Description

The LD59030 high accuracy voltage regulator provides 300 mA of maximum current

from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of

135 mV at VOUT = 3.3 V.

It is available in DFN4 1x1 package, allowing the maximum space saving.

The device works with a ceramic capacitor on the output. The ultra-low drop voltage,

low quiescent current and low noise features, together with the internal soft-start

circuit and output current fold-back protection, make the LD59030 suitable for low

power battery-operated applications.

An enable logic control function puts the LD59030 in shutdown mode allowing a total

current consumption lower than 0.03 µA.

Features

• Input voltage from 1.5 to 5.5 V

• Ultra low dropout voltage (135 mV typ. at 300 mA load)

• Very low quiescent current (28 µA typ. at no load, 0.03 µA typ. in off mode)

• Internal current fold-back

• Output voltage tolerance: ± 1 @ 25 °C

• 300 mA guaranteed output current

• High PSRR: 75 dB@1 kHz

• Wide range of output voltages available on request: from 0.8 V up to 5.0 V in 50

mV step

• Logic-controlled electronic shutdown

• Internal soft-start

• Optional output voltage discharge feature

• Compatible with ceramic capacitor COUT = 0.47 µF

• Thermal protection

• Available in DFN4 1x1

• Operating temperature range: -40 °C to 125 °C

LD59030属于集成电路（IC） > 线性 + 开关稳压器。意法半导体（ST）集团制造生产的LD59030稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。