Programmable Temperature Controlled MOSFET Driver ISL25700 Features 2 The Temperature Controlled MOSFET Driver is a highly User-programmable setpoint via I C serial interface integrated solution that combines a MOSFET driver with Setpoint temperature range from +40C to +110C overcurrent protection and two 8-bit resolution DACs on a Operational temperature range from -40C to +125C monolithic CMOS integrated circuit (IC). 3C initial setpoint accuracy The ISL25700 sets up and monitors temperature at the point of Coarse and fine tuning setpoint control interest, compares it with the user programmable setpoint, and adjusts the output until the set temperature is reached. An external - +15C coarse adjustment power MOSFET, a heater, an NTC thermistor and the ISL25700 are - +0.1C fine adjustment parts of the temperature control loop. 0.5C long-term drift error It also features programmable overcurrent protection of the Programmable current protection of external MOSFET MOSFET. The current protection automatically adjusts the output voltage in order to keep MOSFET power under user 5-bit Selectable Gain Control defined limits. The protection settings always override the Wide Power Supply Range: 3V to 15V temperature settings that cause violation of the current limit. Works with 20k to 200k External NTC Thermistor There is an additional 8-bit General Purpose DAC that is General Purpose 8-bit DAC - 0.4% Output Resolution available for application specific use. High Reliability The ISL25700 can be used in a variety of applications where - Endurance: 10,000 Data Changes per Bit per Register constant temperature is a key parameter. - Register Data Retention: 10 years T +125C Applications 10 Lead TQFN 2.1mmx1.6mm Package Oven Controlled Applications with Micro Temperature Pb-free (RoHS Compliant) Chamber in: -Basestations Related Literature -Spectrometers AN1825, Overcoming the Minimum V Ramp Rate DD - Precision Meters Limitation of the ISL25700 - Precision Generators 100 80 60 40 20 0 03 69 12 15 TIME (MINUTES) FIGURE 1. TYPICAL TEMPERATURE SETTLING TIME July 23, 2014 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas LLC 2010, 2014. All Rights Reserved FN6885.1 Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. TEMPERATURE (C)ISL25700 Block Diagram/Application Circuit 3V TO 15V VDD VOLATILE & 2 SCL I C BUS REFERENCE NON-VOLATILE CONTROL SDA GENERATOR REGISTERS R R SENSE & POWER CIRCUITRY I SENSE PROGRAMMABLE K K K 2 3 1 OVERCURRENT PROTECTION C ADJUSTABLE SYSTEM LOOP GAIN V V REF OUT R TH PMOS V INT THERMISTOR V DAC 8-BIT GP R INT VREF DAC HEATER GND C COMP Submit Document Feedback FN6885.1 2 July 23, 2014 8-BIT FTC DAC