Single Output LDO, 500mA, Fixed(5.0V), Low Noise, Fast Transient Response

The REG103 is a family of low-noise, low-dropout, linear Regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 115mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout Regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1F.
Typical ground pin current is only 1mA (at IOUT = 500mA) and drops to 0.5A in not enabled mode. Unlike Regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions. The REG103 has very low output noise (typically 33Vrms for VOUT = 3.3V with CNR = 0.01F), making it ideal for use in portable Communications equipment. On-chip trimming results in high output voltage accuracy. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (?40C to +85C).
The SO-8 version of the REG103 has an ERROR pin that provides a power good flag, indicating the Regulator is in regulation. The REG103 is well protected?internal circuitry provides a current limit that protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. In addition to the SO-8 package, the REG103 is also available in the DDPAK and the SOT223-5.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
REG103FA-2.5/500 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 5-DDPAK/TO-263 -40 to 85
REG103FA-3KTTTG3 Texas Instruments 3V FIXED POSITIVE LDO REGULATOR, 0.2V DROPOUT, PSSO5, GREEN, PLASTIC, TO-263, D2PAK, 5 PIN
REG103FA-3.3KTTT Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 5-DDPAK/TO-263 -40 to 85
REG103FA-5 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 5-DDPAK/TO-263 -40 to 85
REG103GA-5G4 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 6-SOT-223 -40 to 85
REG103GA-A/2K5 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 6-SOT-223 -40 to 85
REG103FA-2.5KTTTG3 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 5-DDPAK/TO-263 -40 to 85
REG103FA-2.7KTTT Texas Instruments 2.7V FIXED POSITIVE LDO REGULATOR, 0.2V DROPOUT, PSSO5, GREEN, PLASTIC, TO-263, D2PAK, 5 PIN
REG103UA-3 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 8-SOIC -40 to 85
REG103GA-3.3/2K5 Texas Instruments 500mA, Low-Noise, Low Dropout Regulator 6-SOT-223 -40 to 85
REG103-5 's PackagesREG103-5 's pdf datasheet
REG103FA-5 D2PAK
REG103FA-5-500 D2PAK
REG103FA-5-500G3 D2PAK
REG103FA-5KTTT D2PAK
REG103FA-5KTTTG3 D2PAK
REG103FA-A-500E3 D2PAK
REG103FA-A-500G3 D2PAK
REG103GA-5 SOT-223
REG103GA-5-2K5 SOT-223
REG103GA-5-2K5G4 SOT-223
REG103GA-5G4 SOT-223
REG103UA-5 SOIC
REG103UA-5-2K5 SOIC
REG103UA-5-2K5G4 SOIC
REG103UA-5G4 SOIC




REG103-5 Pinout, Pinouts
REG103-5 pinout,Pin out
This is one package pinout of REG103-5,If you need more pinouts please download REG103-5's pdf datasheet.

REG103-5 Application circuits
REG103-5 circuits
This is one application circuit of REG103-5,If you need more circuits,please download REG103-5's pdf datasheet.


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REG103-5 Application Notes REG103-5 RoHS REG103-5 Circuits REG103-5 footprint