REG103 - 500mA、低噪声、低压降稳压器

REG103是TI德州仪器公司的一款单通道LDO产品，REG103是500mA、低噪声、低压降稳压器，本站介绍了REG103的封装应用图解、特点和优点、功能等，并给出了与REG103相关的TI元器件型号供参考。

REG103 - 500mA、低噪声、低压降稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品描述

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 1µF.

Typical ground pin current is only 1mA (at IOUT = 500mA) and drops to 0.5µA 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 33µVrms for VOUT = 3.3V with CNR = 0.01µF), 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).

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.

产品特性

NEW DMOS TOPOLOGY: Ultra Low Dropout Voltage: 115mV Typ at 500mA and 3.3V Output Output Capacitor NOT Required for Stability
FAST TRANSIENT RESPONSE
VERY LOW NOISE: 33µVrms
HIGH ACCURACY: ±2% max
HIGH EFFICIENCY: IGND = 1mA at IOUT = 500mA Not Enabled: IGND = 0.5µA
2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE OUTPUT VERSIONS
FOLDBACK CURRENT LIMIT
THERMAL PROTECTION
OUTPUT VOLTAGE ERROR INDICATOR(1)
SMALL SURFACE-MOUNT PACKAGES: SOT223-5, DDPAK-5, SO-8
APPLICATIONS
- PORTABLE COMMUNICATION DEVICES
- BATTERY-POWERED EQUIPMENT
- PERSONAL DIGITAL ASSISTANTS
- MODEMS
- BAR-CODE SCANNERS
- BACKUP POWER SUPPLIES

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