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NCP1852 데이터시트 PDF




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부품번호 NCP1852 기능
기능 Fully Integrated Li-Ion Switching Battery Charger
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NCP1852 데이터시트, 핀배열, 회로
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 Lithiumion
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 PbFree and are RoHS Compliant
Applications
Smart Phone
Handheld Devices
Tablets
PDAs
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MARKING
DIAGRAM
25 BUMP
FLIPCHIP
CASE 499BN
XXXX
AYWW
G
XXXX = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G or G = PbFree Package
*PbFree 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 pdf, 반도체, 판매, 대치품
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 JESD22A108.
2. This device series contains ESD protection and passes the following tests:
Human Body Model (HBM) ±2.0 kV per JEDEC standard: JESD22A114 for all pins.
Machine Model (MM) ±200 V per JEDEC standard: JESD22A115 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: JSTD020.
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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NCP1852 전자부품, 판매, 대치품
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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