LT1580-2.5 datasheet(3/16 Pages) LINER

Part #	LT1580-2.5

Description	7A, Very Low Dropout Regulator

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Manufacturer	LINER [Linear Technology]

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3

LT1580/LT1580-2.5

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Load Regulation: LT1580-2.5

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 0mA to 7A

q

15

mV

LT1580 (VADJ = 0V)

VCONTROL = 2.75V, VPOWER = 2.1V, ILOAD = 10mA to 7A

q

15

mV

Minimum Load Current: LT1580

VCONTROL = 5V, VPOWER = 3.3V, VADJ = 0V (Note 3)

q

510

mA

Control Pin Current: LT1580-2.5

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 100mA, 0°C ≤ TJ ≤ 125°C6

10

mA

(Note 4)

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 100mA, – 40°C ≤ TJ < 0°C12

mA

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 4A, 0°C ≤ TJ ≤ 125°C30

60

mA

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 4A, – 40°C ≤ TJ < 0°C70

mA

VCONTROL = 5V, VPOWER = 3V, ILOAD = 4A, 0°C ≤ TJ ≤ 125°C33

70

mA

VCONTROL = 5V, VPOWER = 3V, ILOAD = 4A, – 40°C ≤ TJ < 0°C80

mA

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 7A, 0°C ≤ TJ ≤ 125°C

60

120

mA

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 6.5A, – 40°C ≤ TJ < 0°C

130

mA

Control Pin Current: LT1580

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 100mA, 0°C ≤ TJ ≤ 125°C6

10

mA

(Note 4)

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 100mA, – 40°C ≤ TJ < 0°C12

mA

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 4A, 0°C ≤ TJ ≤ 125°C30

60

mA

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 4A, – 40°C ≤ TJ < 0°C70

mA

VCONTROL = 2.75V, VPOWER = 1.75V, ILOAD = 4A, 0°C ≤ TJ ≤ 125°C33

70

mA

VCONTROL = 2.75V, VPOWER = 1.75V, ILOAD = 4A, – 40°C ≤ TJ < 0°C80

mA

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 7A, 0°C ≤ TJ ≤ 125°C

60

120

mA

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 6.5A, – 40°C ≤ TJ < 0°C

130

mA

Ground Pin Current: LT1580-2.5

VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 0mA

q

610

mA

ADJ Pin Current: LT1580 (VADJ = 0V)

VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 10mA

q

50

120

µA

Current Limit: LT1580-2.5

VCONTROL = 5V, VPOWER = 3.3V, ∆VOUT = 100mV, 0°C ≤ TJ ≤ 125°C

7.1

8

A

VCONTROL = 5V, VPOWER = 3.3V, ∆VOUT = 100mV, – 40°C ≤ TJ < 0°C

6.6

A

LT1580 (VADJ = 0V)

VCONTROL = 2.75V, VPOWER = 2.05V, ∆VOUT = 100mV, 0°C ≤ TJ ≤ 125°C

7.1

8

A

VCONTROL = 2.75V, VPOWER = 2.05V, ∆VOUT = 100mV, – 40°C ≤ TJ < 0°C

6.6

A

Ripple Rejection: LT1580-2.5

VC = VP = 5V Avg, VRIPPLE = 1VP-P, IOUT = 4A, TJ = 25°C60

80

dB

LT1580

VC = VP = 3.75V Avg, VRIPPLE = 1VP-P, VADJ = 0V, IOUT = 4A, TJ = 25°C60

80

dB

Thermal Regulation

30ms Pulse

0.002

0.020

%/W

Thermal Resistance, Junction-to-Case T, T7 Packages, Control Circuitry/Power Transistor

0.65/2.70

°C/W

Dropout Voltage (Note 2)

Minimum VCONTROL: LT1580-2.5

VPOWER = 3.3V, ILOAD = 100mA, 0°C ≤ TJ ≤ 125°C

1.00

1.15

V

(VCONTROL – VOUT)VPOWER = 3.3V, ILOAD = 100mA, – 40°C ≤ TJ < 0°C

1.20

V

VPOWER = 3.3V, ILOAD = 1A, 0°C ≤ TJ ≤ 125°C

1.00

1.15

V

VPOWER = 3.3V, ILOAD = 1A, – 40°C ≤ TJ < 0°C

1.20

V

VPOWER = 3.3V, ILOAD = 4A, 0°C ≤ TJ ≤ 125°C

1.06

1.20

V

VPOWER = 3.3V, ILOAD = 4A, – 40°C ≤ TJ < 0°C

1.25

V

VPOWER = 3.3V, ILOAD = 7A, 0°C ≤ TJ ≤ 125°C

1.15

1.30

V

VPOWER = 3.3V, ILOAD = 6.5A, – 40°C ≤ TJ < 0°C

1.35

V

Minimum VCONTROL: LT1580

VPOWER = 2.05V, ILOAD = 100mA, 0°C ≤ TJ ≤ 125°C

1.00

1.15

V

(VCONTROL – VOUT)VPOWER = 2.05V, ILOAD = 100mA, – 40°C ≤ TJ < 0°C

1.20

V

(VADJ = 0V)

VPOWER = 2.05V, ILOAD = 1A, 0°C ≤ TJ ≤ 125°C

1.00

1.15

V

VPOWER = 2.05V, ILOAD = 1A, – 40°C ≤ TJ < 0°C

1.20

V

VPOWER = 2.05V, ILOAD = 2.75A, 0°C ≤ TJ ≤ 125°C

1.05

1.18

V

VPOWER = 2.05V, ILOAD = 2.75A, – 40°C ≤ TJ < 0°C

1.23

V

VPOWER = 2.05V, ILOAD = 4A, 0°C ≤ TJ ≤ 125°C

1.06

1.20

V

VPOWER = 2.05V, ILOAD = 4A, – 40°C ≤ TJ < 0°C

1.25

V

VPOWER = 2.05V, ILOAD = 7A, 0°C ≤ TJ ≤ 125°C

1.15

1.30

V

VPOWER = 2.05V, ILOAD = 6.5A, – 40°C ≤ TJ < 0°C

1.35

V

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