ISL9014A

Dual LDO with Low Noise, Low IQ, and High PSRR

Product Status: Mass Production(*)

OVERVIEW

ISL9014A is a high performance dual LDO capable of sourcing 300mA current from both outputs. The device has a low standby current and high-PSRR and is stable with output capacitance of 1µF to 10µF with ESR of up to 200mΩ. A reference bypass pin allows an external capacitor for adjusting a noise filter for low noise and high PSRR applications.

The quiescent current is typically only 45µA with both LDOs enabled and active. Separate enable pins control each individual LDO output. When both enable pins are low, the device is in shutdown, typically drawing less than 0.1µA. Several combinations of voltage outputs are standard.

Output voltage options for each LDO range from 1.5V to 3.3V. Other output voltage options are available on request.

KEY FEATURES

  • Integrates two high performance LDOs
  • VO1 - 300mA output
  • VO2 - 300mA output
  • Excellent transient response to large current steps
  • Excellent load regulation: <1% voltage change across full range of load current
  • High PSRR: 70dB @ 1kHz
  • Wide input voltage capability: 2.3V to 6.5V
  • Extremely low quiescent current: 45µA (both LDOs active)
  • Low dropout voltage: typically 200mV @ 300mA
  • Low output noise: typically 30µVRMS @ 100µA (1.5V)
  • Stable with 1µF to 10µF ceramic capacitors
  • Separate enable pins for each LDO
  • Soft-start to limit input current surge during enable
  • Current limit and overheat protection
  • ±1.8% accuracy over all operating conditions
  • Tiny 10 Ld 3mmx3mm DFN package
  • -40°C to +85°C operating temperature range
  • Pin compatible with Micrel MIC2211
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL9014A
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
Output Current 2 Max (A)
0.3
PSRR (dB)
70
Qualification Level
Standard
Noise (μVRMS 10Hz to 100kHz)
30
IQ
45 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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