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EMC5040 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC5040
기능 Standalone Linear Li-Ion Charger
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EMC5040 데이터시트, 핀배열, 회로
ESMT/EMP
EMC5040
Standalone Linear Li-Ion Charger with
Thermal Regulation
General Description
The EMC5040 is a complete linear charger for single
cell lithium-ion batteries. With small TDFN-10
package and few external components, EMC5040 is
well suited for portable applications. In addition, the
EMC5040 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 EMC5040 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 EMC5040
automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed
value after the final float voltage is reached.
The EMC5040 features 13.5V 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
Programmable charge current up to 1.2A
No MOSFET, sense resistor or blocking diode
required
Complete linear charger in TDFN-10 for single
cell li-ion batteries
Thermal regulation maximizes charge rate
without risk of overheating
Thermistor input for temperature qualified
charging
Charges single cell Li-ion batteries directly
from USB port.
Preset 4.2V charge voltage with ±1%
accuracy
Automatic recharge
Charge status indicator
C/10 charge termination
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: Jul. 2012
Revision: 1.2
1/19




EMC5040 pdf, 반도체, 판매, 대치품
ESMT/EMP
EMC5040
Pin Functions
Name
ACIN
NC
CHG_SB
PGOODB
GND
ISETA
NC
ENB
TS
BATT
TDFN-10
1
2
3
4
5
6
7
8
9
10
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 1F capacitor. When ACIN drops to within
30mV above the BATT pin voltage, the EMC5040 enters shutdown mode, dropping IBATT to
less than 1A.
Not connected.
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
“AC present” condition. When the EMC5040 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 ACIN is over 4.2V. 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.
TS pin is the input for an external NTC thermistor. When the TS pin voltage is out of the
window, determined by the VTMIN and VTMAX, the EMC5040 stops charging and indicates a
fault condition.
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 internal precision resistor
divider from this pin sets the float voltage which is disconnected in shutdown mode.
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jul. 2012
Revision: 1.2
4/19

4페이지










EMC5040 전자부품, 판매, 대치품
ESMT/EMP
EMC5040
Absolute Maximum Ratings (Notes 1, 2)
VACIN, VBATT, VCHGSB, VPROODB, VEN
-0.3V to 13.5V
VISETA, VTS
-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
4.5V to 6.5V
-40°C to 85°C
Thermal Resistance (JA , Note 3))
Thermal Resistance (JC , Note 4))
110°C/W
8.5°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
VSET
ICHG_SB
ISETA Pin Voltage
CHG_SB Pin Weak Pull-Down
RSET = 1.5K, Current Mode
VCHG_SB = 5.0V
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
1.5
25
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
V
uA
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Jul. 2012
Revision: 1.2
7/19

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