ADP151_VD datasheet(4/24 Pages) AD

Part #	ADP151_VD

Description	Ultralow Noise, 200 mA, CMOS Linear Regulator

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ADP151

Rev. D | Page 4 of 24

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

START-UP TIME3

t

START-UP

V

OUT = 3.3 V

180

µs

CURRENT-LIMIT THRESHOLD4

I

LIMIT

T

J = 0°C to +125°C

220

300

400

mA

UNDERVOLTAGE LOCKOUT

T

J = −40°C to +125°C

Input Voltage Rising

UVLO

RISE

1.96

V

Input Voltage Falling

UVLO

FALL

1.28

V

Hysteresis

UVLO

HYS

120

mV

THERMAL SHUTDOWN

Thermal Shutdown Threshold

TS

SD

T

J rising

150

°C

Thermal Shutdown Hysteresis

TS

SD-HYS

15

°C

EN INPUT

EN Input Logic High

V

IH

2.2 V ≤ V

IN ≤ 5.5 V

1.2

V

EN Input Logic Low

V

IL

2.2 V ≤ V

IN ≤ 5.5 V

0.4

V

EN Input Pull-Down Resistance

R

EN

V

IN = VEN = 5.5 V

2.6

MΩ

OUTPUT NOISE

OUT

NOISE

10 Hz to 100 kHz, V

IN = 5 V, VOUT = 3.3 V

9

µV rms

10 Hz to 100 kHz, V

IN = 5 V, VOUT = 2.5 V

9

µV rms

10 Hz to 100 kHz, V

IN = 5 V, VOUT = 1.1 V

9

µV rms

POWER SUPPLY REJECTION RATIO

PSRR

V

IN = VOUT + 0.5 V

10 kHz, V

IN = 3.8 V, VOUT = 3.3 V, IOUT = 10 mA

70

dB

100 kHz, V

IN = 3.8 V, VOUT = 3.3 V, IOUT = 10 mA

55

dB

V

IN = VOUT + 1 V

10 kHz, V

IN = 4.3 V, VOUT = 3.3 V, IOUT = 10 mA

70

dB

100 kHz, V

IN = 4.3 V, VOUT = 3.3 V, IOUT = 10 mA

55

dB

10 kHz, V

IN = 2.2 V, VOUT = 1.1 V, IOUT = 10 mA

70

dB

100 kHz, V

IN = 2.2 V, VOUT = 1.1 V, IOUT = 10 mA

55

dB

1 Based on an end-point calculation using 0.1 mA and 200 mA loads. See Figure 8 for typical load regulation performance for loads less than 1 mA.

2 Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage. This applies only for output

voltages above 2.2 V.

3 Start-up time is defined as the time between the rising edge of EN and V

OUT being at 90% of its nominal value.

4 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V

output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V (that is, 2.7 V).

INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS

Table 2.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Minimum Input and Output

Capacitance1

C

MIN

T

A = −40°C to +125°C

0.7

µF

Capacitor ESR

R

ESR

T

A = −40°C to +125°C

0.001

0.2

Ω

1 The minimum input and output capacitance should be greater than 0.7 μF over the fullrange of operating conditions. The full range of operating conditions in the

application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended;

Y5V and Z5U capacitors are not recommended for use with any LDO.

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