MIC2213_05 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – Sequenced Portable Power Management IC

MIC2213
MIC2213
Micrel, Inc.
Sequenced Portable Power Management IC
General Description
The MIC2213 is a dual µCap low dropout regulator with an
open-drain driver and power-on reset circuit. The first regula-
tor is capable of sourcing 150mA, while the second regulator
can source up to 300mA. A power-on reset function monitors
both outputs, indicating a fault on either output 1 or output 2.
The open-drain output is capable of sinking 150mA for LED
backlighting applications.
The MIC2213 adds the additional feature of sequencing
between the outputs, with the output of regulator 1 having to
settle before the output of regulator 2 can begin to turn-on.
Ideal for battery operated applications, the MIC2213 offers 1%
accuracy, extremely low dropout voltage (80mV @ 100mA),
and extremely low ground current, only 48µA total. Equipped
with a TTL logic compatible enable pin, the MIC2213 can be
put into a zero-off-mode current state, drawing no current
when disabled.
The MIC2213 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2213 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF™ leadless package and is also
available with adjustable output voltages in the 4mm × 4mm
16-pin MLF™ package.
Features
• 2 LDO outputs
• Output 1 - 150mA output current
• Output 2 - 300mA output current
• 1 Open-drain driver
• Power-on reset function with adjustable delay time
• Sequencing between outputs 1 and 2
• Input voltage range: 2.25V to 5.5V
• Stable with ceramic output capacitor
• 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 3mm × 3mm MLF™-10 package
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
Typical Application
V_IN
1µF
100kΩ
MIC2213-xxBML
VIN
VOUT1
OFF ON
EN
VOUT2
0.01µF
CBYP
OFF ON
SW
C_DELAY
SET
GND
POR
DRV
1µF
Ceramic
Keyboard Backlighting LED
V_ANALOG
V_DIGITAL
V_CORE
/RST
Baseband
Processor
MEMORY
MIC2213 Typical Cellphone 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
October 2005
1
M9999-101705