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
Production Status
Mass Production
Input Voltage Min (V)
1.8
Input Voltage Max (V)
6
External Bias
No
Output Voltage Min (V)
0.8
Output Voltage Max (V)
5.5
Fixed Output Voltage Option
No
O/P Voltage Accuracy (%)
±1.8%
Output Current 1 Max (A)
0.5
PSRR (dB)
60
Qualification Level
Standard
Noise (μVRMS 100Hz to 100kHz)
79
IQ
2.2 mA
Drop Out Voltage Typ (mV)
45 @ 500mA
Enable/Shutdown
Yes
PGOOD Output
No
Input Voltage Range (V)
1.8 to 6
Output Voltage Range (V)
0.8 to 5.5
Can Sample
YES
Temperature Range
-40 to +125

Action Needed