CAT3626 6-Channel LED Driver with I2C™ Interface FEATURES PRODUCT DESCRIPTION The CAT3626 is a high efficiency 1x/1.5x fractional charge pump with programmable dimming current in six LED channels. To ensure uniform brightness in LCD backlight applications, each LED channel delivers an accurate regulated current. Drives 6 LED channels Independent current on 3 pairs of LEDs I2C serial interface programming Adjustable current to 32mA in 0.5mA step Power efficiency up to 91% Fractional pump 1x/1.5x Low noise input ripple Fixed High Frequency Operation 1MHz “Zero” Current Shutdown Mode Soft start and current limiting Short circuit protection Thermal shutdown protection Low noise and input ripple is achieved by operating at a constant switching frequency of 1MHz which allows the use of small external ceramic capacitors. The 1x/1.5x fractional charge pump supports a wide range of input voltages from 3V to 5.5V with efficiency up to 91%, and is ideal for Li-Ion battery powered devices. The LED channels are configured into three independent pairs, each containing 2 matched channels. Each pair can be separately programmed from zero to 32mA, 2 in 0.5mA resolution steps, using the I C serial interface. Any individual channel can be disabled while others remain active. When the enable input (EN) is low, the device is in shutdown mode drawing zero current. APPLICATIONS RGB LEDs LCD and keypad Backlighting Cellular Phones, PDAs Digital Cameras The device is available in a 16-pad TQFN package with a max height of 0.8mm. ORDERING INFORMATION Part Number Package CAT3626HV4-T2 TQFN-16 (1) CAT3626HV4-GT2 TQFN-16 (2) Quantity per Reel 2000 2000 Package Marking G626 CDAJ For Ordering Information details, see page 14. Notes: (1) Matte-Tin Plated Finish (RoHS-compliant) (2) NiPdAu Plated Finish (RoHS-compliant) TYPICAL APPLICATION CIRCUIT PIN CONFIGURATION TQFN 16-pad 4 x 4mm (Top View) LEDA2 LEDB1 LEDB2 LEDC1 16 LEDA1 15 14 C1- VIN 13 1 12 LEDC2 SDA 2 11 GND SCL 3 10 C2+ 4 3V to 5.5V 6 7 8 VOUT VIN C1- C1+ C2- CIN C2+ pair A pair B pair C VOUT CAT3626 COUT LEDA1 LEDA2 LEDB1 LEDB2 LEDC1 LEDC2 1µF ENABLE 9 C25 C1+ VIN I2C Interface EN 1µF 1µF EN SDA SCL 1µF 20mA GND 2 2 I C is a trademark of Philips Corporation. Catalyst Semiconductor is licensed by Philips Corporation to carry the I C bus protocol. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1 Doc. No. MD-5014 Rev. D CAT3626 ABSOLUTE MAXIMUM RATINGS Parameters VIN, LEDxx voltage VOUT, C1±, C2± voltage EN, SDA, SCL voltage Storage Temperature Range Junction Temperature Range Lead Temperature Ratings 6 7 VIN + 0.7V -65 to +160 -40 to +150 300 Units V V V ºC ºC ºC RECOMMENDED OPERATING CONDITIONS Parameter VIN Ambient Temperature Range LED forward voltage ILED per LED pin Range 3 to 5.5 -40 to +85 Up to 4.2 0 to 32 Units V ºC V mA Typical application circuit with external components is shown on page 1. ELECTRICAL OPERATING CHARACTERISTICS VIN = 3.6V, EN = High, ambient temperature of 25ºC (over recommended operating conditions unless specified otherwise) Symbol Parameter IQ Quiescent Current IQSHDN Shutdown Current ILED LED Current Range with 6 LEDs ILED-ACC LED Current Accuracy 1mA ≤ ILED ≤ 31mA ±3 % ILED-DEV LED Channel Matching (ILED - ILEDAVG) / ILEDAVG ±3 % ROUT Output Resistance (open loop) 1x mode, IOUT = 120mA 1.5x mode, IOUT = 120mA 0.5 2.8 Ω Ω FOSC Charge Pump Frequency ISC_MAX Output short circuit Current Limit VOUT < 0.5V 60 mA IIN_MAX 1x mode, VOUT > 1V 300 mA VHI VLO Input Current Limit EN Pin - Input Leakage - Logic High Level - Logic Low Level 2 I C SDA, SCL - High Level Input Voltage - Low Level Input