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LM1117DTX-ADJ/NOPB

800mA adjustable LDO, 1.25-13.8V, TO-252

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Pieza del fabricante：

LM1117DTX-ADJ/NOPB

Paquete：

TO-252 (DPAK)

Marca：
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Descripción

Productos

The LM1117DTX-ADJ/NOPB from TI is an 800mA adjustable LDO regulator with 1.25V to 13.8V output range in a TO-252 surface-mount package for board-level power regulation.

Especificaciones

Paquete TO-252 (DPAK)

Características

  • See datasheet for complete specifications
  • Industry-standard package

Aplicaciones

  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Automotive electronics

The LM1117DTX-ADJ/NOPB from TI is an 800mA adjustable LDO regulator with 1.25V to 13.8V output range in a TO-252 surface-mount package for board-level power regulation.

The LM1117DTX-ADJ/NOPB is an 800mA adjustable LDO regulator from Texas Instruments in TO-252 (DPAK), with 1.25V reference voltage. The output voltage is set by two external resistors: VOUT = 1.25V x (1 + R1/R2) + IADJ x R1, where IADJ is typically 50uA (negligible for R1 < 1k). For 3.3V: R1=1.6k, R2=1k; for 5V: R1=3k, R2=1k. The dropout voltage is 1.1V at 800mA, meaning VIN must be at least 4.4V for 3.3V output at full load. The quiescent current is 5mA typical (10mA max), flowing from input to ground. The device requires a minimum 10uF output capacitor for stability; unlike older LDOs that required tantalum, the LM1117 is stable with ceramic capacitors of sufficient value (22uF X5R recommended). The ADJ pin also serves as the feedback node; a 10uF capacitor from ADJ to GND improves ripple rejection. The thermal shutdown activates at 155C, and current limiting is at 1.2A. The TO-252 package provides 3C/W junction-to-tab, allowing 1.6W dissipation on a standard 1oz copper pour. The -DTX-ADJ suffix specifies TO-252, adjustable output. The LM1117 is one of the most widely used LDOs in the industry.

Pin Nombre Tipo Función
1 ADJ/GND Entrada Adjust pin (connect resistor divider from VOUT to set output: VOUT=1.25V x (1+R1/R2))
2 VOUT Salida Regulated output (800mA max, requires 10uF tantalum or ceramic for stability)
3 VIN Entrada Input supply (2.6-15V, must exceed VOUT + 1.1V)
  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Automotive electronics
    • Fabricante Número de pieza Paquete Notas
    Texas Instruments LM1117DTX-ADJ/NOPB TO-252 Same device, TI brand
    Texas Instruments LM1117DT-3.3/NOPB TO-252 3.3V fixed version
    onsemi NCP1117DTADJG TO-252 1A adjustable LDO, onsemi brand
    Diodos Inc AZ1117IH-ADJTRG1 SOT-223 1A adjustable LDO, Diodes Inc
    Infineon TLE4274G TO-252 5V 40mA automotive LDO, Infineon
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