ISL9005A

LDO with Low I<sub>SUPPLY</sub>, High PSRR

Product Status: Mass Production(*)

OVERVIEW

ISL9005A is a high performance Low Dropout linear regulator capable of sourcing 300mA current. It has a low standby current and high-PSRR and is stable with output capacitance of 1µF to 10µF with ESR of up to 200mΩ.

The ISL9005A has a high PSRR of 75dB and an output noise of less than 45µVRMS . When coupled with a no load quiescent current of 50µA, (typical) and 0.1µA shutdown current, the ISL9005A is an ideal choice for portable wireless equipment.

Several different fixed voltage outputs are standard. Output voltage options for each LDO range are from 1.5V to 3.3V. Other output voltage options may be available upon request.

KEY FEATURES

  • 300mA high performance LDO
  • Excellent transient response to large current steps
  • Excellent load regulation: <0.1% voltage change across full range of load current
  • High PSRR: 75dB @ 1kHz
  • Wide input voltage capability: 2.3V to 6.5V
  • Very low quiescent current: 50µA
  • Low dropout voltage: typically 200mV @ 300mA
  • Low output noise: typically 45µVRMS @ 100µA (1.5V)
  • Stable with 1µF to 10µF ceramic capacitors
  • Soft-start to limit input current surge during enable
  • Current limit and overheat protection
  • ±1.8% accuracy over all operating conditions
  • Tiny 2mmx3mm 8 Ld DFN package
  • -40°C to +85°C operating temperature range
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL9005A
Basic Information
Production Status
Mass Production(*)
Input Voltage Min (V)
2.3
Input Voltage Max (V)
6.5
External Bias
No
Output Voltage Min (V)
1.5
Output Voltage Max (V)
3.3
Fixed Output Voltage Option
Yes
O/P Voltage Accuracy (%)
±1.8
Output Current 1 Max (A)
0.3
PSRR (dB)
75
Qualification Level
Standard
Noise (μVRMS 10Hz to 100kHz)
45
IQ
50 µA
Drop Out Voltage Typ (mV)
250 @ 300mA
Enable/Shutdown
Yes
PGOOD Output
No
Input Voltage Range (V)
2.3 to 6.5
Output Voltage Range (V)
1.5 to 3.3
Can Sample
YES
Temperature Range
-40 to +85

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