|
|
PDF EUP8051 Data sheet ( Hoja de datos )
| Número de pieza | EUP8051 | |
| Descripción | Low Cost 1A Linear Battery Charge Controllers | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EUP8051 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
EUP8051
Low Cost 1A Linear Battery Charge
Controllers
DESCRIPTION
The EUP8051 is a single Lithium-Ion (Li-Ion) and
Lithium–Polymer (Li-Pol) linear charge management
controller for use in cost sensitive and portable
applications. It combines high accuracy constant-current
and constant-voltage regulation, cell preconditioning,
temperature monitoring, automatic charge termination,
charge-status indication, in a space-saving MSOP-8
package.
www.DTahtaeShEeUetP4U80.c5o1m applies a constant current up to 1A to the
battery and the charge current can be programmed
externally with a sense-resistor.
The EUP8051 automatically terminates the charge cycle
when the charge current drops to the charge termination
threshold (ITERM) after the charge-regulation voltage is
reached.
When the input supply is removed, the EUP8051
automatically enters a low-power sleep mode, dropping
the battery drain current to less than 1µA.
A battery charge state output pin is provided to indicate
battery charge status through a display LED. The battery
charge status output is a serial interface which may also be
read by a system microcontroller.
FEATURES
z Programmable Charge Current up to 1A
z 4.5V-7V Input Voltage Range
z Ideal for Single Cell (4.1V or 4.2V) Li-Ion or
Li-Pol Batteries
z Preset Charge Voltage with ±1% Accuracy
z Constant-Current/Constant Voltage Operation
z Preconditioning of Low Voltage Cells
z Optional Cell-Temperature Monitoring Before and
During Charge
z Charge Status Indication
z Automatic Battery Recharge
z Charge Termination by Minimum Current
z Automatic Low-Power Sleep Mode When Input
Power is Removed
z Available in MSOP-8,TSSOP-8 and SOP-8
Package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Cellular Phones / PDAs/ MP3 Players/DSC
z Handheld Instruments
DS8051 Ver 1.6 Sep. 2006
1
1 page  
EUP8051
Absolute Maximum Ratings
Supply voltage, (Vcc with respect to GND) ------------------------------------------------------ -0.3 to +7V
Input voltage, SNS, BAT, TS, PI (all with respect to GND)-------------------------- -0.3V to VCC +0.3V
Sink current (STAT pin) not to exceed PD -------------------------------------------------------------- 20mA
Source current (STAT pin) not to exceed PD ---------------------------------------------------------- 10mA
Output current (CC pin) not to exceed PD -------------------------------------------------------------- 40mA
Maximum Junction Temperature, TJ ------------------------------------------------------------------- 150°C
Storage temperature range, Tstg ------------------------------------------------------------- -65°C to 150°C
Lead temperature (soldering, 10s) ------------------------------------------------------------------ 300°C
Package Thermal Resistance, θJA- MSOP8 ---------------------------------------------------------- 80°C/W
Recommended Operating Conditions
www.DataSheet4U.com
Supply voltage, VCC
Operating free-air temperature range, TA
Min.
4.5
-20
Max.
7
70
Unit
V
°C
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
Symbol
I(VCC)
Parameter
VCC current
Conditions
VCC=5V >VCC(min), Excluding
external loads
EUP8051
Min. Typ. Max.
Unit
0.6 1 mA
I(VCCS)
VCC Sleep current
V(BAT) ≥ V(min),
V(BAT)-VCC ≥ 0.8V
2 6 µA
IIB(BAT) Input bias current on BAT pin
IIB(SNS) Input bias current on SNS pin
IIB(TS) Input bias current on TS pin
IIB(PI) Input bias current on PI pin
Battery Voltage Regulation
VO(REG)
Output voltage
V(BAT)=V(REG)
V(SNS)=5V
V(TS)=5V
V(PI)=5V
EUP8051-4.1
EUP8051-4.2
1 µA
1 µA
1 µA
1 µA
4.059 4.10
4.158 4.20
4.141
4.242
V
DS8051 Ver 1.6 Sep. 2006
5
5 Page 
EUP8051
Qualification and Precharge
When power is applied, the EUP8051 starts a
charge-cycle if a battery is already present or when a
battery is inserted. Charge qualification is based on
battery temperature and voltage.
The EUP8051 suspends charge if the battery temperature
is outside the V(TS1) to V(TS2) range and suspends charge
until the battery temperature is within the allowed range.
The EUP8051 also checks the battery voltage. If the
battery voltage is below the precharge threshold V(min),
the EUP8051 uses precharge to condition the battery. The
conditioning charge rate I(PRECHG) is set at approximately
10% of the regulation current. The conditioning current
also minimizes heat dissipation in the external
pass-element during the initial stage of charge. See
Figure5 for a typical charge-profile.
www.DataSheet4U.com
Voltage Regulation Phase
The voltage regulation feedback is through the BAT pin.
This input is tied directly to the positive side of the
battery pack. The EUP8051 monitors the battery-pack
voltage between the BAT and VSS pins. The EUP8051 is
offered in two fixed-voltage versions:4.1V, 4.2V.
FB/CE Pin Function
This pin has two functions, one is to enable/disable the
charge function, and the other is to finely adjust battery
regulation voltage. Connect this pin to VDD to enable
EUP8051, and connect to ground to disable it (Figure7).
If this pin is connected to a voltage divider as shown in
Figure8, it can be a 2.15V reference voltage to adjust the
output regulation voltage as desired.
Current Regulation Phase
The EUP8051 regulates current while the battery-pack
voltage is less than the regulation voltage, VO(REG). The
EUP8051 monitors charge current at the SNS input by
the voltage drop across a sense-resistor, RSNS, in series
with the battery pack. In current sensing configuration
(Figure6), RSNS is between the VCC and SNS pins,
charge-current feedback, applied through pin SNS,
maintains a voltage of V(SNS) across the current sense
resistor. The following formula calculates the value of the
sense resistor:
R SNS
=
V(SNS)
I O(REG)
---------------------------- (1)
Where IO(REG) is the desired charging current.
Example: For 0.55A, RSNS: 0.22V/0.55A: 0.4Ω
For 1.0A, RSNS: 0.22V/1.0A: 0.22Ω
DS8051 Ver 1.6 Sep. 2006
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet EUP8051.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EUP8051 | Low Cost 1A Linear Battery Charge Controllers | Eutech Microelectronics |
| EUP8051A | Low Cost 1A Linear Battery Charge Controllers | Eutech Microelectronics |
| EUP8051A-42MIR1 | Low Cost 1A Linear Battery Charge Controllers | Eutech Microelectronics |
| EUP8054 | Standalone Linear Li-Ion Battery Charger | Eutech Microelectronics |
| 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 |