FAN1581 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

FAN1581

5A Adjustable/Fixed Ultra Low Dropout Linear Regulator

Fairchild Semiconductor 

PRODUCT SPECIFICATION

FAN1581

Absolute Maximum Ratings

Parameter

VIN

VCNTL

Operating Junction Temperature Range

Lead Temperature (Soldering, 10 sec.)

Storage Temperature Range

Min.

Max.

Unit

7

V

13.2

V

0

125

°C

300

°C

-65

150

°C

Electrical Characteristics

TJ=25°C, VOUT = VSENSE, VADJ = 0V unless otherwise specified.

The • denotes specifications which apply over the specified operating temperature range.

Parameter

Reference Voltage3

Adjustable Output Voltage

Output Voltage4

Output Voltage5

Output Voltage6

Line Regulation1,2

Load Regulation1,2

Dropout Voltage Minimum

(VCNTL–VOUT)

Dropout Voltage Minimum

(VIN–VOUT)

Dropout Voltage Minimum VIN

Current Limit

Control Pin Current

Adjust Pin Current3

Minimum Load Current

Ripple Rejection

Thermal Resistance, Junction to

Case

Thermal Regulation

Thermal Shutdown

Conditions

Min. Typ. Max. Units

2.05V ≤ VIN ≤ 5.5V,

2.7V ≤ VCNTL ≤ 12V,

10mA ≤ IOUT ≤ 5A

• 1.237 1.250 1.263 V

3V ≤ VIN ≤ 7V (function of Vout),

10mA ≤ IOUT ≤ 5A

• Vref 1.5 5.7 V

3V ≤ VIN ≤ 7V, 10mA ≤ IOUT ≤ 5A

• 1.47 1.5 1.53 V

4V ≤ VIN ≤ 7V, 10mA ≤ IOUT ≤ 5A

• 2.474 2.5 2.526 V

2.7V ≤ VIN ≤ 7V, 10mA ≤ IOUT ≤ 5A

• 1.176 1.200 1.224 V

1.75V ≤ VIN ≤ 5.5V, 2.5V ≤ VCNTL ≤ 12V, •

IOUT = 10mA

1

3

mV

VIN = 2.1V, VCNTL = 2.75V,

10mA ≤ IOUT ≤ 5A

•

1

5

mV

VIN = 2.05V, ∆VREF = 1%, IOUT = 5A •

1.05 1.18 V

VCNTL = 2.75V, ∆VREF = 1%,

0.4 0.5 V

IOUT = 5A

VCNTL = 2.75V, ∆VREF = 1%,

•

0.5 0.6 V

IOUT = 5A

VIN = 2.05V, VCNTL = 2.75V

• 5.2

A

VIN = 2.05V, VCNTL = 2.75V,

•

3

6

mA

IOUT = 10mA

VIN = 2.05V, VCNTL = 2.75V

•

50 120 µA

VIN = 3.3V, VCNTL = 5V

•

5.0 10 mA

VIN = 3.75V, VCNTL = 3.75V, f = 120Hz,

60 80

dB

COUT = 22µF Tantalum, IOUT = 2.5A

TO-263

SPAK

3

°C/W

2

TA = 25°C, 30ms pulse

0.002 0.02 %/W

150

°C

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. FAN1581 only.

4. FAN1581-1.5 only.

5. FAN1581-2.5 only.

6. FAN1581-1.2 only.

REV. 1.2.0 11/6/03

3

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