AAT3192_08 参数 Datasheet PDF下载

PRODUCT DATASHEET

AAT3192

ChargePump

TM

2-Channel Charge-Pump LED Driver

Electrical Characteristics

1

IN = EN = 3.6V; C

IN

= 1μF; C

OUT

= 1μF; C

CP

= 1μF; R

SET

= 14.3kΩ; T

A

=-40°C to 85°C unless otherwise noted. Typical

values are at T

A

= 25°C.

Symbol

Description

Conditions

Min

2.7

EN/SET or EN/PWM = IN; V

D1

= V

D2

= IN,

excluding I

D1

-I

D2

EN/SET or EN/PWM = IN; I

D1

= I

D2

= FS,

excluding I

D1

-I

D2

; V

IN

– V

F

= 1.5V

Operating, I

D1

= I

D2

= FS; D1 and D2 = OPEN

IN = 5.5V; EN/SET or EN/PWM = GND

100

0.9

115

150

18

1.0

1.0

20

±3

1.3

1.3

2.4

125

22

1.56

1.56

Typ

Max

5.5

2.5

2.5

7.0

1

Units

V

AAT3192-1/2/3/4 Input Power Supply

IN

Input Voltage Range

I

IN

Input Operating Current

mA

I

IN(SHDN)

Input Shutdown Current

Charge Pump Section

OUT Maximum Output Current

I

OUT

f

OSC

Charge Pump Oscillator Frequency

V

IN_(TH)

Charge Pump Mode Hysteresis

μA

mA

MHz

mV

μs

mA

%

mA

mA

mA

mV

0.65

I

D1

= I

D2

= 20mA; Excluding AAT3192-4,

PWM Option

EN/SET or EN/PWM = IN

DATA = 1; V

IN

- V

F

= 1.5V

DATA = 1; V

IN

- V

F

= 1.5V

DATA = 15; V

IN

- V

F

= 1.5V

DATA = 8; V

IN

- V

F

= 1.5V

DC = 10%; f

PWM

= 10kHz; V

IN

- V

F

= 1.5V

I

D1

= I

D2

= 20mA

1.15

250

t

OUT

Output Start-Up Time

AAT3192-1/-2/-4: LED Current Sink Outputs

I

D_(MAX)

D1 - D2 Current Accuracy

ΔI

D_(MAX)

D1 - D2 Current Matching

D1 - D2 Current Accuracy

I

D_(DATA15)

(AAT3192-1 only)

D1 - D2 Current Accuracy

I

D_(DATA8)

(AAT3192-2 only)

D1 - D2 Current Accuracy

I

D_(10%)

(AAT3192-4 only)

D1 - D2 Charge Pump Mode

V

D_(TH)

Transition Threshold

1. The AAT3192 is guaranteed to meet performance specification over the -40°C to 85°C operating temperature range and is assured by design, characterization and correlation

with statistical process controls.

4

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