Electrical Characteristics

1

V

Typical values are at T

Symbol

Description

Conditions

Min Typ Max Units

Input Power Supply

V

IN

Operation Range

2.7

5.5

V

1X Mode, 3.0

≤ V

0.3

1

Current; EN_FLSH = GND, EN/SET = V

IN

1.5X Mode, 3.0

≤ V

1.0

3.0

Current; EN_FLSH = GND, EN/SET = V

IN

mA

I

CC

Operating Current

2X Mode, 3.0

≤ V

2.0

3.7

Current; EN_FLSH = GND, EN/SET = V

IN

EN_FLSH = GND, 50µA Output Setting,

50

µA

1X Mode

3.0

≤ V

2.0

4.5

mA

EN_FLSH = V

I

SHDN

Shutdown Current

EN_FLSH = EN/SET = 0

1.0

µA

I

DX

Input Current Accuracy

2, 4

I

-10

10

%

I

(D-Match)

Current Matching Between Any

VD1:D4 = 3.6, V

0.5

%

Two Current Sink Inputs

2, 5

R

SINK

Sink Switch Impedance (each)

2

7

Ω

3.0V < V

4.32

4.5

4.68

V

OUT_FL

Flash Charge Pump Output

EN_FLSH = V

IN

V

Voltage

3.0V < V

4.3

4.5

4.7

EN_FLSH = V

IN

I

OUT_FL

Maximum Continuous I

OUT

V

120

mA

Maximum Pulsed I

OUT

V

250

T

SS

Soft-Start Time

100

µs

F

CLK

Clock Frequency

1.0

MHz

V

EN(L)

Enable Threshold Low

0.4

V

V

EN(H)

Enable Threshold High

1.4

V

T

EN/SET LO

EN/SET Low Time

0.3

75

µs

T

EN/SET HI

Minimum EN/SET High Time

50

ns

T

OFF

EN/SET Off Timeout

500

µs

T

LAT

EN/SET Latch Timeout

500

µs

I

I

Enable and EN/SET Input

-1.0

1.0

µA

Leakage

AAT2806

Dual High Efficiency Charge Pump

for White LED and Flash Applications

4

2806.2005.07.1.4

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. Specification applies only to the charge pump doubler.

4. Determined by the sum of all active channels

5. Current matching is defined as the deviation of any sink current at I