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EMC5045 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC5045
기능 Standalone Linear Li-Ion Charger
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EMC5045 데이터시트, 핀배열, 회로
ESMT/EMP
Preliminary
EMC5045
Standalone Linear Li-Ion Charger with
Thermal Regulation
General Description
The EMC5045 is a complete linear charger for single
cell lithium-ion batteries. With E-SOP-8 packages and
few external components, EMC5045 is well suited for
portable applications. In addition, the EMC5045 is
specifically designed to work within USB power
specifications.
No external sense resistor and blocking diode are
required. Charging current can be programmed
externally with a single resistor. The built-in thermal
regulation facilitates charging with maximum power
without risk of overheating.
The EMC5045 always preconditions the battery with
1/10 of the programmed charge current at the
beginning of a charge cycle, after it verifies that the
battery can be fast-charged. The EMC5045
automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed
value after the final float voltage is reached.
The EMC5045 features 6.5V maximum rating voltage
for AC adapter, and it provides the charge current
up to 1.2A. Other features include battery
temperature monitoring, reverse current protection,
shutdown mode, charging current monitor, under
voltage lockout, automatic recharge and status
indicator.
Features
g Programmable charge current up to 1.2A
g No MOSFET, sense resistor or blocking diode
required
g Complete linear charger in E-SOP-8 for single
cell li-ion batteries
g Thermal regulation maximizes charge rate
without risk of overheating
g Thermistor input for temperature qualified
charging
g Charges single cell Li-ion batteries directly
from USB port.
g Preset 4.2V charge voltage with ±1%
accuracy
g Automatic recharge
g Charge status indicator
g C/10 charge termination
g Battery reverse leakage current less than 1uA
g Over voltage protection up to 13.5V
Applications
g Wireless handsets
g Hand-held instruments
g Portable information appliances
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jun. 2012
Revision: 0.2
1/19




EMC5045 pdf, 반도체, 판매, 대치품
ESMT/EMP
Preliminary
EMC5045
Pin Functions
Name
ACIN
CHG_SB
PGOODB
GND
ISETA
NC
ENB
BATT
GND
E-SOP-8
Function
Positive Input Supply Voltage. Provides power to the charger. ACIN can range
from 4.5V to 6.5V and should be bypassed with at least a 1μF capacitor. When
1
ACIN drops to within 30mV above the BATT pin voltage, the EMC5045 enters
shutdown mode, dropping IBATT to less than 1μA.
Open-Drain Charge Status Output. An internal N-channel MOSFET connects
CHG_SB pin to ground when the battery is charging. After the charge cycle is
completed, the internal N-channel MOSFET is replaced by a weak pull-down
2
of approximately 25μA, indicating an “AC present” condition. When the
EMC5045 detects an under voltage lockout condition, CHG_SB is forced high
impedance.
Open-Drain Battery Power Good Output. An internal N-channel MOSFET
3 connects PGOODB pin to ground when ACIN is over 4.2V. PGOODB is forced
low during normal operation.
4 Ground.
Charge Current Program, Charge Current Monitor and Shutdown Pin. The
charge current is programmed by connecting a 1% resistor, RSET, to ground.
When charging in constant-current mode, this pin servos to 1.5V. In all modes,
the voltage on this pin can be used to measure the charge current using the
following formula:
IBATT = (VSET / RSET) * 500
5
The ISETA pin can also be used to shutdown the charger. Disconnecting the
program resistor from ground allows a 1μA current to pull the ISETA pin high.
When it reaches the 2.15V shutdown threshold voltage, the charger enters
shutdown mode. This pin is also clamped to approximately 2.5V.
Reconnecting RSET to ground will return the charger to normal operation.
The ISETA pin must not be directly shorted to ground at any condition.
6 Not connected.
7 Charge Enable Input (active low). This pin is weakly pulled low internally.
Charge Current Output and battery voltage feedback. This pin provides
charge current to the battery and regulates the final float voltage to 4.2V. An
8
internal precision resistor divider from this pin sets the float voltage which is
disconnected in shutdown mode.
9 Thermal ground area.
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jun. 2012
Revision: 0.2
4/19

4페이지










EMC5045 전자부품, 판매, 대치품
ESMT/EMP
Preliminary
EMC5045
Absolute Maximum Ratings (Notes 1, 2)
VACIN, VBATT, VCHGSB, VPROODB, VEN
-0.3V to 13.5V
VISETA,
-0.3V to 3.6V
Power Dissipation
(Note 5)
Storage Temperature Range
-65°C to 150°C
Junction Temperature (TJ)
150°C
Lead Temperature (Soldering, 10 sec.)
260°C
Operating Ratings (Note 1, 2)
Supply Voltage
Operating Temperature Range
Thermal Resistance (θJA , Note 3))
E-SOP-8L
4.5V to 6.5V
-40°C to 85°C
75°C/W
Thermal Resistance (θJC , Note 4))
E-SOP-8L
15°C/W
Electrical Characteristics
TA = 25°C, VACIN = 5.0V; unless otherwise specified.
Symbol
Parameter
Conditions
VACIN
Input Operating Voltage
Range
VIN Over-voltage Lockout
VOV
Threshold
From VACIN Low to High
Charge Mode, RSET = 30K (Note 6)
Standby Mode (Charge
ICC Input Supply Current
Terminated)
Shutdown Mode (RSET Not
Connected, VACIN < VBATT, VACIN <
VUV or VACIN > VOV)
VFLOAT
Regulated Output (Float)
Voltage
0°C TA 85°C
RSET = 1.5K, Current Mode
RSET = 0.75K, Current Mode
IBATT BATT Pin Current
Standby Mode, VBATT = 4.2V
Shutdown Mode
Sleep Mode, VACIN = 0V
ITRICKLE Trickle Charge Current
VBATT < VTRICKLE, RSET = 1.5K
VBATT < VTRICKLE, RSET = 0.75K
VTRICKLE
VTRHYS
VMSD
Trickle Charge Threshold
Voltage
Trickle Charge Hysteresis
Voltage
Manual Shutdown Threshold
Voltage
RSET = 1.5K, VBATT Rising
RSET = 1.5K
ISETA Pin Rising
ISETA Pin Falling
VASD
VIN-VBATT Lockout Threshold
Voltage
VACIN from Low to High
VACIN from High to Low
C/10 Termination Current
ITERM
Threshold
RSET = 1.5K
RSET = 0.75K
Min
4.5
4.158
-1
-1
-1
Typ
5
7
300
200
150
4.2
500
1000
0
0
0
50
100
2.9
100
2.15
2.05
60
30
0.1
0.1
Max
6.5
Units
V
V
uA
uA
uA
4.242
1
1
1
V
mA
mA
uA
uA
uA
mA
mA
V
mV
V
V
mV
mV
mA/mA
mA/mA
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jun. 2012
Revision: 0.2
7/19

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