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Numéro de référence | EMC5755 | ||
Description | Standalone 1.2A Linear Li-Ion Battery Charger | ||
Fabricant | Elite Semiconductor | ||
Logo | |||
ESMT/EMP
EMC5755
Standalone 1.2A Linear Li-Ion Battery Charger
with Thermal Regulation in TDFN-6
General Description
The EMC5755 is a complete linear charger for single cell
lithium-ion batteries. With small TDFN-6 package and
few external components, EMC5755 is well suited for
portable applications. In addition, the EMC5755 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 EMC5755 always preconditions the battery with
1/10 of the programmed charge current at the
beginning of a charge cycle, until 40μs after it verifies
that the battery can be fast-charged. The EMC5755
automatically terminates the charge cycle when the
charge current drops to 1/10th the programmed value
after the final float voltage is reached.
The EMC5755 consumes zero reverse current from the
battery at standby, shutdown and sleep modes. This
feature reduces the charge and discharge cycles on
the battery, further prolonging the battery life. The
EMC5755 can also be used as a LDO when battery is
removed. Other features include shutdown mode,
charge 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-6 for single cell
Lithium-ion batteries
Typical zero reverse current from battery
Thermal regulation maximizes charge rate
without risk of overheating
Charges single cell Li-ion batteries directly from
USB port
Act as a LDO when battery is removed
Preset 4.2V charge voltage with ±1% accuracy
Automatic recharge
Charge status indicator
C/10 charge termination
45μA shutdown supply current
2.9V trickle charge threshold
Soft-start limits inrush current
RoHS compliant and Pb-free
Applications
Wireless handsets
Hand-held instruments
Portable information appliances
Bluetooth application
Charging docks and cradles
Typical Application Diagram
960 mA Charger
LDO Mode
(Battery Removed)
Typical Performance Characteristics
Complete Charge Cycle (850mAh Battery)
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Time (1000s/DIV)
Publication Date: Oct. 2010
Revision: 2.2
1/17
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Pages | Pages 17 | ||
Télécharger | [ EMC5755 ] |
No | Description détaillée | Fabricant |
EMC5754 | Standalone Linear Li-Ion Battery Charger | EMP |
EMC5755 | Standalone 1.2A Linear Li-Ion Battery Charger | Elite Semiconductor |
EMC5755-00FF06NRR | Standalone 1.2A Linear Li-Ion Battery Charger | Elite Semiconductor |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
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