www.fairchildsemi.com FAN1616A 0.5A Adjustable/Fixed Low Dropout Linear Regulator Features Description • • • • • • • The FAN1616A, FAN1616A-1.8, -2.5, -3.3 and -5 are low dropout three-terminal regulators with 0.5A output current capability. These devices have been optimized for applications where transient response and minimum dropout voltage are critical. The 5V version is designed also to be used in USB Hub and Motherboard applications. Low dropout voltage Load regulation: 0.05% typical Current limit On-chip thermal limiting Standard SOT-223 and TO-252 packages Three-terminal adjustable or fixed 1.8V, 2.5V, 3.3V or 5V Specified from -40°C to +125°C On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperatures. Applications • USB Controlled Power Supply • High efficiency linear regulators for Mixed Voltage Logic, ASIC, FPGA based systems • Post regulators for switching supplies • Battery chargers • 12V to 5V, 3.3V, 2.5V, 1.8V, or adj linear regulators • Motherboard clock supplies • SDRAM Module supplies Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the bias current of the FAN1616A flows into the load, increasing efficiency. The FAN1616A series regulators are available in the industry-standard SOT-223 and TO-252 power packages. Typical Applications FAN1616A VIN = 12V VIN + VOUT 10µF R1 124Ω ADJ 9V at 0.5A + 22µF R2 768Ω VOUT = VREF(1 + R2/R1) + IAdj • R2 FAN1616A-3.3 VIN = 9V + VIN VOUT 10µF 3.3V at 0.5A + 22µF GND REV. 1.0.5 3/1/02 PRODUCT SPECIFICATION FAN1616A Pin Assignments FAN1616AS (Variable) FAN1616AS-X (Fixed) FAN1616AD (Variable) FAN1616AD-X (Fixed) Front View Front View Tab is OUT 3 IN 2 OUT 1 ADJ/GND Tab is OUT 1 2 3 4-Lead Plastic SOT-223 ΘJC = 15°C/W* ADJ/ GND IN 3-Lead Plastic TO-252 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 >50°C/W. Other mounting techniques may provide better power dissipation than 30°C/W. Absolute Maximum Ratings Parameter Min. VIN (VIN–VOUT) * IOUT Max. Unit 18 V See Figure 1 Operating Junction Temperature Range -40 125 °C Storage Temperature Range -65 150 °C 300 °C Lead Temperature (Soldering, 10 sec.) 0.6 IOUT (A) 0.5 0.4 0.3 0.2 0.1 0 0 2 4 6 8 10 12 VIN – VOUT (V) Figure 1. Absolute Maximum Safe Operating Area 2 REV. 1.0.5 3/1/02 FAN1616A PRODUCT SPECIFICATION Electrical Characteristics Operating Conditions: VIN ≤ 12V, TJ = 25°C unless otherwise specified. The • denotes specifications which apply over the specified operating temperature range. Parameter Conditions Voltage3 1.5V ≤ (VIN - VOUT) ≤ 5.75V, 10mA ≤ IOUT ≤ 0.5A Reference Output Voltage4 Line Regulation1,2 Load Regulation1,2,3 Dropout Voltage Min. Typ. Max. Units • 1.225 (-2%) 1.250 1.275 (+2%) V 10mA ≤ IOUT ≤ 0.5A FAN1616A-1.8, 3.3V ≤ VIN ≤ 12V FAN1616A-2.5, 4.0V ≤ VIN ≤ 12V FAN1616A-3.3, 4.5V ≤ VIN ≤ 12V FAN1616A-5, 6.2V ≤ VIN ≤ 12V • • • • 1.764 2.450 3.234 4.900 1.800 2.500 3.300 5.000 1.836 2.550 3.366 5.100 V V V V (VOUT + 1.5V) ≤ VIN ≤ 12V, IOUT = 10mA • 0.005 0.2 % (VIN – VOUT) = 2V, 10mA ≤ IOUT ≤ 0.5A • 0.05 0.5 % ∆VREF = 1%, IOUT = 0.5A • 1.000 1.200 V Current3 • 35 120 µA Adjust Pin Current Change3, 4 1.5V ≤ (VIN – VOUT) ≤ 12V, 10mA ≤ IOUT ≤ 0.5A • 0.2 5 µA Minimum Load Current 1.5V ≤ (VIN – VOUT) ≤ 12V • Quiescent Current VIN = VOUT + 1.25V • Ripple Rejection f = 120Hz, COUT = 22µF Tantalum, (VIN – VOUT) = 3V, IOUT = 0.5A Thermal Regulation TA = 25°C, 30ms pulse Adjust Pin mA 4 60 13 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, Juncation to Case SOT-223 15 °C/W TO-252 3 °C/W 150 °C Thermal Shutdown 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. 