MIC2215 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – Tirple High PSRR, Low Noise uCap LDO

MIC2215
Micrel
MIC2215
Triple High PSRR, Low Noise µCap LDO
General Description
The MIC2215 is a high performance, triple LDO voltage
regulator, with each regulator capable of providing 250mA
continuous output current.
Ideal for battery operated applications, the MIC2215 offers
1% initial accuracy, extremely low dropout voltage (100mV@
150mA), and low ground current at light load (typically 110µA
per regulator). Equipped with a noise bypass pin and featur-
ing very high power supply ripple rejection (PSRR) of up to
80dB, the MIC2215 provides the lowest noise and highest
efficiency solution for RF applications in portable electronics
such as cellular phones and wireless LAN applications.
Equipped with TTL logic-compatible enable pins, each of the
regulators in the MIC2215 can be put into a zero current off
mode where the supply current is much less than 1µA when
all the regulators are disabled. The MIC2215 is a µCap
design, which enables a stable output with small ceramic
output capacitors, reducing both cost and required board
space for output bypassing.
The MIC2215 is available in the miniature 16-pin, 4mm × 4mm
MLF™ package.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Features
• Input voltage range: +2.25V to +5.5V
• 70dB PSRR
• Stable with ceramic output capacitor
• High output accuracy:
– ±1.0% initial accuracy
– ±2.0% over temperature
• Low dropout voltage of 100mV@150mA
• Low quiescent current: 110µA per regulator
• Fast turn-on time: 30µs
• Zero off-mode current
• Thermal shutdown protection
• Current-limit protection
• Tiny 16-pin (4mm × 4mm) MLF™ package
Applications
• Cellular phones
• PCs and peripherals
• Wireless LAN cards
• PDAs
• GPS
Typical Application
OFF ON
OFF ON
OFF ON
C_IN = 1µF
Ceramic
MIC2215-xxxBML
VIN1
VOUT1
VIN2
VOUT2
VIN3
VOUT3
EN1
EN2
EN3
CBYP
GND
Rx Chain
Tx Chain
Synth/TCXO/VCO
C_OUT = 1µF
Ceramic
MicroLeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
April 2004
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M9999-042704