REG103GA-A | Texas Instruments
Voltage regulators, 5.5 V, 500 mA, positive, SOT-223, REG103GA-A
Low-dropout regulator, REG103GA-A, Texas Instruments
The REG103GA-A is a low-noise, low-dropout, linear regulator with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low dropout voltage (only 115 mV 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 1 µF. Typical ground pin current is only 1 mA (at IOUT = 500 mA) and drops to 0.5 µA in not enabled mode.
Unlike a regulator with a PNP pass device, quiescent current remains relatively constant over load variations and under dropout conditions. The REG103GA-A has very low output noise (typically 33 µVrms for VOUT = 3.3 V with CNR = 0.01 µF), 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 (–40 °C to +85 °C).
Features
- Foldback current limit
- Thermal protection
- Output voltage error indicator(1)
Applications
- Portable communication devices
- Battery-powered equipment
- Personal digital assistants
- Modems
- Bar-code scanners
- Backup power supplies
Filter | Property | Value |
---|---|---|
Assembly | SMD | |
Enclosure | SOT-223 | |
Version | adjustable | |
Number of Regulators | 1 | |
Input voltage AC | 15 V | |
Output voltage DC | 5.5 V | |
Output current | 500 mA | |
Polarity | positive | |
min. operating temperature | -40 °C | |
max. operating temperature | 85 °C |
Property | Value |
---|---|
Date of RoHS guidelines | 6/8/11 |
RoHS conform | Yes |
SVHC free | Yes |