MIC5370/1
High-Performance Dual 150mA LDO
1.6mm x 1.6mm Thin MLF
®
General Description
The MIC5370/1 is an advanced dual LDO ideal for
powering general purpose portable devices. The
MIC5370/1 provides two independently-controlled, high-
performance 150mA LDOs in a tiny 1.6mm x 1.6mm Thin
MLF
®
package.
Ideal for battery-powered applications, the MIC5370/1
offers 2% initial accuracy, low dropout voltage (155mV @
150mA) and low ground current (typically 32μA per LDO).
The MIC5370/1 can also be put into a zero-off-mode
current state, drawing virtually no current when disabled.
When the MIC5371 is disabled an internal resistive load is
automatically applied to the output to discharge the output
capacitor. This LDO offers fast transient response and
high PSRR while consuming a minimum operating current.
The MIC5370/1 is available in fixed output voltages in a
lead-free (RoHS-compliant) 6-pin 1.6mm x 1.6mm Thin
MLF
®
package.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
•
2.5V to 5.5V input voltage range
•
Two 150mA output current LDOs
•
High output accuracy
– ±2% initial accuracy
•
Low quiescent current – 32µA per LDO
•
Stable with 1µF ceramic output capacitors
•
Independent enable pins
•
Low dropout voltage – 155mV at 150mA
•
Thermal-shutdown protection
•
Current-limit protection
•
Output discharge circuit – MIC5371
•
6-pin 1.6mm x 1.6mm Thin MLF
®
package
Applications
•
•
•
•
Camera phones
Mobile phones
GPS, PMP, PDAs and handhelds
Portable electronics
___________________________________________________________________________________________________________
Typical Application
MIC5370/1-xxYMT
VIN
EN1
VBAT
1µF
EN2
GND
VOUT1
VOUT2
1µF
1µF
I/O
VCORE
Camera DSP Power Supply Circuit
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
May 2011
M9999-052011-C
嵌入式系统
京公网安备 11010802033920号
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