|
|
PDF LP28009 Data sheet ( Hoja de datos )
| Número de pieza | LP28009 | |
| Descripción | Single and Dual Cell Li+ Battery Charger IC | |
| Fabricantes | Low Power Semi | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LP28009 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
Preliminary Datasheet
LP28009
Single and Dual Cell Li+ Battery Charger IC –LP28009
General Description
The LP28009 is a fully integrated low cost single-cell
and dual cell Li-Ion battery charger IC ideal for
portable applications. The LP28009 is capable of
being powered up from AC adapter. The LP28009
enters sleep mode when AC adapter is removed. The
LP28009 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 1.2A with
an external resister. The internal thermal feedback
circuitry regulates the die temperature to optimize the
charge rate for all ambient temperatures. The
LP28009 features 18V maximum rating voltages for
AC adapter. The other features are under voltage
protection, over voltage protection for AC adapter
supply and battery temperature monitoring.
Order Information
LP28009 □ □ □ □ □
F: Pb-Free
Package Type
SP: SOP-8(EP)
Output Voltage
42: 4.2V
84: 8.4V
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
PDA/DSC
Bluetooth Applications
Features
18V Maximum Rating for AC Adapter
Internal Integrate P-MOSFETs
AC Adapter Power Good Status Indicator
Charge Status Indicator
Under Voltage Protection
Over Voltage Protection
Automatic Recharge Feature
Battery Temperature Monitoring
Small 8-Lead SOP(EP) Package
Thermal Feedback Optimizing Charge Rate
ROHS Compliant and 100% Lead (Pb)-Free
Marking Information
Device Marking Package Shipping
LP28009
SP:SOP-8 3K/REEL
Typical Application Circuit
VIN
RED
10uF
1 ACIN
BATT 8
2
CHRG_S
7
NC
3 PGOOD
4
GND
5
ISETA
9 GND
EN 6
LP28009-42SPF
10uF
BATTERY
I/O CTRL
Q1
LPM9013
VIN
RED
10uF
1
ACIN
8
BATT
2 CHRG_S
NC 7
3
PGOOD
4 GND
ISETA 5
9 GND
EN 6
LP28009-84SPF
10uF
BATT
I/O CTRL
Q8
LPM9013
LP28009 – 02
May.-2013
Email: [email protected]
www.lowpowersemi.com
Page 1 of 12
1 page  
Preliminary Datasheet
LP28009
Absolute Maximum Ratings
VIN, VBATT, VCHGSB, VPGOOD, VEN --------------------------------------------------------------------- -0.3V to 15V
Storage Temperature Range------------------------------------------------------------------------------------ -65℃ to 150℃
VISETA --------------------------------------------------------------------------------------------------------------- -0.3V to 3.6V
Junction Temperature (TJ) ----------------------------------------------------------------------------- 150℃
Lead Temperature (soldering,10 sec.) -------------------------------------------------------------------------------------- 260℃
Operating Ratings
Supply Voltage --------------------------------------------------------------------------------------------------------------- 9V to 13.5V
Thermal Resistance(θJA) ------------------------------------------------------------------------------------------------------- 46℃/W
Operating Temperature Range -------------------------------------------------------------------------------------- -40℃ to 85℃
Electrical Characteristics
(TA=25℃, VIN=10V; unless otherwise specified.)
Symbol
Parameter
Conditions
Min Typ
Input Operating Voltage
VIN
Range
9 10
Charge Mode.RSET=30K
300
Standby Mode (Charge Terminated)
250
Icc
Input Supply Current
Shutdown Mode (RSET Not
Connected VIN < VBATT or VIN <
190
Vuv)
VFLOAT
Regulated Output(Float) 0℃ ≤ TA ≤ 85℃
Voltage
8.316 8.4
RSET=1.5k,Current Mode
500
RSET=0.75k,Current Mode
1000
IBATT
BATT Pin Current
Standby Mode, VBATT=8.4V
-1 0
Shutdown Mode
-1 0
Sleep Mode, VIN=0V
-1 0
ITRICKLE Trickle Charge Current
VBATT <VTRICKLE, RSET=1.5K
VBATT <VTRICKLE, RSET=0.75K
60
120
Trickle Charge Threshold RSET=1.5K, VBATT Rising
VTRICKLE
Voltage
5.8
VTRHYS
Trickle Charge Hysteresls RSET=1.5K
Voltage
250
VMSD
Manual
Shutdown ISETA Pin Rising
Threshold Voltage
ISETA Pin Falling
2.15
2.05
VASD
VIN – VBATT Lockout Vin from High to Low
30
Max
13.5
8.484
1
1
1
Units
V
uA
UA
uA
V
mA
mA
uA
uA
uA
mA
mA
V
mV
V
V
mV
LP28009 – 02
May.-2013
Email: [email protected]
www.lowpowersemi.com
Page 5 of 12
5 Page 
Preliminary Datasheet
LP28009
the BATT pin and GND is typically sufficient.
Temperature Regulation and Thermal Protection
In order to maximize the charge rate, the LP28009
features a junction temperature regulation loop. If the
power dissipation of the IC results in a junction
temperature greater than the thermal regulation
threshold (125°C), theLP28009 throttles back on the
charge current in order to maintain a junction
temperature around the thermal regulation threshold
(125°C). The LP28009 monitors the junction
temperature, TJ, of the die and disconnects the battery
from the input if TJ exceeds 125°C. This operation
continues until junction temperature falls below
thermal regulation threshold (125°C) by the hysteresis
level. This feature prevents the chip from damage.
Selecting the Input and Output Capacitors
In most applications, the most important is the
high-frequency decoupling capacitor on the input of
the LP28009.A 1uF ceramic capacitor, placed in close
proximity to input pin and GND pin is recommended. In
some applications depending on the power supply
characteristics and cable length, it may be necessary
to add an additional 10uFceramic capacitor to the
input.
The LP28009 requires a small output capacitor for
loop stability. A 1uF ceramic capacitor placed between
Layout Consideration
The LP28009 is a fully integrated low cost single-cell
Li-Ion battery charger ideal for portable applications.
Careful PCB layout is necessary. For best
performance, place all peripheral components as close
to the IC as possible. A short connection is highly
recommended. The following guide lines should be
strictly followed when designing a PCB layout for the
LP28009.Input capacitor should be placed close to IC
and connected to ground plane.
The trace of input in the PCB should be placed far
away the sensitive devices or shielded by the ground.
The GND should be connected to a strong ground
plane for heat sinking and noise protection. The
connection of RSETA should be isolated from other
noisy traces.
The short wire is recommended to prevent EMI and
noise coupling.
Output capacitor should be placed close to IC and
connected to ground plane to reduce noise coupling.
When PCB has poor layout, the 10uF is recommended
to prevent noise.
LP28009 – 02
May.-2013
Email: [email protected]
www.lowpowersemi.com
Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LP28009.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LP28006 | Single and Dual Cell Li+ Battery Charger IC | Low Power Semi |
| LP28009 | Single and Dual Cell Li+ Battery Charger IC | Low Power Semi |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |