www.fairchildsemi.com FAN1117A 1A Adjustable/Fixed Low Dropout Linear Regulator Features Description • • • • • • The FAN1117A and FAN1117A-1.8, -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. Low dropout voltage Load regulation: 0.05% typical Trimmed current limit On-chip thermal limiting Standard SOT-223, TO-220, and TO-252 packages Three-terminal adjustable or fixed 1.8V, 2.5V, 2.85V, 3.3V, 5V 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. Applications • • • • • • Active SCSI terminators High efficiency linear regulators Post regulators for switching supplies Battery chargers 12V to 5V linear regulators Motherboard clock supplies Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the FAN1117A flows into the load, increasing efficiency. The FAN1117A series regulators are available in the industry-standard SOT-223, TO-220, and TO-252 (DPAK) power packages. Typical Applications FAN1117A VIN = 12V VIN + VOUT 9V at 1A + 10µF 22µF R1 124Ω ADJ R2 768Ω VOUT = VREF(1 + R2/R1) + IADJ • R2 FAN1117A-5 VIN = 12V + VIN VOUT 10µF 5V at 1A + 22µF GND REV. 1.1.0 11/7/03 PRODUCT SPECIFICATION FAN1117A Pin Assignments Front View Tab is VOUT Front View Tab is VOUT 1 Front View Tab is VOUT 3 IN 2 OUT 1 ADJ/GND 1 2 ADJ/ OUT GND 4-Lead Plastic SOT-223 ΘJC = 15°C/W* 2 3 3 ADJ/ OUT IN GND IN 3-Lead Plastic TO-252 ΘJC = 3°C/W* 3-Lead Plastic TO-220 ΘJC = 3°C/W* *With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane, ΘJA can vary from 30°C/W to more than 50°C/W. Other mounting techniques may provide better thermal resistance than 30°C/W. Absolute Maximum Ratings Parameter Min. VIN (VIN – VOUT) * IOUT Max. Unit 18 V See Figure 1 Operating Junction Temperature Range Storage Temperature Range 0 125 °C -65 150 °C 300 °C Lead Temperature (Soldering, 10 sec.) 1.2 IOUT (A) 1.0 0.8 0.6 0.4 0.2 0 0 2 4 6 8 10 12 14 16 18 20 VIN – VOUT (V) Figure 1. Absolute Maximum Safe Operating Area 2 REV. 1.1.0 11/7/03 FAN1117A PRODUCT SPECIFICATION Electrical Characteristics Operating Conditions: VIN ≤ 7V, TJ = 25°C unless otherwise specified. The • denotes specifications which apply over the specified operating temperature range. Parameter Min. Typ. Max. Units • 1.225 (-2%) 1.250 1.275 (+2%) V 10mA ≤ IOUT ≤ 1A FAN1117A-1.8, 3.3V ≤ VIN ≤ 8.8V FAN1117A-2.5, 4V ≤ VIN ≤ 9.5V FAN1117A-2.85, 4.35V ≤ VIN ≤ 9.85V FAN1117A-3.3, 4.8V ≤ VIN ≤ 10.3V FAN1117A-5, 6.5V ≤ VIN ≤ 12V • • • • • 1.764 2.450 2.793 3.234 4.900 1.8 2.5 2.85 3.3 5.0 1.836 2.550 2.907 3.366 5.100 V V V V V (VOUT + 1.5V) ≤ VIN ≤ 12V, IOUT = 10mA • 0.005 0.2 % (VIN – VOUT) = 2V, 10mA ≤ IOUT ≤ 1A • 0.05 0.5 % Dropout Voltage ∆VREF = 1%, IOUT = 1A • 1.100 1.200 Current Limit (VIN – VOUT) = 2V • Reference Voltage3 Output Voltage4 Line Regulation1,2 Load Regulation1,2 