cat660 Catalyst Semiconductor, cat660 Datasheet
cat660
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cat660 Summary of contents
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... Both 8-pin DIP and SOIC packages are available in the industrial temperature range. The CAT660 replaces the MAX660 and the LTC 660. In addition, the CAT660 is pin compatible with the 7660/ 1044, offering an easy upgrade for applications with 100mA loads ...
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PIN CONFIGURATION SOIC 8-Lead (V) PDIP 8-Lead (L) BOOST/FC 1 CAT CAP+ 2 660 GND 3 CAP- 4 (Top View) PIN DESCRIPTIONS Pin Number Name Inverter Mode 1 Boost/FC Frequency Control for the internal oscilla- tor. With an external oscillator ...
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... Exposure to absolute maximum ratings for prolongued time periods may affect device reliability. All voltages are with respect to ground. Operating Ambient Temperature Range = 70 C) CAT660E .............. - 0pF, inverter mode with test circuit as shown in Figure 1 unless OSC Conditions Inverter Open Inverter GND ...
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... INPUT VOLTAGE [ 100 Load INPUT VOLTAGE [V] Doc. No. MD-5000, Rev BOOST/ CAP+ OSC CAT660 3 6 GND CAP- OUT = 25˚C unless otherwise indicated. Note that the charge-pump frequency is one- A 120 100 -50 - ...
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TYPICAL OPERATING CHARACTERISTICS 5.0 4.8 4.6 4.4 4.2 4 LOAD CURRENT [mA OPEN GND BOOST = OPEN SUPPLY ...
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... With external 150 F capacitors, the internal switch resistances and the Equivalent Series Resistance (ESR) of the external capacitors determine the effective output impedance. A block diagram of the CAT660 is shown in figure 4. The CAT660 is a replacement for the MAX660 and the LTC660. Figure 3. Switched-Capacitor Equivalent Circuit ...
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... Note that the frequency appearing at CAP+ or CAP- is one-half that of the oscillator. Driving the CAT660 from an external frequency source can be easily achieved by driving Pin 7 and leaving the BOOST pin open, as shown in Figure 6. The output current from Pin 7 is small, typically CMOS can drive the OSC pin ...
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... C1 currents are approximately twice the output current and losses occur on both the charge and discharge cycle. The ESR effects are thus multiplied by four. A 0.5 ESR for C1 will have the same effect increase in CAT660 output impedance. VRIPPLE vs. FOSC VRIPPLE (mV) ...
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... Increasing the value of C2 and/or decreasing its ESR will reduce noise and ripple. WEB 843-448-9411 www.avxcorp.com 402-563-6866 www.vishay.com 619-661-6835 www.sanyo.com 847-843-7500 www.nichicon-us.com The effective output impedance of a CAT660 circuit is approximately: Rcircuit Rout 660 + (4 x ESRC1) + ESRC2 9 Email Comments avx@avxcorp.com Tantalum — Aluminum Svcsales@sanyo.com Aluminum — ...
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... TYPICAL APPLICATIONS VOLTAGE INVERSION POSITIVE-TO-NEGATIVE The CAT660 easily provides a negative supply voltage from a positive supply in the system. Figure 7 shows a typical circuit. The LV pin may be left floating for positive input voltages at or above 3.3V POSITIVE VOLTAGE DOUBLER The voltage doubler circuit shown in figure 8 gives ...
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... BATTERY V BAT 9V 3V < V BAT < 11V 150 F 1 BOOST/ CAP+ OSC CAT660 3 GND LV 4 CAP- OUT + 1 BOOST/ CAP+ OSC + CAT660 3 C1 GND LV 4 CAP- OUT Figure 10: Battery Splitter 11V 100nA) V BAT 8 + (4.5V BAT 5 - (-4 ...
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... CASCADE OPERATION FOR HIGHER NEGATIVE VOLTAGES The CAT660 can be cascaded as shown in figure 11 to generate more negative voltage levels. The output resistance is approximately the sum of the individual CAT660 output resistance where N represents the number of cascaded devices. OUT IN 2 CAT660 + 3 C1 ...
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PACKAGE OUTLINE DRAWINGS SOIC 8-Lead 150mils (V) TOP VIEW SIDE VIEW Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-012. SYMBOL MIN NOM END VIEW 13 MAX Doc. No. MD-5000, Rev. W ...
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PDIP 8-Lead 300mils (L) TOP VIEW SIDE VIEW Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-001. Doc. No. MD-5000, Rev. W SYMBOL MIN NOM END VIEW 14 MAX ...
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... Optional Product Company ID Number 660 Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is Matte-Tin. (3) The device used in the above example is a CAT660EVA-T3 (SOIC, Tape & Reel). Suffix EVA T3 Package Tape & Reel ELA: PDIP T: Tape & Reel EVA: SOIC ...
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... Updated ordering information - eliminated Commercial temp range Updated operating ambient temperature ranges Changed ordering information for CAT660EXA to CAT660EVA Changed ordering information for CAT660EXA-TE13 to CAT660EVA-TE13 Removed Preliminary Information from data sheet header Update Features and Description Update Package Outline Drawings and remove TDFN ...