MIC2214 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – Portable Power Management IC

MIC2214
Micrel
MIC2214
Portable Power Management IC
General Description
The MIC2214 is a dual µCap, low dropout regulator with an
open-drain driver and power-on reset circuit. The first regu-
lator is capable of sourcing 150mA, while the second regula-
tor can source up to 300mA and includes a power-on reset
function. The open-drain output is capable of sinking 150mA
for LED backlighting applications.
Ideal for battery operated applications, the MIC2214 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 MIC2214
can be put into a zero-off-mode current state, drawing no
current when disabled.
The MIC2214 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2214 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
• 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
• 1 Open-drain driver
• 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 3mm × 3mm MLF™-10 package
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
Typical Application
V_IN
1µF
100kΩ
MIC2214-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
µProcessor
MEMORY
MIC2214 Typical Cellphone Application
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
August 2004
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MIC2214