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ISL9021AIRUFZ-T Datasheet(PDF) 1 Page - Intersil Corporation

Part # ISL9021AIRUFZ-T
Description  250mA Single LDO with Low IQ, Low Noise and High PSRR LDO
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL9021AIRUFZ-T Datasheet(HTML) 1 Page - Intersil Corporation

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1
250mA Single LDO with Low IQ, Low Noise and High
PSRR LDO
ISL9021A
The ISL9021A is a single LDO, which provides high
performance, low input voltage and high PSRR. It delivers
guaranteed continuous 250mA load current and is stable with
1µF to 4.7µF of output capacitance (±30%) with an ESR range
of 5m
Ω to 400mΩ.
The input voltage range for the ISL9021A is between 1.5V to
5.5V and the output voltage comes in many fixed voltage
options with ±1.8% accuracy over-temperature, line and load
ranges. The ISL9021A has typical PSRR of 75dB @ 10kHz and
50dB @ 1MHz.
The reverse current protection feature prevents current from
flowing back to the power source when the output voltage is
pulled higher than the input.
The ISL9021A is offered in tiny 4-bump 0.975mmx1.155mm
WLCSP and 1.6mmx1.6mm 6 Ld µTDFN packages.
Related Literature
•See FN6867, ISL9021 “250mA Single LDO with Low IQ, Low
Noise and High PSRR LDO”
Features
• High performance LDO with 250mA guaranteed continuous
output current
• Input voltage range: 1.5V to 5.5V
• Output voltage range: 1.2V to 3.3V
• High PSRR: 75dB @ 10kHz, 50dB @ 1MHz
• Low quiescent current: 35µA
• Dropout voltage: <150mV @ 250mA
• Stable with 1µF to 4.7µF output capacitance (±30%) with an
ESR range of 5m
Ω to 400mΩ
• ±1.8% output accuracy over-temperature/load/line
• Soft-start limits input current surge during enable
• Current limit and overheat protection
• -40°C to +85°C operating temperature range
• Available in 0.975mmx1.155mm 4-bump WLCSP package
and 1.6mmx1.6mm 6 Ld µTDFN
• Pb-free (RoHS compliant)
Applications
• PDAs, cell phones and smart phones
• Portable instruments, MP3 players
• Handheld devices including medical handheld
C1, C2: 1µF X5R CERAMIC CAPACITOR
ISL9021A
VIN
GND
VO
VIN (1.5V TO 5.5V)
VOUT
C1
C2
EN
ENABLE
OFF
ON
FIGURE 1. TYPICAL APPLICATION
December 20, 2012
FN7845.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas Inc. 2011, 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.


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