PCA9450 datasheet(77/96 Pages) NXP

部品番号	PCA9450

部品情報	Power management IC for i.MX 8M application processor family

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NXP Semiconductors

PCA9450

Power management IC for i.MX 8M application processor family

PCA9450

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Product data sheet

Rev. 1.0 — 19 November 2019

77 / 96

13.10 LDO1

Table 82. LDO1

Unless otherwise specified, VSYS = 3.8 V, VINBx = 3.8 V, VINL1 = 3.8 V, VLDO1 = 1.8 V, CINL1 = 4.7 μF, COUT = 1 μF, Tamb=

-40 °C ~ +105 °C

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIN

Input voltage range

INL1 pin

2.85

5.5

V

IQ

Quiescent current

Regulator enabled, No load

2

μA

IOUT_MAX

Maximum Output DC

Current

VIN > 2.85 V, VLDO1 = 1.8 V

10

mA

ILIMIT

Short Current Limit

Output shorted to GND

30

60

mA

VDO

Dropout Voltage

IOUT = IOUT_MAX, VIN = 3.2 V,

L1_OUT[2:0]= 0x7, 3.3 V

35

60

mV

Nominal output voltage I2C Programmable, 100 mV step 1.6

3.3

V

Default voltage

1.8

V

VLDO1

DC accuracy

VLDO1 = 1.8 V, ILoad = 5 mA

-3

3

%

VNOISE[1]

Output noise

f = 10 Hz to 10 kHz, IOUT = 10 %

of IMAX, VLDO1 = 1.8 V

400

μV

ΔVOUT(ΔVINL)

DC Line regulation

VLDO1 +0.3 V < VIN < 5.5 V,

IOUT(LDO1) = 10 % of IOUT_MAX

0.2

0.5

%/V

ΔVOUT(ΔIOUT)

DC Load regulation

VIN = VLDO1 +0.3 V to 5.5 V,

0 mA < IOUT < IOUT_MAX

0.5

1

%

ΔVOUT(ΔVINL)[1] Transient Line

Response

VLDO1 +0.3 V < VIN < 5.5 V,

IOUT(LDO1) = 10 % of IOUT_MAX, tr =

10 μs

0.5

%/V

ΔVOUT(ΔIOUT)[1] Transient Load

Response

VIN = VLDO1 +0.3 V to 5.5 V,

1 mA < IOUT < IOUT_MAX , tr =

10 μs, VLDO1 = 1.8 V

-3

3

%

PSRR[1]

Power Supply Rejection

ratio

f = 10 Hz to 10 kHz, IOUT = 10 %

of IOUT_MAX

45

dB

Vsoft_strup[1]

Soft-start slew rate

IOUT = 0 mA, 10 % to 90 % of

VLDO1

15

mV/μs

Vov_srtup[1]

Overshoot at startup

IOUT = 0 mA

10

mV

tEN[1]

Enable time

EN rising to 90 % of output

voltage

150

μs

POK

Output Power good

Percentage of VLDO1 configuration 75

85

92

%

RDIS

Active Discharge

Resistance

100

150

Ω

COUT[1]

Output capacitance

Minimum nominal capacitance

1

μF

[1]

Guaranteed by design

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