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AAT2557

Features: • Battery Charger:- Input Voltage Range: 4V to 6.5V- Programmable Charging Current up to 500mA- Highly Integrated Battery Charger• Charging Device• Reverse Blocking Diode• Linear Regulator:- 300mA Output Current- Low Dropout: 400mV at 300mA- Fast Line and Load Tra...

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SeekIC No. : 004261081 Detail

AAT2557: Features: • Battery Charger:- Input Voltage Range: 4V to 6.5V- Programmable Charging Current up to 500mA- Highly Integrated Battery Charger• Charging Device• Reverse Blocking Diode...

AAT2557 Data Sheet

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Part Number:
AAT2557
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/2/15

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Product Details

Description



Features:

• Battery Charger:
- Input Voltage Range: 4V to 6.5V
- Programmable Charging Current up to 500mA
- Highly Integrated Battery Charger
• Charging Device
• Reverse Blocking Diode
• Linear Regulator:
- 300mA Output Current
- Low Dropout: 400mV at 300mA
- Fast Line and Load Transient Response
- High Accuracy: ±1.5%
- 70µA Quiescent Current
• Short-Circuit, Over-Temperature, and Current Limit Protection
• TSOPJW-14 Package
• -40°C to +85°C Temperature Range




Application

• Bluetooth® Headsets
• Cellular and DECT Phones
• Handheld Instruments
• MP3 and Portable Music Players
• PDAs and Handheld Computers
• Portable Media Players




Specifications

Symbol Description
Value
Units
VINLDO
VADP
VEN
VX
VBYP
TJ
TLEAD		 Input Voltage to GND
Adapter Voltage to GND
ENLDO, EN_BAT Voltage to GND
BAT, ISET, STAT Voltage to GND
BYP Voltage to GND
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
6.0
-0.3 to 7.5
-0.3 to 6.0
-0.3 to VADP + 0.3
-0.3 to VINLDO + 0.3
-40 to 150
300
V
V
V
V
V
°C
°C





Description

The AAT2557 is a fully integrated 500mA battery charger and a 300mA low dropout (LDO) linear regulator. The input voltage range is 4V to 6.5V for the battery charger and 2.7V to 5.5V for the linear regulator, making it ideal for applications operating with single-cell lithium-ion/polymer batteries. The battery charger is a complete constant current/ constant voltage linear charger.

AAT2557 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 AAT2557 offers over-voltage, current limit, and thermal protection. The linear regulator is designed for fast transient response and good power supply ripple rejection. Capable of up to 300mA load current, it includes short-circuit protection and thermal shutdown.

The AAT2557 is available in a Pb-free, thermallyenhanced TSOPJW-14 package and is rated over the -40°C to +85°C temperature range.






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