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| www.fairchildsemi.com RC1117 1A Adjustable/Fixed Low Dropout Linear Regulator Features * * * * * * Low dropout voltage Load regulation: 0.05% typical Trimmed current limit On-chip thermal limiting Standard SOT-223, TO-263, and TO-252 packages Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V Description The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low dropout three-terminal regulators with 1A output current capability. These devices have been optimized for low voltage where transient response and minimum input voltage are critical. The 2.85V version is designed specifically to be used in Active Terminators for SCSI bus. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the RC1117 flows into the load, increasing efficiency. The RC1117 series regulators are available in the industrystandard SOT-223, TO-263 (D2PAK), and TO-252 (DPAK) power packages. Applications * * * * * * Active SCSI terminators High efficiency linear regulators Post regulators for switching supplies Battery chargers 5V to 3.3V linear regulators Motherboard clock supplies Typical Applications RC1117 VIN = 3.3V 10F ADJ + VIN VOUT R1 124 + 22F 1.5V at 1A VOUT = VREF(1 + R2/R1) + IAdj * R2 R2 24.9 RC1117-2.85 VIN = 5V 10F GND + VIN VOUT + 22F 2.85V at 1A REV. 1.3.2 10/16/03 PRODUCT SPECIFICATION RC1117 Pin Assignments Tab is VOUT IN OUT ADJ/GND 1 2 3 1 2 3 Tab is VOUT Front View 3 Tab is VOUT 2 1 4-Lead Plastic SOT-223 JC = 15C/W* ADJ/ GND IN ADJ/ GND OUT IN 3-Lead Plastic TO-252 JC = 3C/W* 3-Lead Plastic TO-263 JC = 3C/W* *With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., JA can vary from 30C/W to more than 50C/W. Other mounting techniques may provide better thermal resistance than 30C/W. Absolute Maximum Ratings Parameter VIN Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec.) 0 -65 Min. Max. 7.5 125 150 300 Unit V C C C 2 REV. 1.3.2 10/16/03 RC1117 PRODUCT SPECIFICATION Electrical Characteristics Operating Conditions: VIN 7V, TJ = 25C unless otherwise specified. The * denotes specifications which apply over the specified operating temperature range. Parameter Reference Voltage, VREF Output Voltage 3 Conditions 1.5V (VIN - VOUT) 5.75V, 10mA IOUT 1A 10mA IOUT 1A RC1117-2.5, 4V VIN 7V RC1117-2.85, 4.35V VIN 7V RC1117-3.3, 4.8V VIN 7V RC1117-5, 6.5V VIN 7V (VOUT + 1.5V) VIN 7V, IOUT = 10mA (VIN - VOUT) = 2V, 10mA IOUT 1A VREF = 1%, IOUT = 1A (VIN - VOUT) = 2V 1.5V (VIN - VOUT) 5.75, 10mA IOUT 1A 1.5V (VIN - VOUT) 5.75 VIN = VOUT + 1.25V f = 120Hz, COUT = 22F Tantalum, (VIN - VOUT) = 3V, IOUT = 1A TA = 25C, 30ms pulse * TA = 125C, 1000hrs. TA = 25C, 10Hz f 10kHz * Min. 1.225 (-2%) 2.450 2.793 3.234 4.900 Typ. 1.250 Max. 1.275 (+2%) 2.550 2.907 3.366 5.100 0.2 0.5 1.200 120 5 Units V * * * * * * * * * * * * 2.5 2.85 3.3 5.0 0.005 0.05 1.100 V V V V % % V A A A mA Line Regulation1,2 Load Regulation1,2 Dropout Voltage Current