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Features: Switching Regulator with Bat-TrackTM Adaptive Output Control Makes Optimal Use of Limited Input Power I2C Port for Optimal System Performance and Status Information Input Overvoltage Protection Bat-Track Control of External Step-Down Switching Regulator Maximizes Effi ciency from Automot...

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SeekIC No. : 004402463 Detail

LTC4099: Features: Switching Regulator with Bat-TrackTM Adaptive Output Control Makes Optimal Use of Limited Input Power I2C Port for Optimal System Performance and Status Information Input Overvoltage Prote...

LTC4099 Data Sheet

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Part Number:: LTC4099
Supply Ability:: 5000

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1~5000

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Negotiable

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15 Days

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Upload time: 2024/12/25

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Product Details

Description

Features:

Switching Regulator with Bat-Track^TM Adaptive Output Control Makes Optimal Use of Limited Input Power
I²C Port for Optimal System Performance and Status Information
Input Overvoltage Protection
Bat-Track Control of External Step-Down Switching Regulator Maximizes Effi ciency from Automotive and Other High Voltage Sources
Instant-On Operation with Low Battery
Optional Overtemperature Battery Conditioner Improves High Temperature Battery Safety Margin
Ideal Diode Seamlessly Connects Battery When Input Power is Limited or Unavailable
Full-Featured Li-Ion/Polymer Battery Charger
1.5A Maximum Charge Current with Thermal Limiting
Slew Control Reduces Switching EMI
Ultra-Thin (0.55mm) 20-Lead 3mm * 4mm QFN

Application

Media Players
Portable Navigation Devices
Smart Phones
Industrial Handhelds
Portable Medical Instruments

Pinout

Connection Diagram

Specifications

V_BUS, WALL (Transient) t < 1ms,
Duty Cycle < 1% ...................................... 0.3V to 7V
V_BUS, WALL (Static), BAT, BATSENS, IRQ,
NTC, DV_CC ............................................... 0.3V to 6V
SDA, SCL .......... 0.3V to Max (V_BUS, V_OUT, BAT) + 0.3V
I_OVSENS .................................................................±10mA
I_CLPROG....................................................................3mA
I_PROG, I_NTCBIAS .........................................................2mA
I_OUT, I_SW, I_BAT, I_VBUS ...................................................2A
Maximum Junction Temperature........................... 125
Operating Temperature Range.................. 40 to 85
Storage Temperature Range ................... 65 to 125
I_IRQ.........................................................................50mA
I_ACPR......................................................................±5mA

Description

The LTC®4099 is an I2C controlled high effi ciency USB PowerPath™ controller and full-featured Li-Ion/Polymer battery charger. It seamlessly manages power distribution from multiple sources including USB, a wall adapter and a Li-Ion/Polymer battery.

The LTC4099 automatically limits its input current for USB compatibility. For automotive and other high voltage applications, the LTC4099 interfaces with an external switching regulator. Both the USB input and the auxiliary input controller feature Bat-Track optimized charging to provide maximum power to the application and reduced heat in high power density applications.

The I²C port allows digital control of important application parameters including input current limit, charge current and fl oat voltage. Several status bits can also be read back via I2C.

An overvoltage protection circuit guards the LTC4099 from high voltage damage on the low voltage VBUS pin. The LTC4099 is available in the ultra-thin (0.55mm) 20-lead 3mm × 4mm QFN surface mount package.

LTC4099

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