MIC2215
Micrel
MIC2215
Triple High PSRR, Low Noise
碌
Cap 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 110碌A(chǔ)
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 1碌A(chǔ) when
all the regulators are disabled. The MIC2215 is a
碌Cap
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
脳
4mm
MLF鈩?package.
All support documentation can be found on Micrel鈥檚 web site
at www.micrel.com.
Features
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Input voltage range: +2.25V to +5.5V
70dB PSRR
Stable with ceramic output capacitor
High output accuracy:
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鹵1.0%
initial accuracy
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鹵2.0%
over temperature
Low dropout voltage of 100mV@150mA
Low quiescent current: 110碌A(chǔ) per regulator
Fast turn-on time: 30碌s
Zero off-mode current
Thermal shutdown protection
Current-limit protection
Tiny 16-pin (4mm
脳
4mm) MLF鈩?package
Cellular phones
PCs and peripherals
Wireless LAN cards
PDAs
GPS
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Applications
Typical Application
MIC2215-xxxBML
VIN1
VIN2
VIN3
OFF ON
OFF ON
OFF ON
VOUT1
VOUT2
VOUT3
Rx Chain
Tx Chain
Synth/TCXO/VCO
EN1
EN2
EN3
GND
CBYP
C
IN
= 1碌F
Ceramic
C
OUT
= 1碌F
Ceramic
Micro
LeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 474-1000 鈥?http://www.micrel.com
April 2004
1
M9999-042704
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