1461B4 データシートの表示（PDF） - Linear Technology

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1461B4

Micropower Precision Low Dropout Series Voltage Reference Family

Linear Technology 

LT1461

ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the specified temperature

range, otherwise specifications are at TA = 25°C. VIN – VOUT = 0.5V, Pin 3 = 2.4V, CL = 2µF, unless otherwise specified.

PARAMETER

CONDITIONS

MIN TYP

Output Voltage (Note 4)

LT1461ACS8/LT1461AIS8

LT1461BCS8/LT1461BIS8

LT1461CCS8/LT1461CIS8

LT1461DHS8

– 0.04

– 0.06

– 0.08

– 0.15

Output Voltage Temperature Coefficient (Note 5)

LT1461ACS8/LT1461AIS8

q

1

LT1461BCS8/LT1461BIS8

q

3

LT1461CCS8/LT1461CIS8

q

5

LT1461DHS8

q

7

Line Regulation

(VOUT + 0.5V) ≤ VIN ≤ 20V

2

q

LT1461DHS8

q

15

Load Regulation Sourcing (Note 6)

VIN = VOUT + 2.5V

0 ≤ IOUT ≤ 50mA

12

q

Dropout Voltage

Output Current

Shutdown Pin

LT1461DHS8, 0 ≤ IOUT ≤ 10mA

q

VIN – VOUT, VOUT Error = 0.1%

IOUT = 0mA

0.06

IOUT = 1mA

q

0.13

IOUT = 10mA

q

0.20

IOUT = 50mA, I and C Grades Only q

1.50

Short VOUT to GND

100

Logic High Input Voltage

q 2.4

Logic High Input Current, Pin 3 = 2.4V q

2

Logic Low Input Voltage

q

Logic Low Input Current, Pin 3 = 0.8V q

0.5

Supply Current

No Load

35

q

Shutdown Current

RL = 1k

25

q

Output Voltage Noise (Note 7)

0.1Hz ≤ f ≤ 10Hz

8

10Hz ≤ f ≤ 1kHz

9.6

Long-Term Drift of Output Voltage, SO-8 Package (Note 8) See Applications Information

60

Thermal Hysteresis (Note 9)

∆T = 0°C to 70°C

40

∆T = – 40°C to 85°C

75

∆T = – 40°C to 125°C

120

MAX

UNITS

0.04

%

0.06

%

0.08

%

0.15

%

3

ppm/°C

7

ppm/°C

12

ppm/°C

20

ppm/°C

8

ppm/V

12

ppm/V

50

ppm/V

30

ppm/mA

40

ppm/mA

50

ppm/mA

V

0.3

V

0.4

V

2.0

V

mA

V

15

µA

0.8

V

4

µA

50

µA

70

µA

35

µA

55

µA

ppmP-P

ppmRMS

ppm/√kHr

ppm

ppm

ppm

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

of a device may be impaired.

Note 2: The LT1461 is guaranteed functional over the operating

temperature range of – 40°C to 125°C.

Note 3: If the part is stored outside of the specified temperature range, or

the junction temperature exceeds the specified temperature range, the

output may shift due to hysteresis.

Note 4: ESD (Electrostatic Discharge) sensitive device. Extensive use of

ESD protection devices are used internal to the LT1461, however, high

electrostatic discharge can damage or degrade the device. Use proper ESD

handling precautions.

Note 5: Temperature coefficient is calculated from the minimum and

maximum output voltage measured at TMIN, Room and TMAX as follows:

TC = (VOMAX – VOMIN)/(TMAX – TMIN)

Incremental slope is also measured at 25°C.

Note 6: Load regulation is measured on a pulse basis from no load to the

specified load current. Output changes due to die temperature change

must be taken into account separately.

Note 7: Peak-to-peak noise is measured with a single pole highpass filter

at 0.1Hz and a 2-pole lowpass filter at 10Hz. The unit is enclosed in a still-

air environment to eliminate thermocouple effects on the leads. The test

time is 10 seconds. RMS noise is measured with a single pole highpass

filter at 10Hz and a 2-pole lowpass filter at 1kHz. The resulting output is

full-wave rectified and then integrated for a fixed period, making the final

reading an average as opposed to RMS. A correction factor of 1.1 is used

to convert from average to RMS and a second correction of 0.88 is used to

correct for the nonideal bandpass of the filters.

3

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