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LTC4099EPDCPBF, LTC4099EUDC, LTC4100

Table of contents:
Info of LTC4099EPDCPBF
Info of LTC4099EUDC
Info of LTC4100

LTC4099EPDCPBF, LTC4099EUDC, LTC4100 Selling Leads, Datasheet

MFG:LT Package Cooled:QFN20 D/C:09+

LTC4099EPDCPBF, LTC4099EUDC, LTC4100 Picture

LTC4099EPDCPBF, LTC4099EUDC, LTC4100 Datasheet download

Five Points

Part Number: LTC4099EPDCPBF

MFG: LT

Package Cooled: QFN20

D/C: 09+

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LTC4100 General Description

The LTC^®4100 Smart Battery Charger is a single chip charging solution that dramatically simplifies construction of an SBS compliant system. The LTC4100 implements a Level 2 charger function whereby the charger can be programmed by the battery or by the host. A SafetySignal on the battery being charged is monitored for temperature, connectivity and battery type information. The SMBus interface remains alive when the AC power adapter is removed and responds to all SMBus activity directed to it, including SafetySignal status (via the ChargerStatus command). The charger also provides an interrupt to the host whenever a status change is detected (e.g., battery removal, AC adapter connection).

Charging current and voltage are restricted to chemistryspecific limits for improved system safety and reliability. Limits are programmable by two external resistors. Additionally, the maximum average current from the AC adapter is programmable to avoid overloading the adapter when simultaneously supplying load current and charging current. When supplying system load current, charging current is automatically reduced to prevent adapter overload.

LTC4100 Maximum Ratings

Voltage from VDD to GND ........................ 7V/0.3V
Voltage from CHGEN, DCDIV, SDA, SCL
and SMBALERT to GND ............................. 7V/0.3V
Voltage from DCIN, CLP, CLN to GND ..... 32V/0.3V
Voltage from CLP to CLN ............................... ±0.3V
PGND wrt. GND .............................................. ±0.3V
CSP, BAT to GND........................................ 28V/5V
Operating Ambient Temperature Range (Note 4)
...................................................... 40°C to 85°C
Junction Temperature Range ..... 40°C to 125°C
Storage Temperature Range ...... 65°C to 150°C
Lead Temperature (Soldering, 10 sec).......... 300°C

LTC4100 Features

· Single Chip Smart Battery Charger Controller
· 100% Compliant (Rev. 1.1) SMBus Support Allows for Operation with or without Host
· SMBus Accelerator Improves SMBus Timing
· Wide Output Voltage Range: 3.5V to 26V
· Hardware Interrupt and SMBAlert Response Eliminate Interrupt Polling
· High Efficiency Synchronous Buck Charger
· 0.5V Dropout Voltage; Maximum Duty Cycle > 98%
· AC Adapter Current Limit Maximizes Charge Rate
· ±0.8% Voltage Accuracy; ±4% Current Accuracy
· Up to 4A Charging Current Capability
· 10-Bit DAC for Charge Current Programming
· 11-Bit DAC for Charger Voltage Programming
· User-Selectable Overvoltage and Overcurrent Limits
· High Noise Immunity SafetySignal Sensor
· Available in a 24-Pin SSOP Package

LTC4100 Typical Application

·Portable Instruments and Computers
·Data Storage Systems and Battery Backup Servers

LTC4100 Connection Diagram

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