Limit Adjust Pin Current, IAdj3 Adjust Pin Current Change3 Minimum Load Current Quiescent Current Ripple Rejection Thermal Regulation Temperature Stability Long-Term Stability RMS Output Noise (% of VOUT) 1.1 1.5 35 0.2 10 4 60 72 0.004 0.5 0.03 0.003 15 3 155 10 1.0 0.02 13 mA dB %/W % % % C/W C/W C C Thermal Resistance, Junction SOT-223 to Case TO-252, TO-263 Thermal Shutdown Thermal Shutdown Hysteresis Junction Temperature Notes: 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. 2. Line and load regulation are guaranteed up to the maximum power dissipation (18W). Power dissipation is determined by input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/ output voltage range. 3. RC1117 only. REV. 1.3.2 10/16/03 3 PRODUCT SPECIFICATION RC1117 Typical Performance Characteristics DROPOUT VOLTAGE DEVIATION (%) 1.5 1.4 DROPOUT VOLTAGE (V) 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0 0 0.2 0.4 0.6 0.8 1.0 TJ = 25C TJ = 125C TJ = 0C 0.10 0.05 0 -0.05 -0.10 -0.15 -0.20 -75 -50 -25 0 I = 1A 25 50 75 100 125 150 175 OUTPUT CURRENT (A) JUNCTION TEMPERATURE (C) Figure 1. Dropout Voltage vs. Output Current 1.250 1.245 REFERENCE VOLTAGE (V) Figure 2. Load Regulation vs. Temperature 3.70 3.65 REFERENCE VOLTAGE (V) 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3.25 VOUT = 3.3V Note: 1. RC1117 Only 25 50 75 100 125 150 175 VOUT SET WITH 1% RESISTORS VOUT = 3.6V1 1.240 1.235 1.230 1.225 1.220 1.215 1.210 1.205 1.200 -75 -50 -25 0 25 50 75 100 125 150 175 3.20 -75 -50 -25 0 JUNCTION TEMPERATURE (C) JUNCTION TEMPERATURE (C) Figure 3. Reference Voltage vs. Temperature 5 MINIMUM LOAD CURRENT (mA) Figure 4. Output Voltage vs. Temperature 100 90 ADJUST PIN CURRENT (A) Note: 1. RC1117 Only 4 80 70 60 50 40 30 20 10 3 2 1 0 -75 -50 -25 0 25 50 75 100 125 150 175 0 -75 -50 -25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (C) JUNCTION TEMPERATURE (C) Figure 5. Minimum Load Current vs. Temperature Figure 6. Adjust Pin Current vs. Temperature 4 REV. 1.3.2 10/16/03 RC1117 PRODUCT SPECIFICATION Typical Performance Characteristics (continued) 2.0 SHORT-CIRCUIT CURRENT (A) 90 80 RIPPLE REJECTION (dB) 1.75 70 60 50 40 30 20 10 1.0 -75 -50 -25 0 25 50 75 100 125 150 175 0 10 (VIN - VOUT) = 3V 0.5 < VRIPPLE < 2V IOUT = 1A 100 1K 10K 100K 1.5 1.25 JUNCTION TEMPERATURE (C) FREQUENCY (Hz) Figure 7. Short-Circuit Current vs. Temperature Figure 8. Ripple Rejection vs. Frequency 10 7.5 POWER (W) TO-252 & TO-263 5 2.5 SOT-223 0 25 45 65 85 105 125 CASE TEMPERATURE (C) Figure 9. Maximum Power Dissipation REV. 1.3.2 10/16/03 5 PRODUCT SPECIFICATION RC1117 Mechanical Dimensions 4-Lead SOT-223 Package Symbol A A1 B c D E e F H I J K L M N Inches Min. -- -- .025 -- .248 .130 .115 .033 .264 .012 -- 10 .0008 10 .010 Max. .071 .181 .033 .090 .264 .148 .124 .041 .287 -- 10 16 .0040 16 .014 Millimeters Min. -- -- .640 -- 6.30 3.30 2.95 .840 6.71 .310 -- 10 .0203 10 .250 Max. 1.80 4.80 .840 