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LTC1323CWS, LTC1324, LTC1325

Table of contents:
Info of LTC1323CWS
Info of LTC1324
Info of LTC1325

LTC1323CWS, LTC1324, LTC1325 Selling Leads, Datasheet

MFG:LT Package Cooled:00+ D/C:new

LTC1323CWS, LTC1324, LTC1325 Datasheet download

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Part Number: LTC1323CWS

MFG: LT

Package Cooled: 00+

D/C: new

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LTC1324 General Description

The LTC®1324 is a single 5V line transceiver designed to operate on Apple®LocalTalk networks. The driver features a digitally selectable low slew rate mode for reduced EMI emissions. The chip draws only 1mA quiescent current when active and 1mA in shutdown. The differential driver outputs three-state when disabled, during shutdown or when the power is off. The driver outputs will maintain high impedance even with output common mode voltages beyond the power supply rails. Both the driver outputs and receiver inputs are protected against ESD damage to ±10kV.

The LTC1324 is available in a 16-pin SO Wide package.

LTC1324 Maximum Ratings

Supply Voltage (V_CC) ................................................ 7V
Input Voltage (Logic Inputs) ..... 0.3V to (V_CC + 0.3V)
Input Voltage (Receiver Inputs) .......................... ±15V
Driver Output Voltage (Forced) ........................... ±15V
Driver Short-Circuit Duration ........................ Indefinite
Operating Temperature Range ................0°C to 70°C
Storage Temperature Range ............65°C to 150°C
Lead Temperature (Soldering, 10 sec)................300°C

LTC1324 Features

·Single Chip 5V LocalTalk Port
·Low Power: I_CC = 1mA Typ
·Shutdown Pin Reduces I_CC to 1mA Typ
·Digitally Selectable Low Slew Rate Mode for
·Reduced EMI Emmisions
·Drivers Maintain High Impedance in Three-State or with Power Off
·Thermal Shutdown Protection
·Drivers Are Short-Circuit Protected

LTC1324 Connection Diagram

LTC1325 General Description

The LTC®1325 provides the core of a flexible, cost-effective solution for an integrated battery management system.

The monolithic CMOS chip controls the fast charging of nickel-cadmium, nickel-metal-hydride, lead-acid or lithium batteries under microprocessor control. The device features a programmable 111kHz PWM constant current source controller with built-in FET driver, 10-bit ADC, internal voltage regulator, discharge-before-charge controller, programmable battery voltage attenuator and an easy-to-use serial interface.

The chip may operate in one of five modes: power shutdown, idle, discharge, charge or gas gauge. In power shutdown the supply current drops to 30mA and in the idle mode, an ADC reading may be made without any switching noise affecting the accuracy of the measurement. In the discharge mode, the battery is discharged by an external transistor while the battery is being monitored by the LTC1325 for fault conditions. The charge mode is terminated by the mP while monitoring any combination of battery voltage and temperature, ambient temperature and charge time. The LTC1325 also monitors the battery for fault conditions before and during charging. In the gas gauge mode the LTC1325 allows the total charge leaving the battery to be calculated.

LTC1325 Maximum Ratings

VDD to GND............................................................. 17V
All Other Pins............................... 0.3V to V_DD + 0.3V
Operating Temperature Range .............. 0°C to 70°C
Storage Temperature Range ...........65°C to 150°C
Lead Temperature (Soldering, 10 sec).............. 300°C

LTC1325 Features

` Fast Charge Nickel-Cadmium, Nickel-Metal-Hydride, Lithium Ion or Lead-Acid Batteries under mP Control
` Flexible Current Regulation:
Programmable 111kHz PWM Current Regulator with Built-In PFET Driver
PFET Current Gating for Use with External Current Regulator or Current Limited Transformer
` Discharge Mode
` Measures Battery Voltage, Battery Temperature and Ambient Temperature with Internal 10-Bit ADC
` Battery Voltage, Temperature and Charge Time Fault Protection
` Built-In Voltage Regulator and Programmable Battery Attenuator
` Easy-to-Use 3- or 4-Wire Serial mP Interface
` Accurate Gas Gauge Function
` Wide Supply Range: V_DD = 4.5V to 16V
` Can Charge Batteries with Voltages Greater Than VDD
` Can Charge Batteries from Charging Supplies Greater Than VDD
` Digital Input Pins Are High Impedance in Shutdown Mode

LTC1325 Typical Application

·System Integrated Battery Charger

LTC1325 Connection Diagram

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