Conditions 1.5V ≤ (VIN – VOUT) ≤ 7V, 10mA ≤ IOUT ≤ 1A 1.1 1.5 V A • 35 120 µA 1.5V ≤ (VIN – VOUT) ≤ 7V, 10mA ≤ IOUT ≤ 1A • 0.2 5 µA Minimum Load Current 1.5V ≤ (VIN – VOUT) ≤ 15V • Quiescent Current VIN = VOUT + 1.25V • 4 13 Ripple Rejection f = 120Hz, COUT = 22µF Tantalum, (VIN – VOUT) = 3V, IOUT = 1A Thermal Regulation TA = 25°C, 30ms pulse Adjust Pin Current3 Adjust Pin Current Change3,4 60 mA 72 0.004 • Temperature Stability 10 mA dB 0.02 0.5 %/W % Long-Term Stability TA = 125°C, 1000hrs. 0.03 RMS Output Noise (% of VOUT) TA = 25°C, 10Hz ≤ f ≤ 10kHz 0.003 % Thermal Resistance, Junction SOT-223 to Case TO-252, TO-220 15 °C/W 3 °C/W Thermal Shutdown 155 °C 10 °C Thermal Shutdown Hysteresis Junction Temperature 1.0 % 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. FAN1117A only. 4. Output current must be limited to meet the absolute maximum ratings of the part. REV. 1.1.0 11/7/03 3 PRODUCT SPECIFICATION FAN1117A Typical Performance Characteristics 0.10 DROPOUT VOLTAGE DEVIATION (%) DROPOUT VOLTAGE (V) 1.5 1.4 1.3 1.2 1.1 TJ = 0°C 1.0 0.9 TJ = 25°C 0.8 TJ = 125°C 0.7 0.6 0.5 0 0 0.2 0.4 0.6 0.8 0.05 0 -0.05 -0.10 -0.15 -0.20 -75 -50 -25 0 1.0 OUTPUT CURRENT (A) 3.70 1.255 3.65 REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V) Figure 3. Load Regulation vs. Temperature 1.260 1.245 1.240 1.235 1.230 1.225 1.220 1.215 VOUT = 3.6V1 3.60 3.55 3.50 3.45 3.40 3.35 VOUT = 3.3V 3.30 Note: 1. FAN1117A Only 3.20 -75 -50 -25 0 25 50 75 100 125 150 175 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) Figure 4. Reference Voltage vs. Temperature Figure 5. Output Voltage vs. Temperature 5 100 Note: 1. FAN1117A Only 90 ADJUST PIN CURRENT (µA) MINIMUM LOAD CURRENT (mA) VOUT SET WITH 1% RESISTORS 3.25 1.210 -75 -50 -25 0 4 3 2 1 80 70 60 50 40 30 20 10 0 -75 -50 -25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) Figure 6. Minimum Load Current vs. Temperature 4 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) Figure 2. Dropout Voltage vs. Output Current 1.250 ∆I = 1A 0 -75 -50 -25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) Figure 7. Adjust Pin Current vs. Temperature REV. 1.1.0 11/7/03 FAN1117A PRODUCT SPECIFICATION Typical Performance Characteristics (continued) 90 80 RIPPLE REJECTION (dB) SHORT-CIRCUIT CURRENT (A) 2.0 1.75 1.5 1.25 70 60 50 40 30 (VIN - VOUT) = 3V 0.5 < VRIPPLE < 2V IOUT = 1A 20 10 1.0 -75 -50 -25 0 0 10 25 50 75 100 125 150 175 100 JUNCTION TEMPERATURE (°C) 1K Figure 8. Short-Circuit Current vs. Temperature 5000 OUTPUT CAP'S ESR (mΩ) VIN = 12V 7.5 POWER (W) 100K Figure 9. Ripple Rejection vs. Frequency 10 TO-252, TO-220 5 SOT-223 2.5 0 25 10K FREQUENCY (Hz) 10ma < IOUT < IMAX 4000 3000 VIN = 5V Region of Stability (SOA) Instability region 2000 1000 