MIC5254(2003) 查看數據表（PDF） - Micrel

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MIC5254
(Rev.:2003)

Dual 150mA µCap LDO with Error Flag Outputs

Micrel 

MIC5254

Typical Characteristics

For each LDO Channel.

Short Circuit Current

600

500

400

300

200

100

03 3.5 4 4.5 5 5.5 6

INPUT VOLTAGE (V)

Short Circuit Current

500

490 VIN = VOUT + 1V

480

470

460

450

440

430

420

410

40-040 -20 0 20 40 60 80 100120140

TEMPERATURE (°C)

Micrel

Output Voltage vs.

Temperature

3.40

3.38

3.36

3.34

3.32

3.30

3.28

3.26

3.24

3.22

I

LOAD

=

100µA

3.2-040 -20 0 20 40 60 80 100 120

TEMPERATURE (°C)

Test Circuit

Enable Threshold

vs. Temperature

1.3

1.25

1.2

1.15

1.1

1.05

1

0.95

0.9

0.85

I

LOAD

=

100µA

0.-840 -20 0 20 40 60 80 100120140

TEMPERATURE (°C)

Error Flag Pull-Up Resistor

4.5

Power Good

4

3.5

3

2.5

2

1.5

VIN = 4V

1

0.5

00.1

Power Fail

1 10 100 1000 10000

RESISTANCE (kΩ)

VINA

1µF

VINB

1µF

MIC5254

9

10

VINA OUTA

2 ENA FLGA 1

3 GNDA OUTB 8

6 VINB FLGB 4

5 ENB GNDB 7

47kΩ

FLAGA

0.01µF

47kΩ

FLAGB

0.01µF

VOUTA

1µF

Ceramic

VOUTB

1µF

Ceramic

MIC5254

6

September 2003

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