Series: -
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Applications: Converter, TFT, LCD
Number of Outputs: 4
Package / Case: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Packaging: Tube
Manufacturer: Linear Technology
Supplier Device Package: 28-TSSOP Exposed Pad
Voltage - Input: 4.5 V ~ 22 V
Voltage - Output: 1.25 V ~ 40 V
Features: SpecificationsDescriptionThe LT1943EFE is designed as one kind of high current quad output regulator for TFT LCD panels,it provides power for large TFT LCD panels.The device, housed in a low profile 28 pin thermally enhanced TSSOP package, can generate a 3.3V or 5V logic supply along with the triple output supply required for the TFT LCD panel.Operating from an input range of 4.5V to 22V, a step-down regulator provides a low voltage output VLOGIC with up to 2A current. A high-power step-up converter, a lowerpower step-up converter and an inverting converter provide the three independent output voltages AVDD, VON and VOFF required by the LCD panel. A high-side PNP provides delayed turn-on of the VON signal and can handle up to 30mA. Protection circuitry ensures that VON is disabled if any of the four outputs are more than 10% below the programmed voltage.
Features of the LT1943EFE are:(1)fixed frequency,low noise outputs;(2)soft-start for all outputs;(3)externally programmable VON delay;(4)integrated schottky diode for VON output;(5)4.5V to 22V input voltage range;(6)available in thermally enhanced 28-Lead TSSOP;(7)4 integrated switches: 2.4A buck,2.6A boost,0.35A boost,0.35A inverter (guaranteed minimum current limit).It can be used in large TFT-LCD desktop monitors and flat panel televisions.
The absolute maximum ratings of the LT1943EFE can be summarized as:(1)VIN voltage:25V;(2)bOOST voltage:36V;(3)boost voltage above SW1:25V;(4)BIAS pin voltage:18V;(5)SW2,SW4 pin voltages:40V;(6)SW3 voltage:40V;(7)lead temperature (soldering,10 sec):300°C;(8)storage temperature range:65°C to 150°C;(9)operating temperature range:40°C to 85°C;(10)junction temperature:125°C;(11)E3 pin voltage:38V.If you want to know more information about this part,please download the datasheet in www.seekic.com and www.chinaicmart.com .
Parameters: | Technical/Catalog Information | LT1943EFE |
| Vendor | Linear Technology |
| Category | Integrated Circuits (ICs) |
| Package / Case | 28-TSSOP |
| Packaging | Tube |
| Type | TFT-LCD Voltage Regulator |
| Voltage - Input | 4.5 ~ 22 V |
| Voltage - Output | 1.25 ~ 40 V |
| Number of Outputs | 4 |
| Applications | Converter, TFT/LCD |
| Operating Temperature | -40°C ~ 85°C |
| Drawing Number | 161; 05-08-1663 var EB; FE; 28 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | LT1943EFE
LT1943EFE
|
LT1943EFE Data Sheet
