AAT2847IML-EE-T1 参数 Datasheet PDF下载

AAT2847

Four-Channel Backlight Driver with Dual LDOs

Electrical Characteristics

1

V

IN

= 3.6V; C

IN

= C

LDOA

= C

LDOB

= 2.2µF; C

OUT

= 1µF; C1 = C2 = 1µF; T

A

= 25°C, unless otherwise noted.

Typical values are at T

A

= 25°C.

Symbol

Description

Conditions

V

ENA

= V

ENB

= V

IN

, V

EN/SET

= 0V, No Load

V

ENA

= V

IN

; V

ENB

= 0V; V

EN/SET

= 0V; No Load

I

LDO[A/B]

= 1mA to 200mA

I

LDO[A/B]

= 150mA

V

IN

= (V

LDO[A/B]

+ 1V) to 5V

1.17

Min

Typ

80

60

1.2

150

0.09

50

Max Units

150

112

1.23

300

LDOs: AAT2847-EE

I

IN

V

FBA

, V

FBB

V

DO

ΔV

OUT

/

V

OUT

*ΔV

IN

PSRR

IN Operating Current

Feedback Voltage

Dropout Voltage

Line Regulation

µA

V

mV

%/V

dB

Power Supply Rejection

I

LDO[A/B]

=10mA, 1kHz

Ratio

V

ENA

= V

ENB

= V

IN

, V

EN/SET

= 0V, No Load

2.716

1.455

LDOs: AAT2847-QG

I

IN

LDOA

LDOB

V

DO

IN Operating Current

80

60

2.8

1.5

150

0.09

50

150

112

2.884

1.545

300

V

ENA

= V

IN

; V

ENB

= 0V; V

EN/SET

= 0V; No Load

LDOA Voltage Tolerance I

LDOA

= 1mA to 150mA

LDOB Voltage Tolerance I

LDOB

= 1mA to 150mA

LDOA Dropout Voltage

2

µA

V

V

mV

%/V

dB

I

LDOA

= 150mA

V

IN

= (LDOA + 1V) to 5V; V

IN

= (LDOB + 1.2V)

to 5V

I

LDO[A/B]

=10mA, 1kHz

ΔV

LDO[A/B]

/

LDOA, LDOB Line

V

LDO[A/B]

*ΔV

IN

Regulation

PSRR

LDOA, LDOB Power

Supply Rejection Ratio

LDOs: AAT2847-QI

I

IN

LDOA

LDOB

V

DO

IN Operating Current

V

ENA

= V

ENB

= V

IN

, V

EN/SET

= 0V, No Load

V

ENA

= V

IN

; V

ENB

= 0V; V

EN/SET

= 0V; No Load

2.716

1.746

80

60

2.8

1.8

150

0.09

50

150

112

2.884

1.854

300

µA

V

V

mV

%/V

dB

LDOA Voltage Tolerance I

LDOA

= 1mA to 150mA

LDOB Voltage Tolerance I

LDOB

= 1mA to 150mA

LDOA Dropout Voltage

2

I

LDOA

= 150mA

V

IN

= (LDO[A/B] + 1V) to 5V

I

LDO[A/B]

=10mA, 1kHz

ΔV

LDO[A/B]

/

LDOA, LDOB Line

V

LDO[A/B

]*ΔV

IN

Regulation

PSRR

LDOA, LDOB Power

Supply Rejection Ratio

ENA, ENB Input Logic

Low Threshold Voltage

ENA, ENB Input Logic

High Threshold Voltage

ENA, ENB Input

Leakage

LDO Logic Control – All Options

V

IL(ENA)

,

V

IL(ENB)

V

IH(ENA)

,

V

IH(ENB)

I

EN[A/B]

0.4

1.4

V

EN[A/B]

= V

IN

= 5V

-1

1

V

V

µA

1. The AAT2847 is guaranteed to meet performance specifications over the –40˚C to +85°C operating temperature range is assured by

design, characterization and correlation with statistical process controls.

2. V

DO

is defined as V

IN

- LDOA when LDOA is 98% of nominal.

2847.2007.09.1.0

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