Voltage TSD Thermal Shutdown 165 ºC THYS Thermal Hysteresis Under-voltage lock out (UVLO) threshold 20 ºC 2 V IEN VHI-EN VLO-EN VUVLO Doc. No. MD-5014 Rev. D Test Conditions 1x mode, all LEDs Off 1x mode, all LEDs On 1.5x mode, all LEDs Off VEN = 0V Min Typ 0.5 2.2 3.5 0 0 0.8 1 1 Units mA mA mA µA 32 mA 1.3 1 -1 1.3 0.7 x VIN 2 Max MHz 0.4 µA V V 0.3 x VIN V V © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT3626 A.C. CHARACTERISTICS For 3V ≤ VIN ≤ 5.5V, over full ambient temperature range -40 to +125°C (over recommended operating conditions unless specified otherwise). Symbol Parameter fSCL Min Max Unit Clock Frequency 400 kHz tAA SCL Low to SDA Data Out and ACK Out 0.9 µs tBUF Bus Free Time Before a New Transmission Can Start 1.2 µs tHD:STA Start Condition Hold Time 0.6 µs tLOW Clock Low Period 1.2 µs tHIGH Clock High Period 0.6 µs tSU:STA Start Condition Setup Time (For a Repeated Condition) 0.6 µs tHD:DAT Data In Hold Time 0 ns tSU:DAT Data In Setup Time 100 ns tR SDA and SCL Rise Time 0.3 µs tF SDA and SCL Fall Time 300 ns tSU:STO Stop Condition Setup Time 0.6 µs tDH Data Out Hold Time 50 ns tF tHIGH Typ tR tLOW tLOW SCL tSU:STA tSU:DAT tHD:SDA tSU:STO SDA IN tAA tHD:DAT tBUF tDH SDA OUT Figure 1. I2C Bus Timing Characteristics © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 Doc. No. MD-5014 Rev. D CAT3626 TYPICAL CHARACTERISTICS VIN = 3.6V, IOUT = 90mA (6 LEDs at 15mA), EN = VIN, CIN = C1 = C2 = COUT = 1µF, TAMB = 25ºC, unless otherwise specified. Efficiency vs. Supply Voltage (6 LEDs) 100 1x Mode Efficiency vs. Total LED Current (6 LEDs) 100 15mA per LED 80 70 60 1.5x Mode 50 20mA per LED 80 70 60 0 4.2 4.0 3.8 3.6 3.4 3.2 3.0 SUPPLY VOLTAGE [V] 0.8 0.6 0.4 6 LEDs OFF 0.2 0 3.0 0.6 0.4 0.2 6 LEDs OFF 0.0 -40 QUIESCENT CURRENT [mA]. 4 3 2 6 LEDs OFF 0 3.2 3.4 3.6 3.8 4.0 SUPPLY VOLTAGE [V] 0 40 80 TEMPERATURE [°C] 120 Quiescent Current vs. Temperature (1.5x Mode) 5 3.0 0.8 3.2 3.4 3.6 3.8 4.0 4.2 SUPPLY VOLTAGE [V] Quiescent Current vs. Supply Voltage (1.5x Mode) 1 50 100 150 200 TOTAL LED CURRENT [mA] Quiescent Current vs. Temperature (1x Mode) QUIESCENT CURRENT [mA]. QUIESCENT CURRENT [mA] Quiescent Current vs. Supply Voltage (1x Mode) QUIESCENT CURRENT [mA]. VIN = 3.2V (1.5x mode) 50 40 40 Doc. No. MD-5014 Rev. D VIN = 4V (1x mode) 90 EFFICIENCY [%] EFFICIENCY [%] 90 4.2 5 4 3 2 1 6 LEDs OFF 0 -40 4 0 40 80 TEMPERATURE [°C] 120 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT3626 TYPICAL CHARACTERISTICS VIN = 3.6V, IOUT = 90mA (6 LEDs at 15mA), EN = VIN, CIN = C1 = C2 = COUT = 1µF, TAMB = 25ºC, unless otherwise specified. LED Current Change vs. Temperature 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 LED CURRENT CHANGE [%] LED CURRENT CHANGE [%] LED Current Change vs. Supply Voltage 1x Mode 1.5x Mode 3.0 3.2 3.4 3.6 3.8 4.0 SUPPLY VOLTAGE [V] 4.2 -40 1.2 1.1 1.0 0.9 0.8 0.7 3.2 3.4 3.6 3.8 SUPPLY VOLTAGE [V] 4.0 80 1.3 1.2 1.1 1.0 0.9 0.8 0.7 -40 0 40 80 TEMPERATURE [°C] 120 Output Resistance vs. Supply Voltage(1.5x Mode) Output Resistance vs. Supply Voltage (1x Mode) 4.0 OUTPUT RESISTANCE [Ω] . 