PRELIMINARY CM3065 2.0 Amp Tri-Mode Low Dropout CMOS Regulator Features Product Description • The CM3065 family of very low dropout regulators offers both fixed/adjustable-output and fixed-output operation capable of delivering up to 2A of current. The CM3065 devices are fully protected, offering overload current limiting, short circuit protection, high temperature thermal shutdown, and reverse voltage protection to minimize reverse current flow into the output pin. Operates as an adjustable output or a fixed output regulator with 2 output voltage options 1.8V or 2.5V fixed output voltage versions 360mV dropout at 2.0A load current Operates from 2.2V to 5.5V input supply Low Ground current (350µA at 2.0A Load) Stable with low ESR ceramic output capacitor Current limit protection Thermal overload protection Reverse voltage protection Thermally enhanced 8-lead SOIC or 3-lead TO263 package Lead-free versions available • • • • • • • • • • The CM3065-xxSA/SF (8-lead, SOIC packaged) devices operate in either adjustable or fixed output modes. When the ADJ input is grounded, the regulator operates as a fixed output voltage device at the specified output voltage. When the ADJ input is connected to an external resistor network the device operates as an adjustable regulator. The ADJ input can also be tied directly to the OUT pin which configures the CM3065 as a 1.2V regulator. The CM3065-xxSA/SF devices feature an Enable control input (EN), which when set low, disables the device to a low quiescent current mode. Applications • • • • • Low voltage "Core" processors Graphics cards Gigabit NIC cards PC motherboards Notebook computers The CM3065-xxTO/TN (TO-263 packaged) versions operate as higher power, fixed output voltage devices and are available with 1.8V or 2.5V outputs voltages only. The CM3065 is available in a space saving, 8-lead power SOIC which has been thermally enhanced with an integral leadframe to ensure maximum junction to ambient power dissipation, or a 3-lead TO-263 package. Both packages are offered with optional lead-free finishing. Typical Application Circuit Simplified Electrical Schematic (See notes below for TO-263 devices.) CM3065-xxSA/SF VIN 3.3V 10µF IN EN IN 2.0A OUT Controller Over Current Short Circuit Over Temp VOUT EN (Note 1) R1 ADJ GND 2.2V-5.5V 100nF 10µF 1.2V Reference Voltage R2 + EN - GND Fixed Output when ADJ = GND Automatically selects Adjustable Output (when external resistors are present) 2..0 AMP Fixed 130K Adj 120K Note 1: EN pin is internally tied to VIN on CM3065-xxTO/TN devices Note 2: ADJ pin is internally tied to GND on CM3065-xxTO/TN devices. OUT ADJ (Note 2) GND © 2004 California Micro Devices Corp. All rights reserved. 08/16/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 1 PRELIMINARY CM3065 PACKAGE / PINOUT DIAGRAM TOP VIEW 2 3 4 GND GND GND GND 8 7 6 5 IN 1 GND 2 OUT 3 CM3065-XXTX 1 CM3065 XXSX EN IN OUT ADJ TOP VIEW Note: Tab (on back) is GND 3-lead TO-263 8-lead Power SOIC Note: These drawings are not to scale. PIN DESCRIPTIONS TO-263 SOIC-8 LEAD(S) LEAD(S) NAME 1 2 IN Positive input voltage for the regulator. If this input pin is greater than 2 inches from the main input filter, a 10µF ceramic capacitor is recommended for adequate filtering. 2, TAB 5-8 GND The negative reference for all voltages. Also functions as a thermal path for heat dissipation. 3 3 OUT The regulated voltage output. An output capacitor of 10µF is recommended to minimize any transient load disturbances under normal operating conditions. Additional output capacitance can be used to further improve transient load response. --- 1 EN Enable/shutdown input. When EN is asserted high (VEN ≥ 1.2V), the regulator is enabled. When EN is asserted low (VEN ≤ 0.4V), the regulator is shut down. --- 4 ADJ Feedback input. When ADJ is grounded, the device enters fixed voltage mode. When ADJ is connected to an external resistor network, the device operates as an adjustable regulator. The Adjust pin can also be tied directly to the OUT pin which configures the CM3065 as a 1.2V regulator. DESCRIPTION Ordering Information PART NUMBERING INFORMATION Standard Finish Lead-free Finish LEADS/ PINS Output Voltage Package Ordering Part Number1 Part Marking Ordering Part Number1 Part Marking 8 2.5 SOIC-8 CM3065-25SA CM3065-25SA CM3065-25SF CM3065-25SF 8 1.8 SOIC-8 CM3065-18SA CM3065-18SA CM3065-18SF CM3065-18SF 3 2.5 TO-263 CM3065-25TO CM3065-25TO CM3065-25TN CM3065-25TN 3 1.8 TO-263 CM3065-18TO CM3065-18TO CM3065-18TN CM3065-18TN Note 1: TO-263 packaged parts are fixed output. Note 2: Parts are shipped in Tape & Reel form unless otherwise specified. © 2004 California Micro Devices Corp. All rights reserved. 