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. FAN1616A only. 4. Output current must be limited to meet the absolute maximum ratings of the part. REV. 1.0.5 3/1/02 3 PRODUCT SPECIFICATION FAN1616A Typical Performance Characteristics 0.10 OUTPUT VOLTAGE DEVIATION (%) DROPOUT VOLTAGE (V) 1.5 1.4 1.3 1.2 1.1 1.0 TJ = 0°C TJ = 25°C 0.9 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 1.250 3.60 1.235 Note: 1. FAN1616A Only 1.230 1.225 1.220 OUTPUT VOLTAGE (V) REFERENCE VOLTAGE (V) Figure 3. Load Regulation vs. Temperature 1.260 1.240 VOUT SET WITH 1% RESISTORS VOUT = 3.6V1 3.55 3.50 3.45 3.40 3.35 VOUT = 3.3V 3.30 1.215 3.25 1.210 -75 -50 -25 0 3.20 -75 -50 -25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) Figure 5. Output Voltage vs. Temperature 5 100 Note: 1. FAN1616A Only 90 ADJUST PIN CURRENT (µA) MINIMUM LOAD CURRENT (mA) Note: 1. FAN1616A Only 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) Figure 4. Reference Voltage vs. Temperature 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 1.245 ∆I = 0.5A 0 -75 -50 -25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) Figure 7. Adjust Pin Current vs. Temperature REV. 1.0.5 3/1/02 FAN1616A PRODUCT SPECIFICATION Typical Performance Characteristics (continued) 90 4 TO-252 70 3 60 POWER (W) RIPPLE REJECTION (dB) 80 50 40 2 SOT-223 30 20 10 1 (VIN - VOUT) ≤ 3V 0.5 ≤ VRIPPLE ≤ 2V IOUT = 0.5A 0 10 100 1K 10K 100K FREQUENCY (Hz) Figure 8. Ripple Rejection vs. Frequency REV. 1.0.5 3/1/02 0 50 60 70 80 90 100 110 120 130 140 150 CASE TEMPERATURE (°C) Figure 9. Maximum Power Dissipation 5 PRODUCT SPECIFICATION FAN1616A Mechanical Dimensions 3-Lead TO-252 Package Symbol Inches Millimeters Notes: Notes Min. Max. Min. Max. A b b2 b3 c c2 .086 .025 .030 .205 .018 .018 .094 .035 2.19 0.64 0.76 5.21 0.46 0.46 2.39 0.89 D E e H 5.33 6.22 6.35 6.73 2.29 BSC 9.40 10.41 1.40 1.78 2.74 REF 1 L L1 .210 .245 .250 .265 .090 BSC .370 .410 .055 .070 .108 REF L3 L4 .035 .025 0.89 0.64 4 .045 .215 .024 .023 .080 .040 1.14 5.46 0.61 0.58 2.03 1.02 E @PKG/ @HEATSINK b3 4 1 1. Dimensions are exclusive of mold flash, metal burrs or interlead protrusion. 2. Stand off-height is measured from lead tip with ref. to Datum -B-. 3. Foot length is measured with ref. to Datum -A- with lead surface. 4. Thermal pad contour optional within dimension b3 and L3. 5. Formed leads to be planar with respect to one another at seating place -C-. 6. Dimensions and tolerances per ASME Y14.5M-1994. 3 L3 c2 D E-PIN H L4 b2 L1 L b e -B- α = 0° – 10° -A- A -C- 6 REV. 1.0.5 3/1/02 FAN1616A PRODUCT SPECIFICATION Mechanical Dimensions 4-Lead SOT-223 Package Inches Symbol A A1 B c D E e F H I J K L M N Millimeters Min. Max. Min. Max. — — .025 — .248 .130 .071 .181 1.80 4.80 .033 .090 .264 .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 Notes D e K A H E N J M B I L A1 c REV. 1.0.5 3/1/02 F 7 PRODUCT SPECIFICATION FAN1616A Ordering Information Product Number Package FAN1616ADX TO-252 in tape and reel FAN1616ASX SOT-223 in tape and reel FAN1616AD18X TO-252 in tape and reel FAN1616AS18X SOT-223 in tape and reel FAN1616AD25X TO-252 in tape and reel FAN1616AS25X SOT-223 in tape and reel FAN1616AD33X TO-252 in tape and reel FAN1616AS33X SOT-223 in tape and reel FAN1616AD5X TO-252 in tape and reel FAN1616AS5X 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 3/1/02 0.0m 006 Stock#DS30001616 2002 Fairchild Semiconductor Corporation