Preliminary Datasheet
LP28007
Single and Dual Cell Li+ Battery Charger IC –LP28007
General Description
The LP28007 is a fully integrated low cost single-cell
Li-Ion battery charger IC ideal for portable
applications. The LP28007 is capable of being
powered up from AC adapter. The LP28007 enters
sleep mode when AC adapter is removed. The
LP28007 optimizes the charging task by using a
control algorithm including preconditioning mode, fast
charge mode and constant voltage mode. The
charging task is terminated as the charge current
drops below the preset threshold. The AC adapter
charge current can be programmed up to 1A with an
external resister. The internal thermal feedback
circuitry regulates the die temperature to optimize the
charge rate for all ambient temperatures. The
LP28007 features 18V maximum rating voltages for
AC adapter. The other features is under voltage
protection.
Features
18V Maximum Rating for AC Adapter
Internal Integrate P-MOSFETs
AC Adapter Power Good Status Indicator
Charge Status Indicator
Under Voltage Protection
Automatic Recharge Feature
Battery Temperature Monitoring
Small 8-Lead MSOP(EP) Package
Thermal Feedback Optimizing Charge Rate
ROHS Compliant and 100% Lead (Pb)-Free
Order Information
LP28007
□ □
□ □
□
F: Pb-Free
Package Type
MS: MSOP-8
Output Voltage
42: 4.2V
84: 8.4V
Typical Application Circuit
8.4V Li-Ion
Battery Pack
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
PDA/DSC
Bluetooth Applications
Marking Information
Device
LP28007
Marking
LPS
LP28007
XXXX
Package
SP:MSOP-8
Shipping
3K/REEL
LP28007 – 02
May.-2013
Email:
marketing@lowpowersemi.com
www.lowpowersemi.com
Page 1 of 11
Preliminary Datasheet
LP28007
Functional Pin Description
P ac k age T y pe
P in C onf ig ur at i ons
ACIN 1
8 BATT
9
PGND
7
6
NC
EN
EMSOP- 8
CHG_S 2
PGOOD 3
GND
4
5 ISETA
Pin Description
P in N o
1
2
3
4
5
6
7
8
P in N ame
AC I N
C H G_ S
PG O OD
GND
I SET A
EN
NC
BAT T
P in F unc t ion
Wall Adapt or C har ge I nput Supply .
C har ge St at us I ndic at or O ut put (O pen Dr ain) .
Pow er G ood I ndic at or O ut put ( O pen dr ain).
G r ound.
Wall Adapt or s upply c har ge c urr ent Set point .
C har ge Enable I nput ( ac t iv e low ) .
N o I nt er nal C onnec t ion.
Bat t er y C har ge C ur r ent O ut put .
T his
pin pr ov ides c har ge c urr ent t o t he bat t er y
and
r egulat es t he f inal f loat v olt age t o 4. 2 or 8. 4V. An int er nal
pr ec is ion r es is t or div ider fr om t his pin s et s t he f loat v olt age
w hic h is dis c onnec t ed in s hut dow n mode.
9( Ex pos ed Pad)
PG N D
Ex pos ed Pad Should be s older ed t o PC B Boar d and
C onnec t ed t o G N D .
Note: LP28007-42MSF and LP28007-84MSF of Battery (Pin8) is output pin, the pin connects to Battery.
LP28007 – 02
May.-2013
Email:
marketing@lowpowersemi.com
www.lowpowersemi.com
Page 2 of 11
京公网安备 11010802033920号
EEWORLD
