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PDF EMC5050-42HC16NRR Data sheet ( Hoja de datos )
| Número de pieza | EMC5050-42HC16NRR | |
| Descripción | 1.5A Li-ion/Li Polymer Battery Charger | |
| Fabricantes | Elite Semiconductor | |
| Logotipo |  |
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ESMT/EMP
EMC5050
1.5A Li-ion/Li Polymer Battery Charger
General Description
The EMC5050 is a highly-integrated battery charger
for single-cell Li-ion or Li-polymer batteries capable
of operating with an input voltage reached 2.5V. It
is a complete charger device designed to work with
an USB port or 5V output AC adapter.
The EMC5050 operates with CC (constant current)
mode and CV (constant voltage) mode profiles. A
low-current preconditioning charge mode is also
provided as a trickle charging operation. The
charge current is programmable up to 1.5A with an
external resistor or a logic input. The charge voltage
is 1% accurate over the full application range.
When operating with a current-limited adapter, the
charger minimizes the thermal dissipation with
pulsed operations to prevent overheat conditions
that is commonly occurred with conventional linear
chargers. The EMC5050 reduces charge current for
thermal fold-back to ensure product safe operation.
The charger automatically re-charges the battery
when the battery voltage drops blow a recharge
threshold. The chip includes a safety timer for setting
the fast charge time limit in case of charging a dead
battery.
Additional features include preconditioning of an
over-discharged battery and charging the battery in
a safe temperature range with an NTC thermistor
interface. The thermally enhanced TQFN packages
are offered for space limited handheld applications.
Features
Complete Charger for Single-Cell Li-ion Batteries
Charges from either AC Adapter or USB Port
Integrated Power Pass Device with Current
Sensing
No External Blocking Diode Required
Pre-charge Condition with Safety Timing
1% Charger Voltage Accuracy
Programmable Current Limit up to 1.5A
Programmable End-of-Charge Current
Sleep Mode for Power Saving
Charge Current Thermal Fold-back
NTC Thermistor Interface for Battery Temperature
Monitor
Stand-Alone or Integrated Charger
Ambient Temperature Range: -40°C to +85°C
Thermally-Enhanced TQFN-16L 4mmx4mm
Packages
Pb-Free Plus Anneal Available (RoHS Compliant
Applications
PDAs, Cell Phones and Smart Phones
Digital Camera, MP3 and Handheld Gamming
Portable Instruments including Medical
Handhelds
Self-Charging Battery Packs
Stand-Alone Chargers or USB Port Chargers
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Apr. 2012
Revision: 0.2
1/14
1 page  
ESMT/EMP
Charge State Flow Chart
EMC5050
Fig. 3
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Apr. 2012
Revision: 0.2
5/14
5 Page 
ESMT/EMP
Application Circuit
Fig. 6 External Power Path Application Circuit
200K •150K = 85.7KΩ
200K + 150K
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Apr. 2012
Revision: 0.2
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet EMC5050-42HC16NRR.PDF ] | |
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