General Description

The MIC5396, MIC5397, MIC5398, and MIC5399 are

advanced dual LDOs ideal for powering general

purpose portable devices. The MIC5396/7/8/9 provide

two high performance, independent 300 mA LDOs in a

single package. This makes it possible to improve

system efficiency by providing two independent supply

inputs that can be optimized for each individual LDO.

The MIC5396/7/8/9 also feature a wide output voltage

range down to 1.0V.

Its full feature set and low dropout voltage make it ideal

for battery-powered applications. The MIC5396/7/8/9

offer 2 accuracy, low dropout voltage (160 mV at

300 mA), and low ground current (typically 42 μA per

LDO at full load). The MIC5396/7/8/9 can also be put

into a zero off mode current state, drawing virtually no

current when disabled.

When the MIC5397 or MIC5399 are disabled, an

internal resistive load is automatically applied to the

output to discharge the output capacitor. In addition,

the MIC5398 and MIC5399 offer an internal enable

pull-down resistor to ensure that the output is disabled

when the enable is in tri-state mode. These LDOs also

offer fast transient response and high PSRR while

consuming a minimum operating current. The family is

available in a tiny 8-lead, 1.6 mm x 1.2 mm leadless

Extra Thin DFN package.

Features

• 2.5V to 5.5V Input Voltage Range

• Independent Power Inputs

• Output Voltage Range from 1V to 3.3V

• Two 300 mA Outputs

• High Output Accuracy (±2)

• Low Quiescent Current (37 μA typ. per LDO)

• Stable with 1 μF Ceramic Output Capacitors

• Low Dropout Voltage (160 mV at 300 mA)

• Independent Enable Pins

• Internal Enable Pull-Down (MIC5398, MIC5399)

• Output Discharge Circuit (MIC5397, MIC5399)

• Thermal Shutdown Protection

• Current Limit Protection

• 8-Lead 1.6 mm × 1.2 mm Extra Thin DFN Package

Applications

• Smartphones

• DSC, GPS, PMP and PDAs

• Medical Devices

• Portable Electronics

MIC5397-GPYMX-TR属于集成电路（IC） > 线性 + 开关稳压器。微芯科技股份有限公司制造生产的MIC5397-GPYMX-TR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。