supply, a positive analog bias around 15 V, a negative analog bias around -7 V, and a gate drive voltage that can reach 30 V or higher depending on the panel specification.
Can the LT1943EFE#PBF operate directly from a 12 V DC adapter input common in industrial panel PCs?
Yes, 12 V is the nominal input voltage for the LT1943EFE#PBF and falls well within its 4.5 V to 22 V operating range. Industrial panel PCs using standard 12 V brick adapters can connect directly without an intermediate regulation stage, and the device will generate all 4 display supply rails from that single 12 V input using its integrated PWM switching converters.
Why is current-mode PWM control important in a multi-output TFT LCD power supply like the LT1943EFE#PBF?
Current-mode PWM control provides cycle-by-cycle peak current limiting on each switching stage, protecting the inductor and switch transistors from overload during panel startup when capacitive loads draw high inrush current. It also improves load transient response compared to voltage-mode control, which is important for display systems where backlight dimming and panel enable sequencing cause rapid load steps across the 4 output rails.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $9.6200 | $182.78 |
| 100+ | $7.9479 | $794.79 |
| 250+ | $7.8875 | $1971.88 |
| 1000+ | $7.2600 | $7260.00 |
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