MAX1983(2002) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1983
(Rev.:2002)

Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply

Maxim Integrated 

Low-Voltage, Low-Dropout Linear Regulators

with External Bias Supply

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 3, VIN = 1.8V, VOUT = 1.2V, ILOAD = 1mA, CLOAD = 10µF, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX UNITS

MAX1983 0.80V

Output Voltage Accuracy

Dropout Voltage

Current Limit

PGOOD COMPARATOR

Comparator Threshold

VOUT

VDO

ILIM

IOUT = 1mA to 300mA,

VOUT + 0.5V < VIN < 5.5V

ILOAD = 300mA

ILOAD = 150mA

VIN - VOUT = 1.3V

% of regulated output voltage

-3

330

-12.5

+3

%

350

mV

175

1400

mA

-6

%

LOGIC AND I/O

SHDN Input High Voltage

VIH

SHDN Input Low Voltage

VIL

SHDN Input Current

2.4

V

0.8

V

-1

+1

µA

PGOOD Output Low Voltage

PGOOD sinking 1mA

0.1

V

PGOOD Output High Leakage

Current

0 < VPGOOD < VIN

-1

+1

µA

DYNAMICS

PGOOD Propagation Delay

tPD

Rising edge within 5% of regulation level

1

Note 1: Specifications over temperature are guaranteed by design, not production tested.

Note 2: VOUT is 1.2V for MAX1982. For MAX1983 VOUT is set to 1.2V with circuit of Figure 4.

4

ms

(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics

BIAS INPUT CURRENT

INPUT CURRENT vs. INPUT VOLTAGE

vs. INPUT VOLTAGE

30

150

GROUND CURRENT vs. OUTPUT CURRENT

175

29

28

27

26

VBIAS = 5V

25

1.5

2.5

3.5

4.5

5.5

INPUT VOLTAGE (V)

145

140

135

VBIAS = 5V

130

1.5

2.5

3.5

4.5

5.5

INPUT VOLTAGE (V)

170

165

160

VBIAS = 5V

VIN = 1.8V

155

0 50 100 150 200 250 300

OUTPUT CURRENT (mA)

4 _______________________________________________________________________________________

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