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EMC5046 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC5046
기능 Standalone Linear Li-Ion Charger
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EMC5046 데이터시트, 핀배열, 회로
ESMT/EMP
EMC5046
Standalone Linear Li-Ion Charger (1A, two-cell)
with Thermal Regulation
General Description
The EMC5046 is a complete linear charger for
two-cell lithium-ion batteries. With E-SOP-8 packages
and few external components, EMC5046 is well
suited for portable applications.
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 EMC5046 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 EMC5046
automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed
value after the final float voltage is reached.
The EMC5046 features 13.5V maximum rating
voltage for AC adapter, and it provides the charge
current up to 1.0A. Other features include battery
temperature monitoring, reverse current protection,
shutdown mode, charging current monitor, under
voltage lockout, automatic recharge and status
indicator.
Features
Programmable charge current up to 1.0A
No MOSFET, sense resistor or blocking diode
required
Complete linear charger in E-SOP-8 for
two-cell li-ion batteries
Thermal regulation maximizes charge rate
without risk of overheating
Preset 8.4V charge voltage with ±1%
accuracy
Automatic recharge
Charge status indicator
C/10 charge termination
5.8V trickle charge threshold
Battery reverse leakage current less than 1uA
Applications
Wireless handsets
Hand-held instruments
Portable information appliances
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jun. 2012
Revision: 0.2
1/19




EMC5046 pdf, 반도체, 판매, 대치품
ESMT/EMP
EMC5046
Pin Functions
Name
Pin
IN 1
CHG_SB
2
PGOODB
GND
3
4
ISETA
5
NC 6
ENB 7
BATT
GND
8
9
Function
Positive input supply voltage.
Provides power to the charger, VIN can range from 9V to 13.5V and should be bypassed
with at least a 1F capacitor. When IN pin drops to within 30mV above the BATT pin
voltage, the EMC5046 enters shutdown mode, dropping IBATT to less than 1A.
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 of approximately 25A, indicating an “VIN present” condition. When
the EMC5046 detects an under voltage lockout condition, CHG_SB is forced high
impedance.
Open-Drain battery power good output.
An internal N-channel MOSFET connects PGOODB pin to ground when VIN is reached to
8.4V. PGOODB is forced low during normal operation.
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
The ISETA pin can also be used to shutdown the charger. Disconnecting the program
resistor from ground allows a 1A 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.
Not connected.
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
8.4V. An internal precision resistor divider from this pin sets the float voltage which is
disconnected in shutdown mode.
Thermal ground area.
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jun. 2012
Revision: 0.2
4/19

4페이지










EMC5046 전자부품, 판매, 대치품
ESMT/EMP
EMC5046
Absolute Maximum Ratings (Notes 1, 2)
VIN, VBATT, VCHGSB, VPROODB, VEN
-0.3V to 15V
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 (JA , Note 3))
E-SOP-8L
9V to 13.5V
-40°C to 85°C
75°C/W
Thermal Resistance (JC , Note 4))
E-SOP-8L
15°C/W
Electrical Characteristics
TA = 25°C, VIN = 10V; unless otherwise specified.
Symbol
Parameter
Conditions
Input Operating Voltage
VIN
Range
Charge Mode, RSET = 30K (Note 6)
Min
9
Standby Mode (Charge
ICC Input Supply Current
Terminated)
Shutdown Mode (RSET Not
Connected, VIN < VBATT or VIN < VUV)
VFLOAT
Regulated Output (Float)
Voltage
RSET = 1.5K, Current Mode
8.356
RSET = 0.75K, Current Mode
IBATT BATT Pin Current
Standby Mode, VBATT = 8.4V
Shutdown Mode
-1
-1
Sleep Mode, VIN = 0V
-1
ITRICKLE Trickle Charge Current
VBATT < VTRICKLE, RSET = 1.5K
VBATT < VTRICKLE, RSET = 0.75K
VTRICKLE
VTRHYS
Trickle Charge Threshold
Voltage
Trickle Charge Hysteresis
Voltage
VMSD
Manual Shutdown Threshold
Voltage
RSET = 1.5K, VBATT Rising
RSET = 1.5K
ISETA Pin Rising
ISETA Pin Falling
VASD
VIN-VBATT Lockout Threshold
Voltage
VIN from High to Low
VIN from Low to High
C/10 Termination Current
ITERM
Threshold
RSET = 1.5K
RSET = 0.75K
VSET
ICHG_SB
ISETA Pin Voltage
CHG_SB Pin Weak Pull-Down
Current
RSET = 1.5K, Current Mode
VCHG_SB = 5.0V
Typ
10
300
250
190
8.44
500
1000
0
0
0
60
120
5.8
250
2.15
2.05
30
60
0.1
0.1
1.5
25
Max
13.5
Units
V
uA
uA
uA
8.524
1
1
1
V
mA
mA
uA
uA
uA
mA
mA
V
mV
V
V
mV
mV
mA/mA
mA/mA
V
uA
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jun. 2012
Revision: 0.2
7/19

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