RC1584 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Fast transient response
  • Low dropout voltage at up to 7A
  • Load regulation: 0.05% typical
  • Trimmed current limit
  • On-chip thermal limiting
  • Standard TO-220, TO-263 and TO-263 center cut packages

Applications

  • Pentium® Class GTL+ bus supply
  • Low voltage logic supply
  • Post regulator for switching supply

Description

The RC1584 and RC1584-1.5 are low dropout three-terminal regulators with 7A output current capability. These devices have been optimized for low voltage applications including V TT bus termination, where transient response and minimum input voltage are critical. The RC1584 is ideal for low voltage microprocessor applications requiring a regulated output from 1.5V to 3.6V with an input supply of 5V or less. The RC1584-1.5 offers fixed 1.5V with 7A current capabil- ity for GTL+ bus V TT termination. 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 temperature that would create excessive junction temperatures. The RC1584 and RC1584-1.5 are available in the industry- standard TO-220, TO-263 and TO-263 center cut power packages. Typical Applications VIN = 3.3V 10µF 10µF 22µF124Ω 24.9Ω 22µF 1.5V at 7A + + VIN ADJ VOUT RC1584 VIN = 3.3V 1.5V at 7A + + VIN GND VOUT RC1584-1.5 65-1584-16 RC1584 7A Adjustable/Fixed Low Dropout Linear Regulator Pentium is a registered trademark of Intel Corporation.

RC1584 PRODUCT SPECIFICATION 2 REV. 1.0.5 7/13/00 Pin Assignments Absolute Maximum Ratings Parameter Min. Max. Unit VIN 7V Operating Junction Temperature Range 0 125 °C Storage Temperature Range -65 150 °C Lead Temperature (Soldering, 10 sec.) 300 °C ADJ * θJA can vary from 20°C/W to >40°C/W with various mounting techniques. 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 RC1584MRC1584M-1.5 RC1584T-1.5RC1584T IN 123 ADJ FRONT VIEW 3-Lead Plastic TO-263 Center Cut θJC = 3°C/W* IN Tab is Out. 123 GND FRONT VIEW RC1584MCRC1584MC-1.5 IN 123 65-1584-02

PRODUCT SPECIFICATION RC1584 REV. 1.0.5 7/13/00 3

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. RC1584 only. 4. RC1584-1.5 only. Parameter Conditions Min. Typ. Max Units Reference Voltage3 1.5V ≤ (VIN – VOUT ) ≤ 5.75V, 10mA ≤ IOUT ≤ 7A

  • 1.225 (-2%) 1.250 1.275 (+2%) V Output Voltage4 3.3V ≤ VIN ≤ 7V 10mA ≤ IOUT ≤ 7A
  • 1.47 1.5 1.53 V Line Regulation1, 2 (VOUT + 1.5V) ≤ VIN ≤ 7V, IOUT = 10mA
  • 0.005 0.2 % Load Regulation1, 2 (VIN – VOUT ) = 3V 10mA ≤ IOUT ≤ 7A
  • 0.05 0.5 % Dropout Voltage ∆VREF = 1%, IOUT = 7A • 1.150 1.300 V Current Limit (V IN – VOUT ) = 2V • 7.1 8 A Adjust Pin Current3 • 35 120 µA Adjust Pin Current Change3 1.5V ≤ (VIN – VOUT ) ≤ 5.75V, 10mA ≤ IOUT ≤ 7A
  • 0.2 5 µA Minimum Load Current 1.5V ≤ (VIN – VOUT ) ≤ 5.75V • 10 mA Quiescent Current V IN = 5V • 41 3 m A Ripple Rejection f = 120Hz, C OUT = 22µF Tantalum, (VIN – VOUT ) = 3V, IOUT = 7A 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 VOUT ) TA = 25°C, 10Hz ≤ f ≤ 10kHz 0.003 % Thermal Resistance, Junction to Case TO-220 3 °C/W TO-263 3 °C/W Thermal Shutdown 150 °C

PRODUCT SPECIFICATION RC1584 REV. 1.0.5 7/13/00 9 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

RC1584 PRODUCT SPECIFICATION 10 REV. 1.0.5 7/13/00 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 RC1584 REV. 1.0.5 7/13/00 11 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.

RC1584 PRODUCT SPECIFICATION 7/13/00 0.0m 001 Stock#DS30001584  1998 Fairchild 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 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

Ordering Information

RC1584MC TO-263 center cut RC1584T TO-220 RC1584M-1.5 TO-263 RC1584MC-1.5 TO-263 center cut RC1584T-1.5 TO-220