1.0 OUTPUT RESISTANCE [Ω] . -20 0 20 40 60 TEMPERATURE [°C] Switching Frequency vs. Temperature 1.3 SWITCHING FREQUENCY [MHz] SWITCHING FREQUENCY [MHz] Switching Frequency vs. Supply Voltage 3.0 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 0.8 0.6 0.4 0.2 0.0 3.0 3.2 3.4 3.6 3.8 4.0 SUPPLY VOLTAGE [V] © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 4.2 3.5 3.0 2.5 2.0 1.5 1.0 3.0 5 3.2 3.4 3.6 3.8 4.0 SUPPLY VOLTAGE [V] 4.2 Doc. No. MD-5014 Rev. D CAT3626 TYPICAL CHARACTERISTICS VIN = 3.6V, IOUT = 90mA (6 LEDs at 15mA), EN = VIN, CIN = C1 = C2 = COUT = 1µF, TAMB = 25ºC, unless otherwise specified. Power Up with 6 LEDs at 15mA (1x Mode) Power Up with 6 LEDs at 15mA (1.5x Mode) Enable Power Down (1x Mode) Enable Power Down (1.5x Mode) Switching Waveforms in 1.5x Mode Operating Waveforms in 1x Mode Doc. No. MD-5014 Rev. D 6 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT3626 TYPICAL CHARACTERISTICS VIN = 3.6V, IOUT = 90mA (6 LEDs at 15mA), EN = VIN, CIN = C1 = C2 = COUT = 1µF, TAMB = 25ºC, unless otherwise specified. Line Transient Response in 1x mode Foldback Current Limit OUTPUT VOLTAGE [V] 4.0 3.5 3.0 2.5 1x Mode 2.0 1.5 1.0 0.5 0.0 0 SDA, SCL VIH vs. Supply Voltage 400 SDA, SCL VIL vs. Supply Voltage 4.0 4.0 3.5 3.5 3.0 3.0 2.5 VIL [V] VIH [V] 100 200 300 OUTPUT CURRENT [mA] 2.0 1.5 1.0 2.5 2.0 1.5 1.0 0.5 0.5 0.0 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE [V] © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 0.0 5.5 3.0 7 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE [V] 5.5 Doc. No. MD-5014 Rev. D CAT3626 PIN DESCRIPTIONS Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name LEDA1 SDA SCL EN VOUT VIN C1C1+ C2C2+ GND LEDC2 LEDC1 LEDB2 LEDB1 LEDA2 TAB Function Cathode terminal of LED A1 I2C Serial data input/output I2C Serial clock input Enable input Charge pump output connected to the LED anodes Supply voltage Bucket capacitor 1 terminal Bucket capacitor 1 terminal Bucket capacitor 2 terminal Bucket capacitor 2 terminal Ground reference Cathode terminal of LED C2 Cathode terminal of LED C1 Cathode terminal of LED B2 Cathode terminal of LED B1 Cathode terminal of LED A2 Connect to Ground on PCB PIN FUNCTION VIN is the supply pin for the charge pump. A small 1μF ceramic bypass capacitor is required between the VIN pin and ground near the device. The operating input voltage range is from 2.2V to 5.5V. Whenever the input supply falls below the undervoltage threshold (2V), all LEDs channels will be automatically disabled. GND is the ground reference for the charge pump. The pin must be connected to the ground plane on the PCB. EN is the enable logic input for the driver. Guaranteed levels of logic high and logic low are set at 1.3V and 0.4V respectively. When EN is initially taken high, the device becomes enabled and all LED currents remain at 0mA. To place the device into zero current shutdown mode, the EN pin must be held low. C2+, C2- are connected to each side of the 1μF ceramic bucket capacitor C2. C1+, C1- are connected to each side of the 1μF ceramic bucket capacitor C1. LEDxx provide the internally regulated current to the six LED cathodes. These pins enter a high-impedance zero-current state whenever the device is placed in shutdown mode. In applications using less than six LEDs, the unused channels should be disabled through the RegEn register. 2 SDA is the I C serial data line. This is a bidirectional line allowing data to be written into and read from the four registers in the driver. Registers RegA/B/C set the LED current in each pair of channels, while RegEn sets the On/Off state independently of each channel. TAB is the exposed pad underneath the package. For best thermal performance, the tab should be soldered to the PCB and connected to the ground plane. SCL is the I2C serial clock input. VOUT is the charge pump output that is connected to the LED anodes. A small 1μF ceramic bypass capacitor is required between the VOUT pin and ground near the device. Doc. No. MD-5014 Rev. D 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT3626 BLOCK DIAGRAM 1µF C1- VIN C1+ C2- 1µF C2+ VOUT 1x mode (LDO) 1.5x Charge