MIC2210_06 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – Dual μCap LDO with Open-Drain Driver

MIC2210
Dual µCap LDO with Open-Drain Driver
General Description
The MIC2210 is a dual µCap, low dropout regulator with
an open-drain driver and 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. The open-drain output is capable of
sinking 150mA for LED backlighting applications.
Ideal for battery operated applications, the MIC2210 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 MIC2210 can be put into a zero-off-mode current state,
drawing no current when disabled.
The MIC2210 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2210 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF^® leadless package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
*For each output.
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
• 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
C_BYP
MIC2210-xx_ML
VIN
VOUT1
EN1
VOUT2
EN2
ERR
CBYP
DRV
SW
GND
LED x10
Keyboard
Backlight
Audio Amp
Baseband IC
MIC2210 Typical Cell Phone Application
MLF and MicroLeadFram are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
November 2006
1
M9999-112006