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SC803 PDF даташит

Спецификация SC803 изготовлена ​​​​«Semtech Corporation» и имеет функцию, называемую «Fully Integrated High Current Lithium-Ion Battery Charger System».

Детали детали

Номер произв SC803
Описание Fully Integrated High Current Lithium-Ion Battery Charger System
Производители Semtech Corporation
логотип Semtech Corporation логотип 

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SC803 Даташит, Описание, Даташиты
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SC803
Fully Integrated High Current
Lithium-Ion Battery Charger System
POWER MANAGEMENT
Description
Features
The SC803 is a fully integrated, single cell, constant-cur- ‹ Fully integrated charger with FET pass transistor,
rent constant-voltage Lithium-Ion battery charger man-
reverse-blocking diode, sense resistor and thermal
agement system. The SC803 has built in intelligence and
protection
extreme functionality. When the battery voltage is below ‹ Complete voltage ranges of 4.1V, 4.2V &
2.8V the charger operates in a pre-charge mode with a
adjustable
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 SC803 delivers up to
1.5A to the battery based on the IPRGM pin resistor.
‹ Programmable precharge, fastcharge & termination
current
‹ Battery voltage controlled to 1% accuracy
‹ Soft-start for step load and adaptor plug-in
‹ Up to 1.5A continuous charge current
‹ Charge current monitor output from microcontroller
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-
or ADC Interface
‹ Input voltages range from 4.2V to 7V
‹ 0.1µA Battery drain current in shutdown and
monitor modes
‹ Operates without a battery in regulated LDO mode
‹ Small 4mm x 4mm 16 lead MLP package
tion to determine when to externally terminate the charge ‹ Low thermal impedance of 50°C/watt
cycle. Once the charge cycle is complete and terminates, ‹ Few external components
the device enters the charge monitor mode where the ‹ Over current protection in all charging modes
DataShee
output voltage of the battery is monitored. If this DvoalttaaSgheeet4‹U.cOovmer voltage protection with fault pin output
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.
‹ All outputs able to drive LED’s and interface to host
processor
‹ Remote Kelvin sensing at the battery terminal
‹ Small input & output filter capacitors
‹ Status output communicates charging and end of
The output voltage to the battery is controlled to within
charge cycle
1% of the programmed voltage for either 4.1V or 4.2V. Applications
The SC803 can also function as a general purpose cur- ‹ Cellular phones
rent source or as a current source for charging nickel-
cadmium (NiCd) and nickel-metal-hydride (NiMH) batter-
ies using external termination.
‹ PDA’s
‹ Handheld meters
‹ Charging stations
‹ Handheld computers
Typical Application Circuit
‹ Digital cameras
‹ Programmable current source
CHARGER VIN
C1 R1 R2
1uF
14
13
3
7
4
8
6
5
VCC
CP
VCC
STAT
IPRGM OVP
EN VPRGM
ITERM BSEN
BIP VOUT
GND
VOUT
NC NC
11
10
9
2
1
16
15
12
SC803
BATTERY
DataSheet4U.com
PreCharge
Current
=

2.8
R2

88
Revision 4, November 2004
Fast
Charge
Current
=

1.5
R1

1000
1
DataSheet4 U .com
FAULT
STATUS
CHARGER
PRESENT
C2
2.2uF
Termination
Current
=

1.5
R2

88
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SC803 Даташит, Описание, Даташиты
www.DataSheet4U.com
SC803
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
VCC, EN to GND
-0.3 to 7.0
V
VOUT, VPRGM, IPRGM, CP, OVP, STAT, ITERM, BIP to GND
-0.3 to +6.0
V
Power Dissipation
MLP (Derate 20mW/ °C above 85 °C)
PD 2.5 W
VOUT short to GND
Continuous
Thermal Resistance, Junction to Ambient
Operating Junction Temperature
IR Reflow Temperature
(Soldering) 10 seconds
TR option
TRT option (lead-free leadframe)
Storage Temperature
ESD Rating (Human Body Model)
* Tied to PCB with 1 Square Inch, 2 Ounce Copper
Electrical Characteristics
et4U.comUnless otherwise noted: VCC = 4.75V - 5.25V
θJA
TJ
TIRRT
TIRRT
TSTG
ESD
48
150
240
260
-65 to 150
2
°C/W *
°C
°C
°C
°C
kV
DataShee
Parameter
Symbol
DCatoanSdhietieotn4sU.com
25°C
TA Units
(-40°C to +85°C)
Min Typ Max Min Max
Input Voltage
VCC
4.2 7
V
Operating Voltage
Operating Current
VOP
ICC Charging Mode
OVP, STATUS, CP = 0µA
LDO Mode
OVP, STATUS, CP = 0µA
4.2 6.5
2
V
mA
25
Battery Leakage Current
Regulated Voltage
Adjust Mode Feedback
Voltage
Battery Pre-Charge Current
Battery Termination Current
IVOUT
VBAT
PCI
ITERM
VCC = 0V
VPRGM = Logic High
VPRGM = Logic Low
VPRGM = External Divider
VCC = 4.2V - 6.5V
ITERM Resistor = 3.01k
VBATTERY > 2.5V
0.1 1 µA
4.20 4.16 4.24 V
4.10 4.06 4.14
3.0 2.97 3.03 V
82 72 92
mA
45 38 52
Battery Fast-Charge Current
FCI
IPRGM = 3.01k
500 450 550 mA
IPRGM = 1.87k
800 750 850
DataSheet4U.com
VBATTERY = 3.8V
Dropout Voltage = 550mV
2004 Semtech Corp.
DataSheet4 U .com
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SC803 Даташит, Описание, Даташиты
www.DataSheet4U.com
SC803
POWER MANAGEMENT
Electrical Characteristics Cont.
Unless otherwise noted: VCC = 4.75V - 5.25V
Parameter
Symbol
Battery Fast-Charge
Current Limit
IPROG Regulated Voltage
VIN UVLO Rising Threshold
Adjust Mode Threshold
Voltage
VBAT Precharge Threshold
VBAT Recharge Threshold
VIN OVP Rising Threshold
VIN OVP Falling Threshold
VIN OVP Hysteresis
et4U.comOver Temperature Shutdown
Status Output Source Current
OVP Output Source Current
CP Output Source Current
BSENSE Input Leakage
Current
STAT, OVP, CP Outputs
STAT Output
EN, BIP, VPRGM Inputs
EN Input Sink Current
** Thermally Limited
VOH
VOL
VOH
VIH
VIL
Conditions
2.8V < VBATTERY < VBAT
Dropout voltage = 1V
VBAT - VBATTERY
Hysteresis = 10°C
Pre-CDhaatragSehoereFt4aUst.-cCohmarge
VSTAT = 2.8V
End of Charge, VSTAT= 0.25V
No Adaptor or LDO mode,
High Impedance
VCC > OVP
VCC > UVLO
Load = 10mA
Load = 1mA
Load = -500µA
Load = 0mA
EN Voltage = 1.8V
25°C
Min Typ Max
(-40T°CA to
+85°C)
Units
Min Max
1.5** A
1.5
1.4 1.6
V
4.2 4.3 V
90 mV
2.8
2.7 2.9
V
200 170 230 mV
6.8
6.525 7.0
V
6.5
6.2 6.8
V
300 200 400 mV
165 °C DataShee
10 mA
1 mA
1 µA
10 mA
10 mA
0.1 1 µA
2.4
V
2.6
0.25 V
2.8 3.0 V
1.8 V
0.4 V
4 10 uA
DataSheet4U.com
2004 Semtech Corp.
DataSheet4 U .com
3
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