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 48
µ
A
• 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
100kΩ
MIC2214-xxBML
V
IN
1µF
OFF
ON
VIN
EN
CBYP
VOUT1
VOUT2
POR
DRV
1µF
Ceramic
Keyboard Backlighting LED
GND
V
ANALOG
V
DIGITAL
V
CORE
/RST
Baseband
µProcessor
MEMORY
0.01µF
OFF
ON
SW
SET
C
DELAY
MIC2214 Typical Cellphone Application
Micro
LeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2004
1
MIC2214
MICREL [ MICREL SEMICONDUCTOR ]
