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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Corporation. Copyright Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Programmable Temperature Controlled MOSFET Driver
ISL25700
The Temperature Controlled MOSFET Driver is a highly
integrated solution that combines a MOSFET driver with
overcurrent protection and two 8-bit resolution DACs on
a monolithic CMOS integrated circuit (IC).
The ISL25700 sets up and monitors temperature at the
point of interest, compares it with the user programmable
setpoint, and adjusts the output until the set temperature is
reached. An external power MOSFET, a heater, an NTC
thermistor and the ISL25700 are parts of the temperature
control loop.
It also features programmable overcurrent protection of
the MOSFET. The current protection automatically adjusts
the output voltage in order to keep MOSFET power under
user defined limits. The protection settings always
override the temperature settings that cause violation of
the current limit.
There is an additional 8-bit General Purpose DAC that is
available for application specific use.
The ISL25700 can be used in a variety of applications
where constant temperature is a key parameter.
Applications*(see page 17)
" Oven Controlled Applications with Micro Temperature
Chamber in:
-  Basestations
-  Spectrometers
-  Precision Meters
-  Precision Generators
Features
" User-programmable Setpoint via I
2
C Serial Interface
" Setpoint Temperature Range from +40癈 to +110癈
" Operational Temperature Range from -40癈 to +125癈
" 3癈 Initial Setpoint Accuracy
" Coarse and Fine Tuning Setpoint Control
-  +15癈 Coarse Adjustment
-  +0.1癈 Fine Adjustment
" ?.5癈 Long-term Drift Error
" Programmable Current Protection of External MOSFET
" 5-bit Selectable Gain Control
" Wide Power Supply Range: 3V to 15V
" Works with 20k?to 200k?External NTC Thermistor
" General Purpose 8-bit DAC - 0.4% Output Resolution
" High Reliability
-  Endurance: 10,000 Data Changes per Bit per Register
-  Register Data Retention: 10 years @ T d +125癈
" 10 Lead 糡QFN 2.1mmx1.6mm Package
" Pb-free (RoHS Compliant)
FIGURE 1. TYPICAL TEMPERATURE SETTLING TIME
100
80
60
40
20
0
0
3
6
9
12
15
TIME (MINUTES)
September 3, 2010
FN6885.0
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