ISL9008A Datasheet, PDF (1/11 Pages) Intersil Corporation – Low Noise LDO with Low IQ, High PSRR

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Data Sheet
March 11, 2008
ISL9008A
FN6300.4
Low Noise LDO with Low I_Q, High PSRR
ISL9008A 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 ISL9008A has a high PSRR of 65dB and output noise
less than 45μV_RMS. When coupled with a no load quiescent
current of 46μA (typical), and 0.5μA shutdown current, the
ISL9008A is an ideal choice for portable wireless equipment.
The ISL9008A comes in several fixed voltage options with
±1.8% output voltage accuracy over-temperature, line and
load. Other output voltage options may be available upon
request.
Pinouts
ISL9008A
(5 LD SC-70)
TOP VIEW
VIN
15
VO
GND
2
EN
34
NC
ISL9008A
(6 LD 1.6x1.6 µTDFN)
TOP VIEW
VO 1
6 VIN
GND 2
5 NC
NC 3
4 EN
Features
• 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
• High PSRR: 65dB @ 1kHz
• Wide input voltage capability: 2.3V to 6.5V
• Very low quiescent current: 46µA
• Low dropout voltage: typically 200mV @ 150mA
• Low output noise: typically 45µV_RMS @ 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)
Applications
• PDAs, cell phones and smart phones
• Portable instruments, MP3 players
• Handheld devices including medical handhelds
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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