Pump CIN COUT 1µF 1µF Mode Control 1MHz Oscillator EN LEDA1 LEDA2 LEDB1 Reference Voltage LEDB2 LEDC1 LEDC2 Current Setting DAC 6 Current Sink Regulators SDA SCL Serial Interface Registers GND Figure 2. CAT3626 Functional Block Diagram BASIC OPERATION LED CURRENT SETTING At power-up, the CAT3626 starts operating in 1x mode where the output will be approximately equal to the input supply voltage (less any internal voltage losses). If the output voltage is sufficient to regulate all LEDs currents the device remains in 1x operating mode. The LED current setting is programmed via the I2C serial interface and is stored in four If the input voltage is insufficient or falls to a level where the regulated currents cannot be maintained, the device automatically switches (after a fixed time of 400µs) into 1.5x mode. RegA stores the LED current for group A (LEDA1 and LEDA2 channels), RegB stores the LED current for group B (LEDB1 and LEDB2 channels), In 1.5x mode, the output is approximately equal to 1.5 times the input supply voltage (less any internal voltage losses). RegC stores the LED current for group C (LEDC1 and LEDC2 channels), RegEn selects the on/off state of each of the 6 LED channels. 8-bit registers RegA, RegB, RegC and RegEn as follows: The above sequence is repeated each and every time the chip is either powered-up or taken out of shutdown (via EN pin), or the RegEn register is accessed by write cycle. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice At each write access to RegEn, the driver automatically reconfigures to the mode (1x or 1.5x) that provides the highest efficiency. 9 Doc. No. MD-5014 Rev. D CAT3626 Table 1. Register address and data configuration (1) Register name RegA RegB RegC Register Address 0 1 2 RegEn Bit 7 X X X 3 Bit 6 X X X X Bit 5 Bit 4 Bit pattern Bit 3 Bit 2 Bit 1 Bit 0 See Table 2 for values X LEDC2 LEDC1 LEDB2 LEDB1 LEDA2 LEDA1 On = 1 Off = 0 On = 1 Off = 0 On = 1 Off = 0 On = 1 Off = 0 On = 1 Off = 0 On = 1 Off = 0 The table 2 lists the various LED currents with the associated RegA, RegB, and RegC register values. Table 2. LED Current Selection and Register Value(1) LED current D7 (mA) 0.5 X 1.0 X 1.5 X 2.0 X 2.5 X 3.0 X 3.5 X 4.0 X 4.5 X 5.0 X 5.5 X 6.0 X 6.5 X 7.0 X 7.5 X 8.0 X 8.5 X 9.0 X 9.5 X 10.0 X 10.5 X 11.0 X 11.5 X 12.0 X 12.5 X 13.0 X 13.5 X 14.0 X 14.5 X 15.0 X 15.5 X 16.0 X D6 D5 D4 D3 D2 D1 D0 Dec X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 LED current D7 (mA) 16.5 X 17.0 X 17.5 X 18.0 X 18.5 X 19.0 X 19.5 X 20.0 X 20.5 X 21.0 X 21.5 X 22.0 X 22.5 X 23.0 X 23.5 X 24.0 X 24.5 X 25.0 X 25.5 X 26.0 X 26.5 X 27.0 X 27.5 X 28.0 X 28.5 X 29.0 X 29.5 X 30.0 X 30.5 X 31.0 X 31.5 X 32.0 X D6 D5 D4 D3 D2 D1 D0 Dec X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Notes: (1) X = not used 1 = logic high 0 = logic low Doc. No. MD-5014 Rev. D 10 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT3626 I2C INTERFACE The LED driver is interfaced through a 2-wire serial I2C-bus in order to control the state and the current in each of the six LED channels. The SDA and SCL lines comply with the I2C electrical specification and should be terminated with pull-up resistors. When the bus is not used, both lines are high. The device supports the maximum bus speed of 400kbit/s. The serial bit sequence is shown below for read and write operations into the registers. Read and write instructions are Read operation: S initiated by the master controller/CPU and acknowledged by the slave LED driver. The I2C address of the driver is internally fixed to the binary value 1100110. The protocol requires that the start