FAN1587A FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Fast transient response
  • Low dropout voltage at up to 3A
  • Load regulation: 0.05% typical
  • Trimmed current limit
  • On-chip thermal limiting
  • Standard TO-220, TO-263, TO-263 center cut, and TO-252 packages

Applications

  • Pentium Class GTL+ bus supply
  • Low voltage logic supply
  • Post regulator for switching supply
  • 12V to 5V linear regulator
  • 3.3V to 1.5V linear regulator

Description

The FAN1587A, FAN1587A-1.5, and FAN1587A-3.3 are low dropout three-terminal regulators with 3A output current capa- bility. These devices have been optimized for low voltage applications including V TT bus termination, where transient response and minimum input voltage are critical. The FAN1587A is ideal for low voltage microprocessor applica- tions requiring a regulated output from 1.5V to 3.6V with an input supply of 12V or less. The FAN1587A-1.5 offers fixed 1.5V with 3A current capability for GTL+ bus V TT termina- tion. The FAN1587A-3.3 offers fixed 3.3V current capability for logic IC operation. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting pro- vides protection against any combination of overload and ambient temperature that would create excessive junction temperatures. The FAN1587A, FAN1587A-1.5, and FAN1587A-3.3 are available in the industry-standard TO-220, TO-263, TO-263 center cut, and TO-252 (DPAK) power packages. Typical Applications VIN = 12V VOUT = VREF (1+R2/R1)+IADJ *R2 22µF 22µF 22µFR1 124Ω 768Ω 22µF 9V at 3A + + VIN ADJ VOUT FAN1587A VIN = 9V 3.3V at 3A + + VIN GND VOUT FAN1587A-3.3 65-1587-16 FAN1587A 3A Adjustable/Fixed Low Dropout Linear Regulator

FAN1587A PRODUCT SPECIFICATION Pin Assignments ADJ * 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 40°C/W. Other mounting techniques can provide a thermal resistance lower than 30°C/W. OUT FRONT VIEW 3-Lead Plastic TO-220 θJC = 3°C/W INADJ OUT FRONT VIEW 3-Lead Plastic TO-263 θJC = 3°C/W* IN 123 123 GND OUT FRONT VIEW IN 123 GND OUT FRONT VIEW FAN1587AMFAN1587AM-1.5 FAN1587AT-1.5, -3.3VFAN1587AT IN 123 ADJ FRONT VIEW 3-Lead Plastic TO-263 Center Cut θJC = 3°C/W* IN Tab is Out. 123 GND FRONT VIEW FAN1587AMCFAN1587AMC-1.5, 3.3 IN 123 ADJ FRONT VIEW 3-Lead Plastic TO-252 θJC = 3°C/W* IN Tab is Out. Tab is Out. Tab is Out. 123 GND FRONT VIEW FAN1587ADFAN1587AD-1.5, 3.3 IN 12 3

Figure 1. Absolute Maximum Safe Operating Area

PRODUCT SPECIFICATION FAN1587A

Electrical Characteristics

Tj = 25°C unless otherwise specified. The denotes specifications which apply over the specified operating temperature range. 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 currrent. Guaranteed maximum output power will not be available over the full input/ output voltage range. 3. FAN1587A only. 4. FAN1587A-1.5 only. 5. FAN1587A-3.3 only. 6. Output current must be limited to meet the absolute maximum ratings of the part. Parameter Conditions Min. Typ. Max Units Reference Voltage 1.5V IN – V OUT 8.25V, 10mA I OUT 1.225 (-2%) 1.250 1.275 (+2%) V Output Voltage 4, 6 3.0V V IN 8.5V 10mA I OUT 1.47 1.5 1.53 V Output Voltage 5, 6 4.8V V IN 10.3V 10mA I OUT 3.234 3.3 3.366 V Line Regulation 1, 2 OUT + 1.5V) V IN 12V, I OUT 10mA 0.005 0.2 % Load Regulation 1, 2 IN – V OUT ) = 3V 10mA I OUT 0.05 0.5 % Dropout Voltage V REF = 1%, I OUT = 3A 1.150 1.300 V Current Limit (V IN – V OUT ) = 2V 3.1 4 A Adjust Pin Current 35 120 µ A Adjust Pin Current Change 3, 6 1.5V IN – V OUT 12V, 10mA I OUT 0.2 5 µ A Minimum Load Current 1.5V IN – V OUT 12V 10 mA Quiescent Current V IN = 5V 41 3 m A Ripple Rejection f = 120Hz, C OUT = 22 µ F Tantalum, IN – V OUT ) = 3V, I OUT = 3A 60 72 dB Thermal Regulation T A = 25 C, 30ms pulse 0.004 0.02 %/W Temperature Stability 0.5 % Long-Term Stability T A = 125 C, 1000 hrs. 0.03 1.0 % RMS Output Noise (% of V OUT T A = 25 C, 10Hz f 10kHz 0.003 % Thermal Resistance, Junction to Case TO-220 3 C/W TO-263, TO-252 3 C/W Thermal Shutdown 150

Figure 15. Application Circuit (FAN1587A) Table 1. Bill of Materials for Application Circuit for the FAN1587A connected to the output of the device.