2 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 08/16/04 PRELIMINARY CM3065 Specifications ABSOLUTE MAXIMUM RATINGS PARAMETER ESD Protection (HBM) Pin Voltages IN, OUT, ADJ, EN RATING UNITS ±2000 V [GND - 0.4] to +6.0 V Storage Temperature Range -40 to +150 °C Operating Temperature Range Ambient Junction -40 to +85 -40 to +150 °C °C Power Dissipation (See note 1) Internally Limited W Note 1: The SOIC package used is thermally enhanced through the use of a fused integral leadframe. The power rating is based on a printed circuit board heat spreading capability equivalent to 2 square inches of copper connected to the GND pins. Typical multi-layer boards using power plane construction will provide this heat spreading ability without the need for additional dedicated copper area. (Please consult with factory for thermal evaluation assistance) STANDARD OPERATING CONDITIONS VALUE UNITS VIN PARAMETER 2.2 to 5.5 V Ambient Operating Temperature Range -40 to +85 °C Load Current 0 to 2000 mA COUT 10 ±20% µF © 2004 California Micro Devices Corp. All rights reserved. 08/16/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 3 PRELIMINARY CM3065 ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE 1) SYMBOL VOUT PARAMETER CONDITIONS Regulator Output Voltage MIN 0mA < ILOAD < 2.0A, VIN ≥ [VOUT + 0.8V], VADJ=0V TYP MAX UNITS CM3065-25 2.45 2.50 2.55 V CM3065-18 1.764 1.80 1.836 V ILIM Overload Current Limit VOUT > 1.2V 2.2 3.0 3.8 A ISC Short Circuit Current Limit VOUT < 0.2V 0.5 1.2 1.8 A Load Regulation VIN=[VOUT + 0.8V], 100mA ≤ ILOAD ≤ 1.5A 0.2 0.4 % VIN=[VOUT + 0.8V], 100mA ≤ ILOAD ≤ 2.0A 0.3 0.6 % ILOAD = 5mA; 3.0V ≤ VIN ≤ to 5.0V 0.2 0.4 % ILOAD = 100mA 18 45 mV ILOAD = 1.0A 180 450 mV ILOAD = 1.5A 270 600 mV ILOAD = 2.0A 360 700 mV 5 30 µA Regulator Enabled (EN=VIN=[VOUT + 0.8V]); ILOAD= 0mA; Note 2 325 500 µA Regulator Enabled (EN=VIN=[VOUT + 0.8V]); ILOAD= 1.5A; Note 2 330 550 µA Regulator Enabled (EN=VIN=[VOUT + 0.8V]); ILOAD= 2.0A; Note 2 350 600 µA VOUT=3.3V; VIN = 0V 30 100 µA VR LOAD VR LINE Line Regulation xx VDROPOUT Dropout Voltage IGND IROUT TDISABLE THYST Ground Current Output Reverse Leakage Regulator Disabled (EN=GND); VIN=3.3V; Note 2 Shutdown Temperature Thermal Hysteresis 160 25 °C °C Enable Pin Input (CM3065-xxSA only) VTH_EN IEN EN Input Threshold Voltage Note 2 0.4 EN Input Leakage Current 0V < VEN < 5.5V; Note 2 - 1.2 V 0.1 5 µA 0.2 0.3 V 0.1 1 µA Adjust Pin Input (output set by external resistors, CM3065-xxSA only) VTH_ADJ IEN ADJ Input Threshold Volt- Note 2 age ADJ Input Leakage Current 0.1 VADJ > 1.1V; Note 2 Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified. Note 2: Applies for CM3065-xxSA devices only. © 2004 California Micro Devices Corp. All rights reserved. 4 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 08/16/04 PRELIMINARY CM3065 Mechanical Details The CM3065 is available in either an 8-lead SOIC or a 3-lead TO-263 package. Mechanical Package Diagrams SOIC-8 Mechanical Specifications TOP VIEW Dimensions for CM3065 devices supplied in an 8-lead SOIC package are presented below. D 8 7 6 5 For complete information on the SOIC-8 package, see the California Micro Devices SOIC Package Information document. H Pin 1 Marking E PACKAGE DIMENSIONS Package SOIC Leads Dimensions 1 3 4 8 Millimeters Inches Min Max Min Max A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.004 0.010 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.19 0.150 0.165 e 2 1.27 BSC SIDE VIEW A SEATING PLANE H 5.80 6.20 0.228 0.244 L 0.40 1.27 0.016 0.050 100 pieces* # per tape and reel 2500 pieces e END VIEW 0.050 BSC # per tube A1 B C L Controlling dimension: inches Package Dimensions for SOIC-8 * This is an approximate number which may vary. © 2004 California Micro Devices Corp. All rights reserved. 08/16/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 5 PRELIMINARY CM3065 Mechanical Details (cont’d) TO-263-3 Mechanical Specifications Mechanical Package Diagrams Dimensions for CM3065 devices supplied in a 3-lead TO-263 package are presented below. E For complete information on the TO-263-3 package, see the California Micro Devices TO-263 Package Information document. L2 D TOP VIEW L 1 PACKAGE DIMENSIONS Package TO-263 Leads 3 Dimensions Millimeters Inches Max Min Max A 4.06 4.57 0.160 0.190 b 0.508 0.990 0.020 0.039 b2 1.14 1.40 0.045 0.055 c 0.457 0.737 0.018 0.029 c2 1.14 1.40 0.045 0.055 D 8.64 9.65 0.340 0.380 D1 8.00 --- 0.315 --- E 9.65 10.29 0.380 0.405 E1 6.22 --- 0.245 --- 2.54 BSC b2 b E1 A c2 SIDE VIEW D1 BACK VIEW 0.100 BSC L 14.60 15.87 0.575 0.625 L1 2.29 2.79 0.090 0.110 L2 --- 1.40 --- 0.055 L4 3 e Min e 2 0.254 BSC c LEADFORM 0.010 BSC # per tube 100 pieces* # per tape and reel 2500 pieces 0° -8° L4 L1 SEATING PLANE Controlling dimension: inches * This is an approximate amount which may vary. Package Dimensions for TO-263-3. © 2004 California Micro Devices Corp. All rights reserved. 6 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 08/16/04