AAT2806 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

Input Power Supply

VIN

Operation Range

2.7

5.5

1X Mode, 3.0

≤ VIN ≤ 5.5, Active, No Load

0.3

Current; EN_FLSH = GND, EN/SET = VIN

1.5X Mode, 3.0

≤ VIN ≤ 5.5, Active, No Load

1.0

3.0

Current; EN_FLSH = GND, EN/SET = VIN

ICC

Operating Current

2X Mode, 3.0

≤ VIN ≤ 5.5, Active, No Load

2.0

3.7

Current; EN_FLSH = GND, EN/SET = VIN

EN_FLSH = GND, 50µA Output Setting,

µA

1X Mode

3.0

≤ VIN ≤ 5.5, No Load Current;

2.0

4.5

EN_FLSH = VIN, EN/SET = GND

ISHDN

Shutdown Current

EN_FLSH = EN/SET = 0

1.0

µA

IDX

Input Current Accuracy2, 3

ISET = 20mA and ISET = 4.1mA; TA = 25°C

-10

I(D-Match)

Current Matching Between Any VD1:D4 = 3.6V, VIN = 3.5V

0.5

Two Current Sink Inputs2, 4

RSINK

Sink Switch Impedance (each)2

3.0V < VIN < 5V, IOUT = 100mA;

4.32 4.5

4.68

VOUT_FL

Flash Charge Pump Output

EN_FLSH = VIN

Voltage5

3.0V < VIN < 5V, IOUT = 150mA;

4.3

4.5

4.7

EN_FLSH = VIN

IOUT_FL

Maximum Continuous IOUT5

VIN = 3.6V; VOUT = 4.5V; EN_FLSH = VIN

120

Maximum Pulsed IOUT5

VIN = 3.6V; VOUT = 4.5V; IPULSED < 500ms

250

TSS

Soft-Start Time

100

µs

FCLK

Clock Frequency

1.0

MHz

VEN(L)

Enable Threshold Low

0.4

VEN(H)

Enable Threshold High

1.4

TEN/SET LO

EN/SET Low Time

0.3

µs

TEN/SET_HI_MIN Minimum EN/SET High Time

TEN/SET_HI_MAX Maximum EN/SET High Time

µs

TOFF

EN/SET Off Timeout

500

µs

TLAT

EN/SET Latch Timeout

500

µs

Enable and EN/SET Input

-1.0

1.0

µA

Leakage

AAT2806

Dual High Efficiency Charge Pump

for White LED and Flash Applications

2806.2006.04.1.8

1. The AAT2806 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. Specification applies only to the tri-mode charge pump.

3. Determined by the average of all active channels.

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

5. Specification applies only to the charge pump doubler.

AAT2806 Datasheet(PDF) 4 Page - Advanced Analog Technology, Inc.

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