Features: Integrated Switching Full-Bridge PWM Drive Architecture
Single DC Supply Operation
Very Low Output Noise
Maximum Efficiency 90%
High Output Integrated Drivers
PSRR 70dB Typical
Differential Input To Minimize Noise
External Oscillator Synchronization
28-Pin SSOP PackageApplicationPeltier Effect (Thermoelectric Coolers) Controllers
High Efficiency H-Bridge Drive Circuits
RF Power Amplifier Electronic Cooling
CPU Electronic CoolingPinout
SpecificationsSupply Voltage (PVDD, VDD)....................................................................... -0.3V to 15V
SLEEP, STATUS, FBK+, FBK-........................................................... -0.3V to VDD +0.3V
IS- ..............................................................................................PVDD 2 to PVDD to +0.3V
RPWM, CPWM, MUTE...................................................................... -0.3V to VREF+0.3V
INPUT +, INPUT -, INAMPOUT........................................................ -0.3V to VREF+0.3V
EAIN, EAOUT, FAOUT ..................................................................... -0.3V to VREF+0.3V
CLOCK.................................................................................................. -0.3V to CN +0.3V
Operating Junction Temperature Plastic (DB Package) ............................................. 125O C
Storage Temperature Range ....................................................................... -65 O C to 150 O C
Lead Temperature (Soldering, 10 seconds)............................................................... 300 O C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.m/PRE>
DescriptionThe LX1810 is a Full-Bridge thermo-electric cooler (TEC) controller specifically designed for high
performance opto-electronic products where precise temperature control is required. These products tune or stabilize sensitive optical components n applications that include frequency tunable fiber optic lasers, EDFA amplifiers, waveguides, and other dense wavelength division multiplexing (DWDM) components. Other applications include microwave transistors in new wireless basestations.
The LX1810 uses highly efficient(>90%) pulse width modulation(PWM) technology, allowing the controller to be conveniently mounted near the TEC without adding heatto the system. The LX1810 operates on asingle voltage supply, greatly simplifying supply requirements, with an operating frequency that is high enough to eliminate detrimental thermal stresses to the TEC. The output ripple factor of the system can be maintained well below 10% thus not effecting the performance of delta T control.
Utilizing a full-bridge topology, the LX1810 can be used for both heating and cooling operations. The LX1810,
when used in conjunction with a temperature sense device, accurately regulates TEC current levels allowing tight control of temperature. Fully integrated FET drivers in a 28- Pin SSOP allows the design of a fully functional TEC controller while minimizing board space.
LX1810 Data Sheet