0 45 65 85 105 125 CASE TEMPERATURE (°C) Figure 10. Maximum Power Dissipation REV. 1.1.0 11/7/03 0 1 2 3 4 5 6 7 8 9 10 VOUT (V) Figure 11. Stability Region (SOA) vs. ESR of the COUT 5 PRODUCT SPECIFICATION FAN1117A Mechanical Dimensions 4-Lead SOT-223 Package Inches Symbol Millimeters Min. Max. Min. Max. A A1 B c D — — .025 — .248 .071 .181 1.80 4.80 E e F H I J K L M N .130 .148 — — .640 — 6.30 3.30 .840 2.29 6.71 3.71 .115 .033 .264 .012 — 10° .0008 10° .010 .124 .041 .287 — 10° 16° .0040 16° .014 2.95 .840 6.71 .310 — 10° .0203 10° .250 3.15 1.04 7.29 — 10° 16° .1018 16° .360 .033 .090 .264 Notes D e K A H E N J M B I L A1 c 6 F REV. 1.1.0 11/7/03 FAN1117A PRODUCT SPECIFICATION Mechanical Dimensions (continued) 3-Lead TO-220 Package Inches Symbol Min. A b b1 c1 øP D E e Millimeters Max. Min. .140 .190 .015 .040 .045 .070 .014 .022 .139 .161 .560 .650 .380 .420 .090 .110 .190 .210 .045 — .020 .055 .230 .270 .080 .115 .500 .580 .250 BSC .100 .135 3° 7° e1 e3 F H1 J1 L L1 Q α Notes Max. 3.56 4.83 .38 1.02 1.14 1.78 .36 .56 3.53 4.09 14.22 16.51 9.65 10.67 2.29 2.79 4.83 5.33 1.14 — .51 1.40 5.94 6.87 2.04 2.92 12.70 14.73 6.35 BSC 2.54 3.43 3° 7° Notes: 1. Dimension c1 apply for lead finish. H1 Q L e3 b1 e e1 E b L1 E-PIN øP α (5X) c1 A J1 D REV. 1.1.0 11/7/03 F 7 PRODUCT SPECIFICATION FAN1117A Mechanical Dimensions (continued) 3-Lead TO-252 Package A 6.73 6.35 5.46 5.21 6.00 MIN L3 4 6.50 MIN D 6.25 1.02 0.84 C 1 3.00 MIN 2 3 1 1.14 0.78 (0.59) 0.89 0.54 2.30 1.40 MIN 4.80 2.29 4.57 0.25 M A M C 3 LAND PATTERN RECOMMENDATION B 2.38 2.18 SEE NOTE D E1 0.58 0.48 4 D1 10.41 9.40 SEE DETAIL A 2 3 1 0.10 B 0.61 0.48 (1.54) 10° 0° 1.78 1.40 0.127 MAX 2.90 SEATING PLANE DETAIL A (ROTATED –90° SCALE 12X 8 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. 0.51 GAGE PLANE C) DIMENSIONING AND TOLERANCING PER ASME Y14.5–1994. D) HEAT SINK TOP EDGE COULD BE IN CHAMFERED CORNERS OR EDGE PROTRUSION. E) 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 REV. 1.1.0 11/7/03 PRODUCT SPECIFICATION FAN1117A Ordering Information Product Number Package FAN1117ADX TO-252 in tape and reel FAN1117ASX SOT-223 in tape and reel FAN1117AD18X TO-252 in tape and reel FAN1117AS18X SOT-223 in tape and reel FAN1117AD25X TO-252 in tape and reel FAN1117AS25X SOT-223 in tape and reel FAN1117AD285 TO-252 FAN1117AS285 SOT-223 FAN1117AD33X TO-252 in tape and reel FAN1117AS33X SOT-223 in tape and reel FAN1117AT TO-220 FAN1117AT18 TO-220 FAN1117AT25 TO-220 FAN1117AT33 TO-220 FAN1117AD5X TO-252 in tape and reel FAN1117AS5X 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. 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. www.fairchildsemi.com 11/7/03 0.0m 007 Stock#DS30001117A 2003 Fairchild Semiconductor Corporation