bit and the device address are both repeated. For further details on the I2C protocol, please refer to the I2C-Bus Specification, document number 9398 393 40011, from Philips Semiconductors. Slave address W A Register address A W A Register address A S: Start condition S Slave address R A Data A* P Write operation: S Slave address R, W: A: A*: P: Slave address: Register address: Data: Data A P Read bit (1), Write bit (0) Acknowledge sent by the slave LED driver (SDA high) Not Acknowledge sent by the master microcontroller (SDA low) Stop condition Device address 7 bits (MSB first, slave address is 1100110). Device register address 8 bits Data to read or write 8 bits Write Instruction Sequence © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 11 Doc. No. MD-5014 Rev. D CAT3626 Write Instruction Example setting 20mA current in LEDB1 and LEDB2 I2C Bus Protocol SDA 1-7 8 9 ADDRESS R/W ACK SCL 1-7 8 9 ADDRESS 1-7 8 ACK DATA 9 ACK START Condition STOP Condition TYPICAL APPLICATION The CAT3626 is ideal for driving RGB (red green blue) LEDs with common anode configuration. The individual LED currents associated with the red, green and blue LEDs are programmable independently through the I2C interface, allowing to generate an accurate color mixing. Dimming while maintaining the same color can be done by reprogramming the RegEn register on and off with the appropriate duty cycle (PWM mode). RGB LED 1µF 1µF C1- VIN C1+ C2- VIN 3V to 5.5V CIN ENABLE RGB LED CAT3626 LEDA1 LEDA2 LEDB1 LEDB2 LEDC1 LEDC2 1µF I2C Interface C2+ VOUT EN SDA SCL COUT Red Green Blue 1µF GND Doc. No. MD-5014 Rev. D 12 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT3626 PACKAGE OUTLINE DRAWING TQFN 16-Pad 4 x 4mm (HV4) (1)(2) A D DETAIL A E2 E PIN#1 ID PIN#1 INDEX AREA TOP VIEW SYMBOL MIN SIDE VIEW NOM A 0.70 0.75 0.80 0.00 0.02 0.05 e b 0.20 REF b 0.25 0.30 0.35 D 3.90 4.00 4.10 D2 2.00 – 2.25 E 3.90 4.00 4.10 E2 2.00 – 2.25 e L BOTTOM VIEW MAX A1 A3 D2 A1 L DETAIL A A 0.65 BSC 0.45 – 0.65 A3 A1 FRONT VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC standard MO-220. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 13 Doc. No. MD-5014 Rev. D CAT3626 EXAMPLE OF ORDERING INFORMATION 1 Prefix CAT Device # 3626 Suffix HV4 – Product Number 3626 Optional Company ID G T2 Lead Finish G: NiPdAu Blank: Matte-Tin(4) Tape & Reel T: Tape & Reel 2: 2,000/Reel Package HV4: TQFN 4 x 4mm For Product Top Mark Codes, click here: http://www.catsemi.com/techsupport/producttopmark.asp Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. (3) The device used in the above example is a CAT3626HV4–GT2 (TQFN, NiPdAu Plated Finish, Tape & Reel, 2,000/Reel). (4) For Matte-Tin package option, please contact your nearest Catalyst Semiconductor Sales office. Doc. No. MD-5014 Rev. D 14 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice REVISION HISTORY Date 20-Mar-06 Rev. A 19-Nov-07 B 07-Jan-08 C 30-May-08 D Reason Initial Issue Added MD- to document number Update Ordering Information Update Package Outline Drawing Added Example of Ordering Information Add Extended Temperature Range Update Package Outline Drawing Add Top Mark Code Link Copyrights, Trademarks and Patents © Catalyst Semiconductor, Inc. Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Adaptive Analog™, Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™, Quad-Mode™ and Quantum Charge Programmable™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. 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. Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 www.catsemi.com Document No: MD-5014 Revision: D Issue date: 05/30/08