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부품번호 | NCP1852 기능 |
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기능 | Fully Integrated Li-Ion Switching Battery Charger | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 30 페이지수
NCP1852, NCP1852A
Fully Integrated Li-Ion
Switching Battery Charger
with Power Path
Management and USB
On-The-Go Support
The NCP1852 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 NCP1852 junction temperature and battery temperature are
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 NCP1852 also provides USB OTG support by boosting the
battery voltage as well as providing overvoltage protected power
supply for USB transceiver.
Features
• 1.8 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 / −20 V
• Factory Mode
• 500 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
• Battery Temperature Sensing for Safe Operation (JEITA)
• 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
Applications
• Smart Phone
• Handheld Devices
• Tablets
• PDAs
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MARKING
DIAGRAM
25 BUMP
FLIP−CHIP
CASE 499BN
XXXX
AYWW
G
XXXX = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G or G = Pb−Free Package
*Pb−Free indicator, “G” or microdot “ G”,
may or may not be present.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 30 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
March, 2013 − Rev. 5
1
Publication Order Number:
NCP1852/D
NCP1852, NCP1852A
Table 2. MAXIMUM RATINGS
Rating
Symbol
Value
Unit
IN (Note 1)
CAP (Note 1)
Power balls: SW (Note 1)
CBOOT (Note 1)
Sense/Control balls: SENSP, SENSN, VBAT, FET, TRANS, CORE, NTC,
FLAG and WEAK. (Note 1)
VIN
VCAP
VSW
VCBOOT
VCTRL
−20 to +28
−0.3 to +28
−0.3 to +24
−0.3 to VSW +7.0
−0.3 to +7.0
V
V
V
V
V
Digital Input: SCL, SDA, SPM, OTG, ILIM1 and ILIM2 (Note 1)
Input Voltage
Input Current
VDG
−0.3 to +7.0 V
V
IDG 20 mA
Storage Temperature Range
TSTG
−65 to +150
°C
Maximum Junction Temperature (Note 4)
TJ
−40 to +TSD
°C
Moisture Sensitivity (Note 5)
MSL
Level 1
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Conditions
Min
Typ
Max Unit
VIN Operational Power Supply
3
VINOV
V
VDG Digital input voltage level
0 5.5 V
TA Ambient Temperature Range
−40 25 +85 °C
ISINK
FLAG sink current
10 mA
CIN Decoupling input capacitor
1 mF
CCAP
Decoupling Switcher capacitor
4.7 mF
CCORE
Decoupling core supply capacitor
2.2 mF
COUT
Decoupling system capacitor
10 mF
LX Switcher Inductor
2.2 mH
RSNS
Current sense resistor
68 mW
RqJA
Thermal Resistance Junction to Air
(Notes 4 and 6)
60
°C/W
TJ Junction Temperature Range
−40
25
+125
°C
1. According to JEDEC standard JESD22−A108.
2. This device series contains ESD protection and passes the following tests:
Human Body Model (HBM) ±2.0 kV per JEDEC standard: JESD22−A114 for all pins.
Machine Model (MM) ±200 V per JEDEC standard: JESD22−A115 for all pins.
3. Latch up Current Maximum Rating: ±100 mA or per ±10 mA JEDEC standard: JESD78 class II.
4. A thermal shutdown protection avoids irreversible damage on the device due to power dissipation. See Electrical Characteristics.
5. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020.
6. The RqJA is dependent on the PCB heat dissipation. Board used to drive this data was a 2s2p JEDEC PCB standard.
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4페이지 NCP1852, NCP1852A
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 3.6 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
JUNCTION THERMAL MANAGEMENT
TH1 Hot temp threshold 1
TWARN
Thermal warning
BATTERY THERMAL MANAGEMENT
Relative to TSD
Relative to TSD
−11 °C
−15 °C
VNTCRMV
Battery removed threshold
voltage
VNTC Rising
2.3 2.325 2.35
V
VCOLD
Battery cold temperature
corresponding voltage
threshold
Voltage range
1.425
1.95 V
Default
1.7 1.725 1.75
V
VHOT
Battery hot temperature
corresponding voltage
threshold
Voltage range
375 900 mV
Default
500 525 550 mV
VCOLD garnadnVulHaOriTtyvoltage
75 mV
VWARM
Battery warm temperature
corresponding voltage
threshold
BATWARM = 0
BATWARM = 1
VHOT+
0.15
VHOT+
0.225
V
V
VCHILLY
Battery chilly temperature
corresponding voltage
threshold
BATCHILLY = 0
BATCHILLY = 1
VCOLD−
0.15
VCOLD−
0.225
V
V
VNTCDIS
NTC disable corresponding
voltage threshold
VNTC Falling
50 75 100 mV
VREG
Internal voltage reference
RNTCPU
Internal resistor pull up
BUCK CONVERTER
2.35 2.4 2.45 V
9.8 10 10.2 kW
FSWCHG
Switching Frequency
Switching Frequency Accuracy
− 3 − MHz
−10 +10 %
TDTYC
Max Duty Cycle
IPKMAX
Maximum peak inductor current
RONLS
Low side Buck MOSFET
RDSON (Q3)
RONHS
High side Buck MOSFET
RDSON(Q2)
PROTECTED TRANSCEIVER SUPPLY
Average
Measured between PGND and SW, VIN = 5 V
Measured between CAP and SW, VIN = 5 V
99.5 %
2A
− 80 200 mW
− 130 250 mW
VTRANS
ITRMAX
ITROCP
TIMING
Voltage on TRANS pin
TRANS current capability
Short circuit protection
VIN ≥ 5 V
5 5.5 V
50 mA
150 mA
TWD
TUSB
Watchdog timer
USB timer
32
2048
s
s
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부품번호 | 상세설명 및 기능 | 제조사 |
NCP1850 | Fully Integrated Li-Ion Switching Battery Charger | ON Semiconductor |
NCP1851 | Fully Integrated Li-Ion Switching Battery Charger | ON Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |