ISL80101A

High Performance 1A Linear Regulator with Programmable Current Limiting

Product Status: Mass Production

OVERVIEW

The ISL80101A is a low dropout voltage, single output LDO with programmable current limiting. This LDO operates from input voltages of 2.2V to 6V, and is capable of providing output voltages of 0.8V to 5V. Other custom voltage options are available upon request.

A submicron BiCMOS process is utilized for this product family to deliver the best-in-class analog performance and overall value. The programmable current limiting improves system reliability of end applications. An external capacitor on the soft-start pin provides an adjustable soft-starting ramp. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode.

This CMOS LDO will consume significantly lower quiescent current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller footprints. Quiescent current is modestly compromised to achieve a very fast load transient response.

KEY FEATURES

  • ±2% VADJ accuracy guaranteed over line, load and TJ = -40°C to +125°C
  • Very low 212mV dropout voltage at VIN = 4.5V
  • High accuracy current limit programmable up to 1.75A
  • Very fast transient response
  • 100μVRMS output noise
  • Power-good output
  • Programmable soft-start
  • Over-temperature protection
  • Small 10 Ld DFN package

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL80101A
Basic Information
Production Status
Mass Production
Input Voltage Min (V)
2.2
Input Voltage Max (V)
6
External Bias
No
Output Voltage Min (V)
0.8
Output Voltage Max (V)
5
Fixed Output Voltage Option
Yes
O/P Voltage Accuracy (%)
±1.8
Output Current 1 Max (A)
1
PSRR (dB)
48
Qualification Level
Standard
Noise (μVRMS 10Hz to 100kHz)
53
Noise (μVRMS 100Hz to 100kHz)
53
Drop Out Voltage Typ (mV)
90 @ 1A
Enable/Shutdown
Yes
PGOOD Output
Yes
Input Voltage Range (V)
2.2 to 6.0
Output Voltage Range (V)
0.8 to 5.0
Can Sample
YES
Temperature Range
-40 to +125

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