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EUP8084-42-25JIR1 参数 Datasheet PDF下载

EUP8084-42-25JIR1图片预览
型号: EUP8084-42-25JIR1
PDF下载: 下载PDF文件 查看货源
内容描述: 完成线性电池充电器,带有集成降压转换器和LDO [Complete Linear Battery Charger with Integrated Buck Converter and LDO]
分类和应用: 转换器电池
文件页数/大小: 23 页 / 1473 K
品牌: EUTECH [ EUTECH MICROELECTRONICS INC ]
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EUP8084
Complete Linear Battery Charger with
Integrated Buck Converter and LDO
DESCRIPTION
The EUP8084 is a complete constant-current/
constant-voltage linear battery charger for a single-cell
4.2V lithium-ion battery with a 600mA step-down
converter, and a 300mA low dropout (LDO) linear
regulator. The input voltage range is 3.75V to 5.5V for the
battery charger and 2.6V to 5.5V for the step-down
converter and linear regulator, making it ideal for
applications operating with single-cell lithium-ion/polymer
batteries.
The battery charger offers an integrated pass device,
reverse blocking protection, high accuracy current and
voltage regulation, charge status, and charge termination.
The charging current is programmable via external resistor
from 15mA to 500mA. In addition to these standard
features, the device offers current limit, thermal protection,
and soft-start.
The step-down converter is a highly integrated converter
operating at a 1.5MHz switching frequency, minimizing
the size of external components while keeping switching
losses low. It has independent input and enable pins. The
output voltage ranges from 0.6V to the input voltage.
The EUP8084 linear regulator is designed for fast transient
response and good power supply ripple rejection.
Designed for 300mA of load current, it includes
short-circuit protection and thermal shutdown.
The EUP8084 is available in a 16-lead 3mm
×
4mm TDFN
package and is rated over the -40°C to 85°C temperature
range.
FEATURES
Battery Charger:
- Input Voltage Range : 3.75 V to 5.5V
- Constant-Current/Constant-Voltage Operation
with Thermal Feedback to Maximize Charge
Rate Without Risk of Overheating
- Internal 4.5 Hour Safety Timer for Termination
- Charge Current Programmable Up to 500mA
with 5% Accuracy
- C/10 Charge Current Detection Output
- 5µA Supply Current in Shutdown Mode
Synchronous Buck Converter:
- Input Voltage Range: 2.6V to 5.5V
- Output Voltage Range: 0.6V to V
IN
- 600mA Output Current
- Up to 90% Efficiency
- 36µA Quiescent Current
- 1.5MHz Switching Frequency
- 120µs Start-Up Time
Linear Regulator:
- 300mA Output Current
- Low Dropout: 150mV at 300mA
- Fast Line and Load Transient Response
- High Accuracy:
±
1.5%
- 84µA Quiescent Current
Short-Circuit, Over-Temperature, and Current
Limit Protection
3mm
×
4mm TDFN-16 Package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Bluetooth Headsets
Cellular Phones
MP3 and Handheld Computers
Portable Media Players
Typical Application Circuit
Figure 1.
DS8084
Ver1.0
Apr. 2008
1