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| ThermalMax INTEGRATED PRODUCTS LX1810 ThermoElectric Cooler Drive Controller IC PRODUCTION DATA SHEET DESCRIPTION KEY FEATURES WWW .Microsemi .C OM The 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 in 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 heat to the system. The LX1810 operates on a single 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 28Pin SSOP allows the design of a fully functional TEC controller while minimizing board space. 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 Package APPLICATIONS/BENEFITS Peltier Effect (Thermoelectric Coolers) Controllers High Efficiency H-Bridge Drive Circuits RF Power Amplifier Electronic Cooling CPU Electronic Cooling IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com PRODUCT HIGHLIGHT V IN = 15V LX1810 TEC RT LX1810 LX1810 PACKAGE ORDER INFO TA (C) 0 to 70 DB Plastic SSOP 28-Pin LX1810-CDB Note: Available in Tape & Reel. Append the letter "T" to the part number. (i.e. LX1810-CDBT) Copyright 2002 Rev. 1.0a, 10/21/2002 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 ThermalMax INTEGRATED PRODUCTS LX1810 ThermoElectric Cooler Drive Controller IC PRODUCTION DATA SHEET ABSOLUTE MAXIMUM RATINGS Supply 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) ............................................. 125OC Storage Temperature Range ....................................................................... -65 OC to 150 OC Lead Temperature (Soldering, 10 seconds)............................................................... 300 OC 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. PACKAGE PIN OUT WWW .Microsemi .C OM VREF GND NC V25 RPW M CPW M INPUT+ INPUTINAM POUT SHDN STBY STATUS EAIN EAOUT 28 14 15 CLOCK ISCP VDD PVDD P+ N+ NPPGND CN FBKFBK+ FAOUT THERMAL DATA DB Plastic SSOP 28-Pin JA 50C/W THERMAL RESISTANCE-JUNCTION TO AMBIENT, Junction Temperature Calculation: TJ = TA + (PD x JA). The JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. FUNCTIONAL PIN DESCRIPTION Pin Name VREF GND NC V25 RPWM CPWM INPUT+ INPUT INAMPOUT 5V Reference Low Current Ground No Internal Connection 2.5V Reference PWM Oscillator Timing Resistor PWM Oscillator Timing Capacitor Positive Differential Amplifier Input Negative Differential Amplifier Input Input Differential Amplifier Output IC Shutdown Control Input (active low) IC Standby Control Input (active high) UVLO Indicator (Open Collector Output) Inverting Input of Error Amplifier Error Amplifier Output Description Pin Name FAOUT FBK+ FBKCN PGND PNN+ P+ PVDD VDD CP IS CLOCK Description Feedback Amplifier Output Feedback Amplifier Non-Inverting Input Feedback Amplifier Inverting Input Supply Decoupling for NFET Drivers Output Driver High Current Ground Drive for PFET on Negative Half of Bridge Drive for NFET on Negative Half of Bridge Drive for NFET on Positive Half of Bridge Drive for PFET on Positive Half of Bridge Output Driver Supply Voltage Analog Supply Voltage Supply Decoupling for PFET Drivers Current Limit Sense Input Input / Output Clock for Synch Operation SHDN STBY STATUS EAIN EAOUT PACKAGE DATA PACKAGE DATA Copyright 2002 Rev. 1.0a, 10/21/2002 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 ThermalMax INTEGRATED PRODUCTS LX1810 ThermoElectric Cooler Drive Controller IC PRODUCTION DATA SHEET ELECTRICAL CHARACTERISTICS Unless otherwise specified, the following specifications apply over the operating ambient temperature 0C < TA < 70C. Test conditions: RPWM = 49.9k, CPWM = 100pF, VDD = PVDD = 15V Parameter Supply Voltage Supply Voltage Power Supply Rejection Ratio Oscillator Section Oscillator Frequency Charge Current Discharge Current Oscillator Peak Voltage Oscillator Valley Voltage Voltage Stability Temperature Stability Error Amplifier Input Offset Voltage DC Open Loop Gain Unity Gain Bandwidth High Output Voltage Low Output Voltage Input Common Mode Range Input Bias Current Input Amplifier Stage Gain Output Voltage, High Output Voltage, Low Input Impedance Feedback Amplifier Stage Gain Input Impedance Current Limit Comparator Voltage Sense Threshold Blanking Pulse Delay Response Time IUM Pulses required to Current Limit Latch Consecutive Clear Pulses required to reset IUM counter Reference Voltage Section Initial Accuracy Voltage Stability Temperature Stability Line Regulation