ISL80103

High Performance 3A Linear Regulator

Product Status: Mass Production

OVERVIEW

The ISL80102 and ISL80103 are low voltage, high-current, single output LDOs specified for 2A and 3A output current, respectively. These LDOs operate from the input voltages of 2.2V to 6V and are capable of providing the output voltages of 0.8V to 5.5V on the adjustable VOUT versions. Other custom voltage options are available upon request.

An external capacitor on the soft-start pin provides adjustment for applications that demand inrush current less than the current limit. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode. A submicron BiCMOS process is used for this product family to deliver best-in-class analog performance and overall value.

These CMOS (LDOs) consume significantly lower quiescent current as a function of load over bipolar LDOs, so they are more efficient and allow packages with smaller footprints. The quiescent current has been modestly compromised to enable a leading class fast load transient response, and hence a lower total AC regulation band for an LDO in this category.

KEY FEATURES

  • Stable with ceramic capacitors
  • 2A and 3A output current ratings
  • 2.2V to 6V input voltage range
  • ±1.8% VOUT accuracy guaranteed over line, load, and TJ = -40°C to +125°C
  • Very low 120mV dropout voltage at 3A (ISL80103)
  • Very fast transient response
  • Excellent 62dB PSRR
  • 49μVRMS output noise
  • Power-good output
  • Adjustable inrush current limiting
  • Short-circuit and over-temperature protection
  • Available in a 10 Ld DFN

PARAMETRICS

Parameters
ISL80103
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)
3
PSRR (dB)
62
Qualification Level
Standard
Noise (μVRMS 100Hz to 100kHz)
49
Drop Out Voltage Typ (mV)
120 (@3A,Vout=2.5V)
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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