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ISL9003A
Low Noise LDO with Low IQ, High PSRR

热度 61

ISL9003A is a high performance single low noise, high PSRR LDO that delivers a continuous 150mA of load current. It has a low standby current and is stable with 1μF of MLCC output capacitance with an ESR of up to 200mΩ.

The ISL9003A has a very high PSRR of 90dB and output noise is 20μVRMS (typical). When coupled with a no load quiescent current of 31μA (typical), and 0.5μA shutdown current, the ISL9003A is an ideal choice for portable wireless equipment.

The ISL9003A comes in many fixed voltage options with ±1.8% output voltage accuracy over temperature, line and load. Other output voltage options are available on request.

  • High Performance LDO with 150mA Continuous Output
  • Excellent Transient Response to Large Current Steps
  • Excellent Load Regulation: <0.1% voltage change across full range of load current
  • Very High PSRR: >90dB at 1kHz
  • Wide Input Voltage Capability: 2.3V to 6.5V
  • Extremely Low Quiescent Current: 31μA
  • Low Dropout Voltage: Typically 200mV at 150mA
  • Low Output Noise: Typically 20μVRMS at 100μA (1.5V)
  • Stable with 1μF to 4.7μF Ceramic Capacitors
  • Shutdown Pin Turns Off LDO with 1μA (max) Standby Current
  • Soft-start Limits Input Current Surge During Enable
  • Current Limit and Overheat Protection
  • ±1.8% Accuracy Over all Operating Conditions
  • 5 Ld SC-70 Package or 6 Ld μTDFN Package
  • -40°C to +85°C Operating Temperature Range
  • Pb-Free (RoHS compliant)
    • PDAs, Cell Phones and Smart Phones
    • Portable Instruments, MP3 Players
    • Handheld Devices Including Medical Handhelds
 
Alternatives
Parameters ISL9003A ISL9001A ISL9008A ISL9011A
VIN (min) (V)2.3 2.3 2.3 2.3
VIN (max) (V)6.5 6.5 6.5 6.5
NeedsExternalBiasNo No No No
VOUT (min) (V)1.5 1.5 1.5 1.5
VOUT (max) (V)3.3 3.3 3.3 3.3
Fixed Output Voltage OptionYes Yes Yes Yes
O/P Voltage Accuracy (%)±1.8 ±1.8 ±1.8 ±1.8
IOUT1 (max) (A)0.15 0.3 0.15 0.15
IOUT2 (max) (A)N/A N/A N/A 0.3
PSRR90 dB 90 dB 65 dB 70 dB
Qualification LevelStandard Standard Standard Standard
Noise (μVRMS 10Hz to 100kHz)20 30 45 30
IQ29 μA 25 μA 45 μA 45 μA
Typical Drop-Out Voltage (mV)200 @150mA 250 @ 300mA 200 @150mA 250 @ 300mA
Enable/ShutdownYes Yes Yes Yes
# of PORsN/A N/A
PGOOD OutputNo No No No

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