LT1763CS8-2.5 datasheet(3/16 Pages) LINER

Part #	LT1763CS8-2.5

Description	500mA, Low Noise, LDO Micropower Regulators

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Manufacturer	LINER [Linear Technology]

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3

LT1763 Series

1763fa

Load Regulation

LT1763-3

VIN = 4V, ∆ILOAD = 1mA to 500mA

7

15

mV

VIN = 4V, ∆ILOAD = 1mA to 500mA

q

30

mV

LT1763-3.3

VIN = 4.3V, ∆ILOAD = 1mA to 500mA

7

17

mV

VIN = 4.3V, ∆ILOAD = 1mA to 500mA

q

33

mV

LT1763-5

VIN = 6V, ∆ILOAD = 1mA to 500mA

12

25

mV

VIN = 6V, ∆ILOAD = 1mA to 500mA

q

50

mV

LT1763 (Note 3)

VIN = 2.3V, ∆ILOAD = 1mA to 500mA

2

6

mV

VIN = 2.3V, ∆ILOAD = 1mA to 500mA

q

12

mV

Dropout Voltage

ILOAD = 10mA

0.13

0.19

V

VIN = VOUT(NOMINAL)

ILOAD = 10mA

q

0.25

V

(Notes 5, 6, 11)

ILOAD = 50mA

0.17

0.22

V

ILOAD = 50mA

q

0.32

V

ILOAD = 100mA

0.20

0.24

V

ILOAD = 100mA

q

0.34

V

ILOAD = 500mA

0.30

0.35

V

ILOAD = 500mA

q

0.45

V

GND Pin Current

ILOAD = 0mA

q

30

75

µA

VIN = VOUT(NOMINAL)

ILOAD = 1mA

q

65

120

µA

(Notes 5, 7)

ILOAD = 50mA

q

1.1

1.6

mA

ILOAD = 100mA

q

23

mA

ILOAD = 250mA

q

58

mA

ILOAD = 500mA

q

11

16

mA

Output Voltage Noise

COUT = 10µF, CBYP = 0.01µF, ILOAD = 500mA, BW = 10Hz to 100kHz

20

µVRMS

ADJ Pin Bias Current

(Notes 3, 8)

30

100

nA

Shutdown Threshold

VOUT = Off to On

q

0.8

2

V

VOUT = On to Off

q

0.25

0.65

V

SHDN Pin Current

VSHDN = 0V

0.1

µA

(Note 9)

VSHDN = 20V

1

µA

Quiescent Current in Shutdown

VIN = 6V, VSHDN = 0V

0.1

1

µA

Ripple Rejection

VIN – VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,

50

65

dB

ILOAD = 500mA

Current Limit

VIN = 7V, VOUT = 0V

700

mA

VIN = VOUT(NOMINAL) + 1V, ∆VOUT = – 0.1V

q

520

mA

Input Reverse Leakage Current

VIN = – 20V, VOUT = 0V

q

1mA

Reverse Output Current

LT1763-1.5

VOUT = 1.5V, VIN < 1.5V

10

20

µA

(Note 10)

LT1763-1.8

VOUT = 1.8V, VIN < 1.8V

10

20

µA

LT1763-2.5

VOUT = 2.5V, VIN < 2.5V

10

20

µA

LT1763-3

VOUT = 3V, VIN < 3V

10

20

µA

LT1763-3.3

VOUT = 3.3V, VIN < 3.3V

10

20

µA

LT1763-5

VOUT = 5V, VIN < 5V

10

20

µA

LT1763 (Note 3)

VOUT = 1.22V, VIN < 1.22V

5

10

µA

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. (Note 2)

all possible combinations of input voltage and output current. When

operating at maximum input voltage, the output current range must be

limited. When operating at maximum output current, the input voltage

range must be limited.

Note 5: To satisfy requirements for minimum input voltage, the LT1763

(adjustable version) is tested and specified for these conditions with an

external resistor divider (two 250k resistors) for an output voltage of

2.44V. The external resistor divider will add a 5

µA DC load on the output.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT1763 regulators are tested and specified under pulse load

conditions such that TJ ≈ TA. The LT1763 is 100% tested at TA = 25°C.

Performance at – 40

°C and 125°C is assured by design, characterization

and correlation with statistical process controls.

Note 3: The LT1763 (adjustable version) is tested and specified for these

conditions with the ADJ pin connected to the OUT pin.

Note 4: Operating conditions are limited by maximum junction

temperature. The regulated output voltage specification will not apply for

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