Load Regulation Under voltage Lockout Section Start Threshold Voltage UV Lockout Hysteresis UVLO Delay To Output Enable VIO AOL UGBW VOH VOL IIN WWW .Microsemi .C OM Symbol VDD Test Conditions Min 7 LX1810 Typ Max 15 Units V dB kHz A A V V % % % `mV dB `mHz V `mV A V/V V `mV `k `mV/V k mV `ns `ns PSRR FOSC ICHG IDIS VPK VVAL VIN = 15V, VRIPPLE = 1VRMS, 10Hz to 10kHz -70 335 -110 110 3.4 1.6 0.6 1.0 1.5 5 60 7 (varies with VDD pin voltage) (varies with VDD pin voltage) (varies with VDD pin voltage) (varies with VDD pin voltage) VDD = 8V to 15V O O TA = 0 C to 70 C O O TA = -40 C to 125 C 2 2 IOUT = -100A IOUT = +100A VIN = 1V to VREF Set by Internal Resistors IOUT = -100A IOUT = +100A VREF -1 50 1 3.465 3.85 3.5 3.535 1.3 42 VOH VOL Set by Internal Resistors 89 91 388 210 500 250 9 2 5.000 25 2 4 0.5 5 6.5 6.5 62,500 93 190 Excluding blanking pulse (Required Number of Clock Cycles) (Required Number of Clock Cycles) 9 2 230 9 2 TA = 0 C to 70 C O O TA = -40 C to 125 C VDD = 9V to 15V IOUT = 0 to 20mA O O 50 5 10 `mV `mV `mV `mV `mV V V ELECTRICALS ELECTRICALS 0.5 (Required Number of Clock Cycles) Copyright 2002 Rev. 1.0a, 10/21/2002 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 3 ThermalMax INTEGRATED PRODUCTS LX1810 ThermoElectric Cooler Drive Controller IC PRODUCTION DATA SHEET ELECTRICAL CHARACTERISTICS (CONT) Unless otherwise specified, the following specifications apply over the operating ambient temperature 0C < TA < 70C. Test conditions: RPWM = 49.9k, CPWM = 100pF, VDD = PVDD = 15V Parameter Supply Current SHDN Current Operating Current SHDN to Output Enable SHDN Threshold Standby Section Standby Threshold Output Drivers for N-Channel MOSFETs WWW .Microsemi .C OM Symbol Test Conditions SHDN Input = 0V, TA = 25 C SHDN Input = 2V, VIN = 15V, No MOSFETs O Min LX1810 Typ 25 2.9 Max Units A connected (Required Number of Clock Cycles) 1.2 1.6 VOL VOH ISINK = 3mA ISINK = 75mA ISOURCE = 3mA, CN = 5.2V applied externally ISOURCE = 75mA, CN = 5.2V applied externally ISINK = 3mA ISINK = 75mA ISOURCE = 3mA, CP = 5.2V (applied externally) ISOURCE = 75mA, CP = 5.2V (applied externally) 5.0 1.6 1.8 100 2.0 100 2.0 100 1.5 100 1.5 `mV V V `mV V `mV V `mV V `mV V 62,500 1.45 1.7 30 1.5 30 1.5 30 1 30 1 NFET Drivers, Low Level Voltage NFET Drivers, High Level Voltage Output Drives For P-Channel MOSFETs PFET Drivers, Low Level Voltage PFET Drivers, High Level Voltage VOL VOH BLOCK DIAGRAM VDD 25 10 SHDN 1 IS27 PVDD + CLK VREF V25 CN UVLO & REFERENCE 4 5V Reference 18 220mV CLO CK 28 RPW M CPW M 5 6 SYNC O SC 24 5V Reference 26 PVDD CP CURRENT SENSE EAO UT 14 23 EAIN 13 FAULT T IMER ERRO R AMP INAMPO UT 9 S R Q Q P+ O UT PUT DRIVERS & LO G IC 22 N+ 21 N- INPUT - 8 CLK 20 P- ELECTRICALS ELECTRICALS M UTE INPUT + 15 FAO UT MUX 7 INPUT AMP M UTE 17 FBK- 16 FEEDBACK AMP STBY 11 FBK+ Copyright 2002 Rev. 1.0a, 10/21/2002 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 ThermalMax INTEGRATED PRODUCTS LX1810 ThermoElectric Cooler Drive Controller IC PRODUCTION DATA SHEET NOTES WWW .Microsemi .C OM DB 28-Pin Shrink Small Outline Package SSOP Dim Error! Not a valid link. A B C D E F G H L M P *LC Note: MILLIMETERS MIN MAX 1.65 1.85 0.25 0.38 0.13 0.22 9.90 10.50 5.00 5.60 0.65 BSC 0.05 0.21 1.73 2.00 0.65 0.95 0 8 7.65 7.90 0.10 - INCHES MIN MAX 0.065 0.073 0.009 0.015 0.005 0.008 0.390 0.413 0.197 0.221 0.025 BSC 0.002 0.008 0.068 0.078 0.025 0.037 0 8 0.301 0.311 0.004 - *Lead Coplanarity 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006") on any side. Lead dimension shall not include solder coverage. MECHANICALS MECHANICALS Copyright 2002 Rev. 1.0a, 10/21/2002 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 ThermalMax INTEGRATED PRODUCTS LX1810 ThermoElectric Cooler Drive Controller IC PRODUCTION DATA SHEET NOTES WWW .Microsemi .C OM NOTES NOTES PRODUCT PREVIEW DATA - Information contained in this document is pre-production data, and is proprietary to Linfinity. It may not be modified in any way without the express written consent of Linfinity. Product referred to herein is not guaranteed to achieve preview, preliminary or production status and product specifications, configurations, and availability may change at any time. Copyright 2002 Rev. 1.0a, 10/21/2002 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 6 |
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