ISL80505

High Performance 500mA LDO

Product Status: Mass Production

OVERVIEW

The ISL80505 is a single output Low Dropout voltage regulator (LDO) capable of sourcing up to 500mA output current. This LDO operates from input voltages of 1.8V to 6V. The output voltage of ISL80505 can be programmed from 0.8V to 5.5V.

A submicron BiCMOS process is utilized for this product family to deliver the best in class analog performance and overall value. This CMOS LDO consumes significantly lower quiescent current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller footprints.

State-of-the-art internal compensation achieves a very fast load transient response and excellent PSRR. The ISL80505 provides an output accuracy of ±1.8% VOUT accuracy over all load, line and temperature variations (TJ = -40°C to +125°C). An external capacitor on the soft-start pin provides an adjustable soft starting of the output voltage ramp to control the inrush current. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode.

KEY FEATURES

  • ±1.8% VOUT accuracy guaranteed over line, load, and TJ = -40°C to +125°C
  • Very low 45mV dropout voltage at VOUT = 2.5V
  • Stable with a 4.7µF output ceramic capacitor
  • Very fast transient response
  • Programmable output soft-start time
  • Excellent PSRR over wide frequency range
  • Current limit protection
  • Thermal shutdown function
  • Available in an 8 Ld DFN package
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL80505
Basic Information
生产状态
Mass Production
输入电压最小值 (V)
1.8
输入电压最大值 (V)
6
外部偏置
No
输出电压最小值 (V)
0.8
输出电压最大值 (V)
5.5
固定输出电压选项
No
O/P电压精度 (%)
±1.8%
输出电流1最大值 (A)
0.5
PSRR (dB)
60
资质级别
Standard
噪声 (μVRMS 100Hz至100kHz)
79
IQ
2.2 mA
压降典型值 (mV)
45 @ 500mA
启用/关闭
Yes
PGOOD输出
No
输入电压范围 (V)
1.8 to 6
输出电压范围 (V)
0.8 to 5.5
CAN 采样
YES
温度范围
-40 to +125

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