LTC1729 Datasheet | Linear Technology

Features s Built-In Termination: 3-Hour Time-Out s C/10 Detection with Status Indicator s Trickle Charge Preconditioning If Cell < 2.7V s Charging Enabled When 0°C < T < 50°C s Automatic Charger Present Detection s Automatic Battery Present Detection s 1- or 2-Cell, 4.1V/Cell or 4.2V/Cell Options s Precision Internal 0.2% Voltage Feedback Divider s patible with LT1505/LT1510/LT1511/ LT1512/LT1513/LT1769 s Small Footprint/Low Profile U APPLICATIO S s Cellular Phones s PDAs s Cradle Chargers s Camcorders LTC1729 Series Li-Ion Battery Charger Termination Controllers DESCRIPTIO The LTC®1729 series is a family of smart termination controllers for lithium-ion battery chargers. These ICs provide trickle charge preconditioning, temperature charge qualification, time or charge current termination, automatic charger and battery detection and status output. bining the LTC1729 series part with the LT®1510 (1.5A), LT1769 (2A), LT1511 (3A) and LT1505 (> 4A) step-down chargers is a simple operation. Connecting six pins from the LTC1729 series part to the step-down chargers pletes the integration. The LTC1729 termination controllers are also patible with step-down/ step-up (SEPIC) chargers, including the LT1512 (2A switch) and LT1513 (3A switch). The LTC1729 series is available in the 8-pin MSOP and SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO 0.22µF L1- - 10µH MMBD914L MBRM120T3 SW LT1510-5 PROG BOOST GND VC OVP SENSE 1µF 300Ω 6.19k 1k 0.1µF + COUT- - - 22µF + 4.2V MBRM120T3 INPUT...