MIC2212_06 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – Dual μCap LDO and Power-On Reset

MIC2212
MIC2212
Micrel, Inc.
Dual µCap LDO and Power-On Reset
General Description
The MIC2212 is a dual µCap low dropout regulator with
power-on reset circuit. The first regulator is capable of sourcing
150mA, while the second regulator can source up to 300mA
and includes a power-on reset function.
Ideal for battery operated applications, the MIC2212 offers 1%
accuracy, extremely low dropout voltage (80mV @ 100mA),
and extremely low ground current, only 48µA total. Equipped
with TTL-logic-compatible enable pins, the MIC2212 can be
put into a zero-off-mode current state, drawing no current
when disabled.
The MIC2212 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2212 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF™ leadless package.
Features
• Input voltage range: 2.25V to 5.5V
• Stable with ceramic output capacitor
• 2 LDO outputs
• Output 1 – 150mA output current
• Output 2 – 300mA output current
• Power-on reset function with adjustable delay time
• Low dropout voltage of 80mV @ 100mA
• Ultra-low quiescent current of 48µA
• High output accuracy:
• +1.0% initial accuracy
• +2.0% over temperature
• Thermal shutdown protection
• Current limit protection
• Tiny 10-pin 3mm × 3mm MLF™ package
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
Typical Application
Li-Ion
Batte ry
MIC2212-xxBML
VIN
VOUT1
EN1
VOUT2
EN2
POR
CBYP
SET
GND
V_I/O
V_CORE
/RST
Baseband
µProcessor
C_OUT = 1µF
Ceramic
Sets del ay for POR
MIC2212 Typical Cell Phone Application
MicroLeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
February 2006
1
M9999-022106