FAN1587A PRODUCT SPECIFICATION 10 REV. 1.0.5 11/10/03 Mechanical Dimensions 3-Lead TO-263 Package A .160 .190 4.06 4.83 Symbol Inches Min. Max. Min. Max. Millimeters Notes b .020 .036 0.51 0.91 b2 .049 .051 1.25 1.30 c2 .045 .055 1.14 1.40 D .340 .380 8.64 9.65 .380 .405 9.65 10.29 .100 BSC E e L .575 .625 14.61 15.88 .090 .110 2.29 2.79 α L2 — .055 — 1.40 .017 .019 0.43 0.78R 0° 8° 0° 8° 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-.

2.54 BSC

E @PKG/ @HEATSINK D A -C- L R (2 PLCS) -A--B- E-PIN b e

PRODUCT SPECIFICATION FAN1587A REV. 1.0.5 11/10/03 11 Mechanical Dimensions (continued) 3-Lead TO-263 Center Cut Package A .160 .190 4.06 4.83 Symbol Inches Min. Max. Min. Max. Millimeters Notes b .020 .036 0.51 0.91 b2 .049 .051 1.25 1.30 c2 .045 .055 1.14 1.40 D .340 .380 8.64 9.65 .380 .405 9.65 10.29 .100 BSC E e L .575 .625 14.61 15.88 .090 .110 2.29 2.79 .050 .070 1.27 1.78 α — .055 — 1.40 .017 .019 0.43 0.78R 0° 8° 0° 8° 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-. E @PKG/ @HEATSINK D A -C- L R (2 PLCS) -A--B- E-PIN b e

PRODUCT SPECIFICATION FAN1587A REV. 1.0.5 11/10/03 12 Mechanical Dimensions (continued) 3-Lead TO-220 Package A .140 .190 3.56 4.83 Symbol Inches Min. Max. Min. Max. Millimeters Notes b .015 .040 .38 1.02 .070 1.78b1 .045 1.14 c1 .014 .022 .36 .56 øP .139 .161 3.53 4.09 D .560 .650 14.22 16.51 .380 .420 9.65 10.67 .090 .110 2.29 2.79 E e e1 .190 .210 4.83 5.33 .045 — 1.14 — .020 .055 .51 1.40 α F H1 .230 .270 5.94 6.87 .080 .115 2.04 2.92 .500 .580 12.70 14.73 L 6.35 BSC.250 BSCL1 .100 .135 2.54 3.43 3° 7° 3° 7° Q b L Q E e E-PIN øP D F A (5X)α Notes: 1. Dimension c1 apply for lead finish.

FAN1587A PRODUCT SPECIFICATION 13 REV. 1.0.5 11/10/03 Mechanical Dimensions (continued) 3-Lead TO-252 Package A .086 .094 2.19 2.39 Symbol Inches Min. Max. Min. Max. Millimeters Notes b .025 .035 0.64 0.89 .045 1.14b2 .030 0.76 c .018 .024 0.46 0.61 c2 .018 .023 0.46 0.58 D .210 .245 5.33 6.22 1 E .250 .265 6.35 6.73 .090 BSC 2.29 BSC .108 REF 2.74 REF .370 .410 9.40 10.41 e H L .055 .070 1.40 1.78 .035 .080 0.89 2.03 .025 .040 0.64 1.02 .215 5.46b3 .205 5.21 E @PKG/ @HEATSINK D A -C- H L -A- α = 0° – 10° -B- E-PIN b2 L4 b e Notes: Dimensions are exclusive of mold flash, metal burrs or interlead protrusion. Stand off-height is measured from lead tip with ref. to Datum -B-. Foot length is measured with ref. to Datum -A- with lead surface. Thermal pad contour optional within dimension b3 and L3. Formed leads to be planar with respect to one another at seating place -C-. Dimensions and tolerances per ASME Y14.5M-1994.

FAN1587A PRODUCT SPECIFICATION 11/10/03 0.0m 003 Stock#DS30001587A  2002Fairchild Semiconductor Corporation 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 de- vice 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 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.

Ordering Information

FAN1587AMX TO-263 in tape-and-reel FAN1587AMCX TO-263 center cut in tape-and-reel FAN1587AT TO-220 FAN1587ADX TO-252 in tape-and-reel FAN1587AM15X TO-263 in tape-and-reel FAN1587AMC15X TO-263 center cut in tape-and-reel FAN1587AT15 TO-220 FAN1587AD15X TO-252 in tape-and-reel FAN1587AM33X TO-263 in tape-and-reel FAN1587AMC33X TO-263 center cut in tape-and-reel FAN1587AT33 TO-220 FAN1587AD33X TO-252 in tape-and-reel 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: