DataSheet.es    


PDF SC801 Data sheet ( Hoja de datos )

Número de pieza SC801
Descripción Fully Integrated High Currnet Lithium-Ion Battery Charger System
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



Hay una vista previa y un enlace de descarga de SC801 (archivo pdf) en la parte inferior de esta página.


Total 17 Páginas

No Preview Available ! SC801 Hoja de datos, Descripción, Manual

www.DataSheet4U.com
5+&
Fully Integrated High Current
Lithium-Ion Battery Charger System
POWER MANAGEMENT
Description
Features
The SC801 is a fully integrated, single cell, constant-cur-
rent/constant-voltage Lithium-Ion\Li-Polymer battery
charger management system. The SC801 has built in in-
telligence and extreme functionality. When the battery
voltage is below 2.8V the charger operates in a pre-
charge mode with a charging current of up to 125mA
based on the ITERM pin resistor. This pre-charge mode is
set to limit power dissipation due to an undercharged
battery. When the battery voltage exceeds 2.8V, the
charger enters a fast charge mode. In this mode, the
SC801 delivers up to 1.5A to the battery based on the
IPRGM pin resistor.
The part also features current termination, ending the
charge cycle when the battery is charged and the charge
current drops below the current programmed by the
ITERM pin resistor. In addition, the charge current can
be monitored by the voltage on the IPRGM pin allowing a
microcontroller or ADC to access the current informa-
tion to determine when to externally terminate the charge
cycle. Once the charge cycle is complete and terminates,
the device enters the charge monitor mode where the
output voltage of the battery is monitored. If this voltage
drops below the recharge threshold the device will enter
the fast charge mode again, to bring the battery to its
fully charged state. Both the shutdown and monitor
modes drain no more than 1uA from the battery guaran-
teed.
The output voltage to the battery is controlled to within
1% of the programmed voltage for either 4.1V or 4.2V.
The SC801 can also function as a general purpose cur-
rent source or as a current source for charging nickel-
cadmium (NiCd) and nickel-metal-hydride (NiMH) batter-
ies using external termination.
Typical Application Circuit
K Fully integrated charger with FET pass transistor,
reverse-blocking diode, sense resistor and thermal
protection
K 4.1V, 4.2V & Adjustable Output Voltage
K Programmable precharge, fastcharge & termination
current
K Battery voltage controlled to 1% accuracy
K Soft-start for step load and adaptor plug-in
K Up to 1.5A continuous charge current
K Charge current monitor output from microcontroller
or ADC Interface
K Input voltages range from 4.2V to 14V
K 0.1µA Battery leakage in shutdown and monitor
modes
K Operates without a battery in regulated LDO mode
K Small 4mm x 4mm 16 lead MLP package
K Low thermal impedance of 50°C/watt
K Few external components
K Over current protection in all charging modes
K Over voltage protection
K All outputs able to drive LED’s and interface to host
processor
K Remote Kelvin sensing at the battery terminal
K Small input & output filter capacitors
K Status output communicates charging and end of
charge cycle
K Now Available in Lead-Free Packaging
K Charges Li-Ion, Li-Polymer, NiCd and NiMH Batteries
Applications
K Cellular phones
K PDA’s and Handheld computers
K Handheld meters
K Charging stations
K Digital cameras
CHARGER VIN
C1 R1 R2
1uF
14
13
VC C
CP
11
10
3 VCC
STAT 9
7
4
IPRGM OVP
EN VPRGM
2
1
8
6
5
ITER M
BIP
GND
NC
BSEN
VOUT
VOUT
NC
16
15
12
SC 801
BATTER Y
FAU LT
C2
2.2uF
STATU S
C H AR GER
PR ESEN T
Pre
-
Charge
Current
=

2.8
R2

88
Revision 3, April 2003
Fast
-
Charge
Current
=

1.5
R1

1000
Termination
Current
=

1.5
R2

88
1 www.semtech.com

1 page




SC801 pdf
POWER MANAGEMENT
Block Diagram
5+&
VCC
13,14
EN 7
OVP 9
GND 6
STAT 10
CP 11
BIP 8
BSEN 1
VPRGM 2
Control
EN
UV
OV
1.2V
Reference
and OT SD
+
-
EN
1.2V
4.2V
4.1V
Status
3.0V
Vout
Fast Charge
Enable
Charge
Pump
-
+
Vprog
Detect
4.2V
4.1V
3.0V
V_FB
-
+
1.2V
+
-
Termination
-
1.2V +
100 1
100 0.1
15,16 VOUT
4
ITERM
3
IPRGM
2002 Semtech Corp.
5
www.semtech.com

5 Page





SC801 arduino
POWER MANAGEMENT
LDO Mode Timing Diagram
LDO Mode
Vcc
5V
4.2V
6.5V
6.3V
BIP Low
Vout
Iout
1ms 1ms 4ms
4.2V
ILIMIT
1ms 1ms 4ms
Precharge
Limit
Soft Start
1ms
CP
OVP
Stat
High Z
EN
ILIMIT
5+&
2002 Semtech Corp.
11
www.semtech.com

11 Page







PáginasTotal 17 Páginas
PDF Descargar[ Datasheet SC801.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
SC80023W audio amplifier ICFUMAN ELECTRONICS
FUMAN ELECTRONICS
SC8002B3W audio amplifier ICFUMAN ELECTRONICS
FUMAN ELECTRONICS
SC801Fully Integrated High Currnet Lithium-Ion Battery Charger SystemSemtech Corporation
Semtech Corporation
SC802-04SCHOTTKY BARRIER DIODEFuji Electric
Fuji Electric

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
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,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar