AAT2803 datasheet(4/16 Pages) AAT

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Electrical Characteristics1

VIN = 3.6V, CIN = COUT = C1 = C2 = C3 = 1.0μF; TA = -40°C to +85°C, unless otherwise noted.

Typical values are TA = 25°C.

Symbol

Description

Conditions

Min

Typ Max Units

VIN

Operation Range

2.7

5.5

1X Mode, 3.0

≤ VIN ≤ 5.5, Active,

0.3

No Load Current; EN/SET = VIN;

EN_FL= GND

1.5X Mode, 3.0

≤ VIN ≤ 5.5, Active,

1.0

3.0

No Load Current; EN/SET = VIN;

EN_FL= GND

ICC

Operating Current

2X Mode, 3.0

≤ VIN ≤ 5.5, Active,

2.0

3.7

No Load Current; EN/SET = VIN;

EN_FL = GND

VOUT_FLASH = 5V; EN/SET = GND;

2.0

4.5

EN_FL = VIN

50μA Setting, 1X Mode; EN/SET

μA

= VIN; EN_FL = GND

ISHDN

Shutdown Current

EN/SET = 0

1.0

μA

IDX

ISINK Average Current Accuracy2

ISET = 30mA, TA = 25°C

ISET = 4.1mA, TA = 25°C

3.69

4.1

4.51

I(D-Match)

Current Matching Between Any

VF:D1:D4 = 3.6V

0.5

Two Current Sink Inputs3, 4

VTH

1X to 1.5X or 1.5X to 2X Transition

150

Threshold at Any DX Pin

VOUT

Output Voltage (Flash Charge

3.0< VIN < 5V, IOUT = 120mA;

4.3

4.5

4.7

Pump)5

EN_FL = VIN

Max Continuous Output Current

VIN = 3.3V; VOUT = 4.5V;

120

IOUT

(Flash Charge Pump)5

EN_FL = VIN

Max Pulsed Output Current5

VIN = 3.6V; VOUT = 4.5V;

300

IPULSED = 250ms

TSS

Soft-Start Time

Backlight Charge Pump

100

μs

Flash Charge Pump

200

FCLK

Clock Frequency

1.0

MHz

VEN(L)

Enable Threshold Low

VIN = 2.7V

0.4

VEN(H)

Enable Threshold High

VIN = 5.5V

1.4

AAT2803

Six-Channel White LED Backlight

Charge Pump with Flash

2803.2006.12.1.6

1. The AAT2803 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured

by design, characterization, and correlation with statistical process controls.

2. Determined by the average of all active channels.

3. Current matching is defined as the deviation of any sink current from the average of all active channels.

4. Specification applies only to the tri-mode charge pump.

5. Specification applies only to the charge pump doubler.

AAT2803 Datasheet(PDF) 4 Page - Advanced Analog Technology, Inc.

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