FAN1585AD FAIRCHILD [Fairchild Semiconductor], FAN1585AD Datasheet

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FAN1585AD

Manufacturer Part Number
FAN1585AD
Description
5A Adjustable/Fixed Low Dropout Linear Regulator
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet
Features
• Fast transient response
• Low dropout voltage at up to 5A
• Load regulation: 0.05% typical
• Trimmed current limit
• On-chip thermal limiting
• Packages: TO-220, TO-252, TO-263 and TO-263 Centercut
Applications
• AGTL+ bus supply for FC-PGA
• Low voltage logic supply
• Post regulator for switching supply
• 3.3V to 1.5V linear regulator
• 5V to 1.8V linear regulator
Typical Applications
FAN1585A
5A Adjustable/Fixed Low Dropout Linear Regulator
V
V
IN = 3.3V
V
IN = 3.3V
OUT
22 F
22 F
= V
REF
(1 + R2/R1) + I
+
+
V
V
FAN1585A-1.5
IN
IN
FAN1585A
ADJ
GND
Adj
• R2
V
V
OUT
OUT
Description
The FAN1585A, FAN1585A-1.5, and FAN1585A-1.8 are
low dropout three-terminal regulators with 5A output current
capability. These devices have been optimized for low volt-
age applications including V
where transient response and minimum input voltage are
critical. The FAN1585A-1.5 offers fixed 1.5V with 5A
current capabilities for AGTL+ bus V
FC-PGA. The FAN1585A is ideal for low voltage micro-
processor applications requiring a regulated output from
1.5V to 3.6V with an input supply of 5V or less, or for
FC-PGA applications with significant trace resistance.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limit-
ing provides protection against any combination of overload
and ambient temperature that would create excessive junc-
tion temperatures.
The FAN1585A series regulators are available in the industry-
standard TO-220, TO-252, TO-263 and TO-263 Centercut
power packages.
R1
124
R2
24.9
+
22 F
1.5V at 5A
+
22 F
1.5V at 5A
TT
www.fairchildsemi.com
bus termination for FC-PGA,
TT
termination for
REV. 1.1.6 7/8/05

Related parts for FAN1585AD

FAN1585AD Summary of contents

Page 1

FAN1585A 5A Adjustable/Fixed Low Dropout Linear Regulator Features • Fast transient response • Low dropout voltage • Load regulation: 0.05% typical • Trimmed current limit • On-chip thermal limiting • Packages: TO-220, TO-252, TO-263 and TO-263 ...

Page 2

FAN1585A Pin Assignments FRONT VIEW FRONT VIEW Tab is Out ADJ/ OUT IN ADJ/ GND GND 3-Lead Plastic TO-220 3-Lead Plastic TO-252 = 3 C/W JC *With package soldered to 0.5 square inch copper area over ...

Page 3

PRODUCT SPECIFICATION Electrical Characteristics Tj = 25°C unless otherwise specified. The denotes specifications which apply over the specified operating temperature range. Parameter Conditions 3 Reference Voltage 1.5V 10mA 4 Output Voltage 3.0V 10mA 5 Output Voltage 3.3V 10mA 1, 2 ...

Page 4

FAN1585A Typical Performance Characteristics 1.5 1.4 1.3 1.2 1.1 1.0 T=0 C 0.9 T=125 C T=25 C 0.8 0.7 0.6 0 OUTPUT CURRENT (A) Figure 1. Dropout Voltage vs. Output Current 1.275 1.270 1.265 1.260 1.255 ...

Page 5

PRODUCT SPECIFICATION Typical Performance Characteristics 8.0 7.0 6.0 5.0 4.0 -75 -50 - 100 125 150 175 JUNCTION TEMPERATURE ( C) Figure 7. Short-Circuit Current vs. Temperature ...

Page 6

FAN1585A Applications Information General The FAN1585A and FAN1585A-1.5 are three-terminal regu- lators optimized for GTL+ V termination and logic appli- TT cations. These devices are short-circuit protected and offer thermal shutdown to turn off the regulator when the junction temperature ...

Page 7

PRODUCT SPECIFICATION FAN1585A V IN OUT ADJ REF ADJ R2/R1 (R2) OUT REF ADJ Figure 11. Basic Regulator Circuit Load Regulation It is not ...

Page 8

FAN1585A Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. This is the lowest resistance path for heat flow. Proper mounting ensures the best thermal flow from this area of ...

Page 9

PRODUCT SPECIFICATION Mechanical Dimensions 3-Lead TO-263 Package Inches Millimeters Symbol Min. Max. Min. A .160 .190 4.06 b .020 .036 0.51 b2 .049 .051 1.25 c2 .045 .055 1.14 D .340 .380 8.64 E .380 .405 9.65 e .100 BSC ...

Page 10

FAN1585A Mechanical Dimensions 3-Lead TO-263 Center Cut Package Inches Millimeters Symbol Min. Max. Min. A .160 .190 4.06 b .020 .036 0.51 b2 .049 .051 1.25 c2 .045 .055 1.14 D .340 .380 8.64 E .380 .405 9.65 e .100 ...

Page 11

PRODUCT SPECIFICATION Mechanical Dimensions 3-Lead TO-220 Package Inches Millimeters Symbol Min. Max. Min. A .140 .190 3.56 b .015 .040 .38 b1 .045 .070 1.14 c1 .014 .022 .36 øP .139 .161 3.53 D .560 .650 14.22 E .380 .420 ...

Page 12

FAN1585A Mechanical Dimensions 3-Lead TO-252 Package 6.73 6.35 5.46 5. (0.59) 0.89 0. SEE NOTE GAGE PLANE 0.61 0. 1.78 1.40 2.90 DETAIL A (ROTATED ...

Page 13

... TO-263 Center Cut in Tape and Reel FAN1585AT18 TO-220 FAN1585AD TO-252 FAN1585ADX TO-252 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 ...

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