MIC79110
Micrel
MIC79110
Simple 1.2A Linear Li-Ion Battery Charger
General Description
The Micrel MIC79110 is a simple and accurate lithium ion
battery charger. Featuring a built-in pass transistor, precision
programmable current limiting (鹵5%), and precision voltage
termination (鹵1.5% over temperature) all in a very small
package, the MIC79110 packs full functionality into a small
space.
Other features of the MIC79110 include two independent
end-of-charge indications, including a digital indication that is
programmable with a resistor-to-ground and an analog cur-
rent output that is proportional to the output current, allowing
for monitoring of the actual charging current. Additional
features include very low dropout (500mV over the tempera-
ture range), thermal shutdown, and reverse polarity protec-
tion. In the event the input voltage to the charger is discon-
nected, the MIC79110 also provides minimal reverse-current
and reversed-battery protection.
Available in both fixed 4.2V and adjustable outputs, the
MIC79110 is offered in the leadless 3mm x 3mm MLF-10 with
an operating junction temperature range of 鈥?0藲C to +125藲C.
Features
鈥?Input voltage range: 2.5V to 16V
鈥?High output voltage accuracy of
鹵0.75%
over 鈥?擄C to
+60藲C and
鹵1.5%
over temperature
鈥?Current Limit
鹵5%
accurate from 鈥?擄C
鈮?/div>
Tj
鈮?/div>
+ 125擄C
鈥?Programmable End-of-Charge Flag
鈥?Analog output proportional to output current
鈥?Adjustable and Fixed 4.2V Output
鈥?Low dropout voltage of 500mV at 700mA load, over
temperature
鈥?1.2A output current
鈥?Excellent line and load regulation specifications
鈥?Reverse current and reverse battery protection
鈥?Thermal shutdown and current limit protection
鈥?Tiny 3mm
脳
3mm MLF鈩?10 package
鈥?Junction Temperature Range: 鈥?0擄C to +125擄C
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Cellular phones
PDAs
Digital cameras
Camcorders
MP3 players
Notebook PCs
Portable Meters
Cradle chargers
Car chargers
Battery packs
Typical Application
10k鈩?/div>
MIC79110
V
IN
SHUTDOWN
ENABLE
VIN
SD
REOC
RSET
BAT
SNS
DEOC
ACHG
GND
1k鈩?/div>
4.2V
BAT
4.2V
Li-Ion
Cell
4k鈩?/div>
167鈩?/div>
MLF and
Micro
LeadFrame is a trademark of Amkor Technology.
Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 474-1000 鈥?http://www.micrel.com
July 2004
1
M9999-072004
MIC79110 PDF文件相關(guān)型號(hào)
MIC79110BML
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