2.29 6.71 3.71 3.15 1.04 7.29 -- 10 16 .1018 16 .360 Notes D e K A H E B A1 c F J M I L N 6 REV. 1.3.2 10/16/03 RC1117 PRODUCT SPECIFICATION Mechanical Dimensions 3-Lead TO-252 Package 6.73 6.35 5.46 5.21 A 6.00 MIN L3 4 6.50 MIN D 1.02 0.84 C 1 2 3 1 1.14 0.78 2.29 4.57 3 6.25 3.00 MIN (0.59) 0.89 0.54 0.25 M A M C 1.40 MIN 4.80 2.30 LAND PATTERN RECOMMENDATION B 2.38 2.18 SEE NOTE D E1 4 0.58 0.48 D1 10.41 9.40 SEE DETAIL A 2 3 1 0.10 B GAGE PLANE 0.61 0.48 10 0 0.51 NOTES: UNLESS OTHERWISE SPECIFIED A) ALL DIMENSIONS ARE IN MILLIMETERS. B) THIS PACKAGE CONFORMS TO JEDEC, TO-252, ISSUE C. VARIATION AA & AB, DATED NOV. 1999. (1.54) C) D) DIMENSIONING AND TOLERANCING PER ASME Y14.5-1994. HEAT SINK TOP EDGE COULD BE IN CHAMFERED CORNERS OR EDGE PROTRUSION. DIMENSIONS L3, D, E1 & D1 TABLE: OPTION AA OPTION AB L3 0.89 - 1.27 1.52 - 2.03 D 5.97 - 6.22 5.33 - 5.59 E1 4.32 MIN 3.81 MIN D1 5.21 MIN 4.57 MIN 1.78 1.40 2.90 0.127 MAX SEATING PLANE E) DETAIL A (ROTATED -90 SCALE 12X REV. 1.3.2 10/16/03 7 PRODUCT SPECIFICATION RC1117 Mechanical Dimensions 3-Lead TO-263 Package Inches Min. A b b2 c2 D E e L L1 L2 R .160 .020 Max. .190 .036 Millimeters Min. 4.06 0.51 Max. 4.83 0.91 Notes: 1. Dimensions are exclusive of mold flash and metal burrs. 2. Standoff-height is measured from lead tip with ref. to Datum -B-. 3. Foot length is measured with ref. to Datum -A- with lead surface (at inner R). 4. Dimensiuon exclusive of dambar protrusion or intrusion. 5. Formed leads to be planar with respect to one another at seating place -C-. Symbol Notes .049 .051 .045 .055 .340 .380 .380 .405 .100 BSC .575 .090 -- .017 0 .625 .110 .055 .019 8 1.25 1.30 1.14 1.40 8.64 9.65 9.65 10.29 2.54 BSC 14.61 2.29 -- 0.43 0 15.88 2.79 1.40 0.78 8 E @PKG/ @HEATSINK L2 c2 D L b2 E-PIN R (2 PLCS) L1 b e -B- -A- A -C- 8 REV. 1.3.2 10/16/03 PRODUCT SPECIFICATION RC1117 Ordering Information Product Number RC1117DT RC1117M RC1117MT RC1117ST RC1117D25T RC1117M25 RC1117M25T RC1117S25T RC1117M285 RC1117M285T RC1117S285T RC1117D33T RC1117M33 RC1117M33T RC1117S33T RC1117D5T RC1117M5 RC1117M5T RC1117S5T Output Adjustable Adjustable Adjustable Adjustable 2.5 volt 2.5 volt 2.5 volt 2.5 volt 2.85 volt 2.85 volt 2.85 volt 3.3 volt 3.3 volt 3.3 volt 3.3 volt 5 volt 5 volt 5 volt 5 volt Package TO-252 in tape and reel TO-263 TO-263 in tape and reel SOT-223 in tape and reel TO-252 in tape and reel TO-263 TO-263 in tape and reel SOT-223 in tape and reel TO-263 TO-263 in tape and reel SOT-223 in tape and reel TO-252 in tape and reel TO-263 TO-263 in tape and reel SOT-223 in tape and reel TO-252 in tape and reel TO-263 TO-263 in tape and reel SOT-223 in tape and reel DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. www.fairchildsemi.com 10/16/03 0.0m 005 Stock#DS30001117 2001 Fairchild Semiconductor Corporation 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. |
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