ETA6887 Battery Charger Datasheet

ETA6887 Datasheet, PDF, Equivalent


Part Number

ETA6887

Description

3A Battery Charger

Manufacture

ETA

Total Page 4 Pages
Datasheet
Download ETA6887 Datasheet


ETA6887
ETA6887
Single Inductor, 3A Battery Charger with 2.4A USB OTG, 0.1us
True OVP and Adjustable Fuel Gauge All-in-One Solution
DESCRIPTION
ETA6887 is a switching Li-Ion battery charger capable of
delivering up to 3A of charging current to the battery and also
capable of delivering up to 2.4A in boost OTG operation. It
employs a charge pump to achieve a very fast input OVP, and
also includes an externally programmable fuel gauge system
for power indication. For charging, it uses a proprietary
control scheme that eliminates the current sense resistor for
constant current control, thereby improving efficiency and
reducing costs. It can also output a 5V voltage in the reversed
direction by boosting from the battery. Therefore, it only needs
a single inductor to provide power bi-directionally. Together
with the build-in Micro-controller functions, such as push-
button, auto load detection, and fuel gauging features,
ETA6887 is truly an ideal all-in-one solution for battery
charging and discharge applications, such as power banks,
smart phones, and tablets with only one USB port that can be
used for both charging battery and USB OTG function.
ETA6887 is in QFN4x4-28 package.
TYPICAL APPLICATION
FEATURES
Bi-Directional Power conversion with Single Inductor
Input OVP with 0.1us reaction time
Input standoff voltage up to 20V
Switching Charger
5V Synchronous Boost
Up to 95% Efficiency
Up to 3A Max charging current and 2.4A discharging
No External Sense resistor
NTC thermistor input
APPLICATIONS
Power Bank
Smart Phone / Tablet, MID
ORDERING INFORMATION
PART PACKAGE
ETA6887Q43
QFN4x4-28
TOP MARK
ETA6887
YWW2L
www.etasolution.com
1
Powering Minds of the Smart

ETA6887
ETA6887
PIN CONFIGURATION
QFN4x4-28
ABSOLUTE MAXIMUM RATINGS
(Note: Exceeding these limits may damage the device. Exposure to absolute
maximum rating conditions for long periods may affect device reliability.)
OUT Voltage .........................................0.3V to 6V
IN, INGT Voltage ..........................................0.3V to 20V
All Other Pin Voltage ..................VOUT0.3V to VOUT+0.3
SW,IN,OUT to ground current...Internally limited
Operating Temperature Range ….…–40°C to 85°C
Storage Temperature Range ……...–55°C to 150°C
Thermal Resistance
θ JC θ JA
QFN4X4-28………………………..…..2…….….30........oC/W
Lead Temperature (Soldering, 10ssec) ……….260°C
ESD HBM (Human Body Mode) ……………….………….2KV
ESD MM (Machine Mode) ……………………..……...200V
ELECTRICAL CHACRACTERISTICS
(VIN = 5V, unless otherwise specified. Typical values are at TA = 25oC.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
BUCK MODE
IN Standoff Voltage
20 V
IN Range
4.5 5.5 V
IN UVLO Voltage
Rising, Hys=500mV
4.5 V
PUMP Hiccup threshold Voltage
Falling.Vin-Vout<300mV
Rising,Hys=50mV
300 mV
PUMP Hiccup on time
7 mS
PUMP Hiccup off time
200 mS
PUMP frequence
500 KHZ
PUMP Voltage
Vingt-Vout
3.5 V
INSNS Clamp Voltage
6.4 V
INSNS OVP Voltage
Hys=300mV
6.0 V
IN Operating Current as BUCK
Switcher Enable, Switching
Switcher Enable, No Switching
5
500
mA
μA
BATTERY CHARGER
Battery CV Voltage
VTERM=0, IBAT =0mA, default 4.16 4.2 4.24 V
VTERM=LDO1V, IBAT =0mA, default 4.3 4.35 4.4 V
Charger Restart Threshold
From DONE to Fast Charge
-150 mV
Battery Pre-Condition Voltage
VBAT Rising Hys=200mV
3V
Pre-Condition Charge Current
200 mA
www.etasolution.com
2
Powering Minds of the Smart


Features ETA6887 Single Inductor, 3A Battery Char ger with 2.4A USB OTG, 0.1us True OVP a nd Adjustable Fuel Gauge All-in-One Sol ution DESCRIPTION ETA6887 is a switchi ng Li-Ion battery charger capable of de livering up to 3A of charging current t o the battery and also capable of deliv ering up to 2.4A in boost OTG operation . It employs a charge pump to achieve a very fast input OVP, and also includes an externally programmable fuel gauge system for power indication. For chargi ng, it uses a proprietary control schem e that eliminates the current sense res istor for constant current control, the reby improving efficiency and reducing costs. It can also output a 5V voltage in the reversed direction by boosting f rom the battery. Therefore, it only nee ds a single inductor to provide power b i-directionally. Together with the buil d-in Micro-controller functions, such a s pushbutton, auto load detection, and fuel gauging features, ETA6887 is truly an ideal all-in-one solution for battery charging and discharg.
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