Datasheet Texas Instruments REG101NA-5/3K — 数据表

REG101
REG 101 SBVS026D – JULY 2001 – REVISED SEPTEMBER 2005 DMOS
100mA Low-Dropout Regulator
FEATURES DESCRIPTION в—Џ NEW DMOS TOPOLOGY:
Ultra Low Dropout Voltage:
60mV typ at 100mA
Output capacitor NOT required for stability
в—Џ FAST TRANSIENT RESPONSE
в—Џ VERY LOW NOISE: 23ВµVrms The REG101 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 60mV 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 1ВµF.
Typical ground pin current is only 500ВµA (at IOUT = 100mA)
and drops to 10nA when not in enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variation and under dropout conditions.
The REG101 has very low output noise (typically 23ВµVrms
for VOUT = 3.3V with CNR = 0.01ВµF), making it ideal for use
in portable communications equipment. Accuracy is maintained over temperature, line, and load variations. Key
parameters are tested over the specified temperature range
(–40В°C to +85В°C). …