CAT102 CATALYST | Alldatasheet
Document overview
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Technical content
FEATURES
I Low voltage reference: 600mV I Low temperature coefficient reference: 25ppm I Accurate 600mV reference voltage: +6mV at TJ=25°C I High PSRR: 45dB at 300kHz I High line rejection: +1mV (VCC from 2.2V to 18V)
DESCRIPTION
The CAT102 is a low-voltage reference and amplifier. Designed for the control loop of low-voltage power supplies, the reference voltage has been designed for 600mV. Over a junction temperature from -40°C to 105°C the reference voltage is within 8mV of the nominal 600mV. In addition, the error amplifier output and the supply voltage pin are on separate pins. CAT102 Precision, Adjustable Shunt Regulator (600mV Reference) - +1% Initial Accuracy - SOT23 Package I Low supply current: 300µA I Open collector output I Directly drives optocouplers I Compact 5-lead SOT23 package I Industrial temperature range: -40°°°°°C to 85°°°°°C © 2003 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Doc. No. 4007, Rev. L
APPLICATIONS
I Low temperature coefficient voltage reference I Power management I Replaces zener diodes Power supply rejection is a high 45dB at 300kHz. The output, OUT, can sink 20mA at a maximum saturation voltage of 250mV. When combined with an optocoupler, the CAT102 can be used as an error amplifier that controls the feedback loop in isolated low-output voltage switching power supplies. FUNCTIONAL DIAGRAM PIN CONFIGURATION I Isolated DC-to-DC converters I Network, telecom and cellular base station power supplies I Adjustable voltage reference OUT FB IN VREF 600mV Error Amplifier GND SOT23-5 TOP VIEW IN OUT NC FB GND
2Doc. No. 4007, Rev. L PIN DESCRIPTIONS rebmuNniPe maNniPn oitcnuF 1B Fr eifilpmarorreottupnignitrevnI 2D NGd nuorG 3T UO siytilibapactnerrucknis&ecruoS.reifilpmarorrefotuptuO .Am02 4C Nn oitcennocoN 5N Iy lppusevitisoP rebmuNtraPe gakcaPe gnaRerutarepmeT 7ET-KUE201TAC3 2-TOSniP-5C ˚58otC˚04-
ORDERING INFORMATION
TE7 = 7" Reel, 3,000 parts per reel.
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ELECTRICAL CHARACTERISTICS
Electrical characteristics are guaranteed over the full operating temperature range of -40°C to +85°C with a junction temperature from -40°C to +105°C unless otherwise specified. Ambient temperature must be de-rated based upon power dissipation and package thermal characteristics.1 Unless otherwise stated, test conditions are VIN=3V, FB=OUT, IOUT =1mA. These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolongued time periods may affect device reliability. All voltages are with respect to ground. 1. Thermal Characteristics (Θ JA) 5-lead, SOT-23: 255°C/W
4Doc. No. 4007, Rev. L TYPICAL PERFORMANCE CHARACTERISTICS 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 2.2 6 10 14 18 1 5 10 15 20 Output Voltage Change (mV) Supply Voltage (V) Output Voltage Change (mV) Load Current (mA) Load RegulationLine Regulation (at 1mA) -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 0.1 1 10 100 1000 10000 100000 Supply Current ( µA) 100 120 140 160 180 200 220 240 260 280 300 0 5 10 15 20 Supply Current vs. Load Current Power-Supply Rejection Ratio vs. Frequency Load Current (mA) Frequency (Hz) PSRR (dB)
5 Doc. No. 4007, Rev. L 570 580 590 600 610 620 630 -40 0 40 80 120 TYPICAL PERFORMANCE CHARACTERISTICS -70 -60 -50 -40 -30 -20 -10 -40 0 40 80 120 Junction Temperature (°°°°°C) FB Bias Current (nA) FB Bias Current vs. Temperature (VCC =2.5V) Reference Voltage Reference Voltage (V) -10 110 0.01 0.1 1 10 100 1000 1000 0 Frequency (kHz) Gain (dB) Gain vs. Frequency Junction Temperature (°°°°°C) 10mA
Figure 2. Opto-Feedback Application Circuit
8Doc. No. 4007, Rev. L PACKAGE OUTLINES
5 LEAD SOT-23
1.600+0.050 -0.150 TOP PACKAGE R0.1 97+0.020 0.1 52+0.0 0.575 DATUM "A" 0.200 R0.070-0.130 0.400+0.150 -0.050 2.800+0.200 1.900 0.950 PIN #5 PIN #4 1.650+0.050 -0.150 BOTTOM PACKAGE PIN #1 PIN #3 0.350+0.150 -0.000 2.900+0.100 0.418+0.250 1.200+0.250 1.100+0.200 0.100+0.050 R0.0.0-0.130 (4X) NOTES: 1. ALL DIMENSIONS ARE IN MM. 2. PACKAGE OUTLINE DIMENSIONS INCLUSIVE OF METAL BURR. 3. PACKAGE OUTLINE EXCLUSIVE OF MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.076MM. 4. ALL PACKAGE SURFACE TO BE MIRROR FINISH. 5. MOLDING WITH DIE FACING UP, AND FORMING WITH DIE FACING DOWN. 6. FOOT LENGTH TO BE MEASURED AT THE INTERCEPT POINT OF EXTERNAL LEADS AND DATUM "A".
Catalyst Semiconductor, Inc. Corporate Headquarters
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Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com Publication #: 4007 Revison: L Issue date: 8/20/03 Type: Fi nal Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ AE 2 ™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents issued to Catalyst Semiconductor contact the Company’s corporate office at 408.542.1000. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.