|
|
PDF NCP1854 Data sheet ( Hoja de datos )
| Número de pieza | NCP1854 | |
| Descripción | 2.5A Fully Integrated Li-Ion Switching Battery Charger | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de NCP1854 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
NCP1854
2.5 A Fully Integrated Li-Ion
Switching Battery Charger
with Power Path
Management and USB
On-The-Go Support
The NCP1854 is a fully programmable single cell Lithium−ion
switching battery charger optimized for charging from a USB
compliant input supply and AC adaptor power source. The device
integrates a synchronous PWM controller, power MOSFETs, and the
entire charge cycle monitoring including safety features under
software supervision. An optional battery FET can be placed between
the system and the battery in order to isolate and supply the system.
The NCP1854 junction temperature is monitored during charge cycle
and both current and voltage can be modified accordingly through I2C
setting. The charger activity and status are reported through a
dedicated pin to the system. The input pin is protected against
overvoltages.
The NCP1854 also provides USB OTG support by boosting the
battery voltage as well as providing overvoltage protected power
supply for USB transceiver.
Features
• 2.5 A Buck Converter with Integrated Pass Devices
• Input Current Limiting to Comply to USB Standard
• Automatic Charge Current for AC Adaptor Charging
• High Accuracy Voltage and Current Regulation
• Input Overvoltage Protection up to +28 V
• Factory Mode
• 1000 mA Boosted Supply for USB OTG Peripherals
• Reverse Leakage Protection Prevents Battery Discharge
• Protected USB Transceiver Supply Switch
• Dynamic Power Path with Optional Battery FET
• Silicon Temperature Supervision for Optimized Charge Cycle
• Safety Timers
• Flag Output for Charge Status and Interrupts
• I2C Control Bus up to 3.4 MHz
• Small Footprint 2.2 x 2.55 mm CSP Package
• These Devices are Pb−Free and are RoHS Compliant
Typical Applications
• Smart Phone
• Handheld Devices
• Tablets
• PDAs
http://onsemi.com
MARKING
DIAGRAM
25 BUMP
FLIP−CHIP
CASE 499BN
1854
AYWW
G
1854 = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 24 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
January, 2014 − Rev. 2
1
Publication Order Number:
NCP1854/D
1 page  
NCP1854
Table 4. ELECTRICAL CHARACTERISTICS
Min & Max Limits apply for TA between −40°C to +85°C and TJ up to +125°C for VIN between 3.9 V to 7 V (Unless otherwise noted).
Typical values are referenced to TA = + 25°C and VIN = 5 V (Unless otherwise noted).
Symbol
Parameter
Conditions
Min Typ Max Unit
INPUT VOLTAGE
VINDET
Valid input detection threshold
VBUSUV
USB under voltage detection
VIN rising
VIN falling
VIN falling
Hysteresis
3.8 3.85 3.9
V
3.55 3.6 3.65 V
4.3 4.4 4.5 V
50 100 150 mV
VBUSOV
USB over voltage detection
VIN rising
Hysteresis
5.55 5.65 5.75 V
25 75 125 mV
VINOV
Valid input high threshold
VIN rising
Hysteresis
7.1 7.2 7.3 V
200 300 400 mV
INPUT CURRENT LIMITING
IINLIM
Input current limit
VIN = 5 V
Maximum Current range
Default value
100 2000 mA
70 85 100 mA
Accuracy
from 500 mA to 2000 mA
−15
0%
I2C Programmable granularity
(From 500 mA to 2000 mA)
100
mA
INPUT SUPPLY CURRENT
IQ_SW
VBUS supply current
IOFF
CHARGER DETECTION
No load, Charger active state
Charger not active
15 mA
700 mA
VCHGDET
Charger detection threshold
voltage
REVERSE BLOCKING CURRENT
VIN – VSENSN, VIN rising
VIN – VSENSN, VIN falling
50 110 180 mV
15 30 50 mV
ILEAK
VBAT leakage current
Battery leakage, VBAT = 4.2 V, VIN = 0 V,
SDA = SCL = 0 V
5 mA
RRBFET Input RBFET On resistance (Q1)
Charger active state, Measured between
IN and CAP, VIN = 5 V
BATTERY AND SYSTEM VOLTAGE REGULATION
VCHG
Output voltage range
Programmable by I2C
Default value
− 45 75 mW
3.3 4.5 V
3.6 V
Voltage regulation accuracy
I2C Programmable granularity
Constant voltage mode, TA = 25°C
−0.5
−1
25
0.5 %
1%
mV
BATTERY VOLTAGE THRESHOLD
VSAFE
VPRE
Safe charge threshold voltage
Conditioning charge threshold
voltage
VBAT rising
VBAT rising
2.1 2.15 2.2
V
2.75 2.8 2.85 V
VFET
End of weak charge threshold
voltage
VBAT rising
Voltage range
Default value
3.1 3.6 V
3.4
Accuracy
I2C Programmable granularity
−2
100
2%
mV
VRECHG
Recharge threshold voltage
Relative to VCHG setting register
97 %
http://onsemi.com
5
5 Page 
NCP1854
TYPICAL CHARACTERISTICS
Figure 6. VBUS Insertion
Figure 7. Charger Mode Efficiency
Figure 8. Automatic Charge Current
Figure 9. Dynamic Power Path
Figure 10. Boost Mode: Power−Up
Figure 11. Over Voltage Protection
http://onsemi.com
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet NCP1854.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| NCP1850 | Fully Integrated Li-Ion Switching Battery Charger | ON Semiconductor |
| NCP1851 | Fully Integrated Li-Ion Switching Battery Charger | ON Semiconductor |
| NCP1851A | Fully Integrated Li-Ion Switching Battery Charger | ON Semiconductor |
| NCP1852 | Fully Integrated Li-Ion Switching Battery Charger | ON Semiconductor |
| 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 |