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LTC1758CMS8, LTC1759, LTC1759CG.

Table of contents:
Info of LTC1758CMS8
Info of LTC1759
Info of LTC1759CG.

LTC1758CMS8, LTC1759, LTC1759CG. Selling Leads, Datasheet

MFG:LINEAR(LT) Package Cooled:3250+06 D/C:06+

LTC1758CMS8, LTC1759, LTC1759CG. Picture

LTC1758CMS8, LTC1759, LTC1759CG. Datasheet download

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Part Number: LTC1758CMS8

MFG: LINEAR(LT)

Package Cooled: 3250+06

D/C: 06+

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LTC1759 General Description

The LTC^®1759 Smart Battery Charger is a single chip charging solution that dramatically simplifies construction of an SBS compliant system. The LTC1759 implements a Level 2 charger function whereby the charger can be programmed by the battery or by the host. A thermistor 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 thermistor 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 chemistry specific 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.

LTC1759 Maximum Ratings

Voltage at V_CC, UV, BAT1, CLP,CLN, SPIN,
SENSE with respect to AGND ....................0.3V to 27V
Voltage at DCIN, BAT2 with Respect
to DGND ....................................................0.3V to 27V
Voltage at INTB, SDA, SCL, DCDIV with Respect
to DGND ..................................................... 0.3V to 7V
BOOST, BOOSTC Voltage with Respect to V_CC ........ 10V
Voltage at VDD with Respect to DGND ....... 0.3V to 7V
SW Voltage with Respect to AGND .............. 2V to V_CC
GBIAS, SYNC ............................................ 0.3V to 10V
V_C, PROG, V_SET Voltage with Respect
to AGND ......................................................0.3V to 7V
TGATE, BGATE Current Continuous .................. ±200mA
TGATE, BGATE Output Energy (per Cycle) ................ 2mJ
PGND, DGND with Respect to AGND .................... ±0.3V
Current into Any Pin ........................................ ±100mA
Operating Ambient Temperature Range ...0°C to 70°C
Operating Junction
Temperature Range .......................... 40°C to 125°C
Storage Temperature ....................... 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C

LTC1759 Features

·Single Chip Smart Battery Charger Controller
·100% Compliant (Rev 1.0) SMBus Support Allows for Operation with or without Host
·SMBus Accelerator Improves SMBus Timing
·Hardware Interrupt and SMBAlert Response Eliminate Interrupt Polling
·High Efficiency Synchronous Buck Charger
·0.5V Dropout Voltage; Maximum Duty Cycle > 99.5%
·AC Adapter Current Limit Maximizes Charge Rate*
·1% Voltage Accuracy; 5% Current Accuracy
·Up to 8A Charging Current Capability
·Dual 10-Bit DACs for Charger Voltage and Current Programming
·User-Selectable Overvoltage and Overcurrent Limits
·High Noise Immunity Thermistor Sensor
·Small 36-Lead Narrow (0.209") SSOP Package

LTC1759 Typical Application

·Portable Computers
·Portable Instruments
·Docking Stations

LTC1759 Connection Diagram

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