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AAT3151 датащи(PDF) 4 Page - Advanced Analog Technology, Inc.

номер детали AAT3151
подробное описание детали  High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications
PDF  15 Pages
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производитель  AAT [Advanced Analog Technology, Inc.]
домашняя страница  http://www.aatech.com.tw
Logo AAT - Advanced Analog Technology, Inc.

AAT3151 датащи(HTML) 4 Page - Advanced Analog Technology, Inc.

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AAT3151
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
4
3151.2007.03.1.10
Electrical Characteristics
1
C
IN = COUT = C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted.
Typical values are T
A = 25°C, VIN = 3.5V.
Symbol
Description
Conditions
Min
Typ
Max
Units
Input Power Supply
V
IN
Operation Range
2.7
5.5
V
1X Mode, 3.0
≤ V
IN ≤ 5.5, Active,
0.3
1
No Load Current
1.5X Mode, 3.0
≤ V
IN ≤ 5.5, Active,
1
3
mA
I
CC
Operating Current
No Load Current
2X Mode, 3.0
≤ V
IN ≤ 5.5, Active,
2.0
3.7
No Load Current
50µA Setting, 1X Mode
50
µA
I
SHDN
Shutdown Current
EN/SET = 0
1
µA
I
DX
I
SINK Current Accuracy
2
I
SET = 30mA, TA = 25°C
27
30
33
mA
I
(D-Match)
Current Matching Between Any
V
F:D1:D4 = 3.6V
0.5
%
Two Current Sink Inputs
3, 4
V
TH
1X to 1.5X or 1.5X to 2X Transition
I
SET = 20mA
150
mV
Threshold at Any I
SINK Pin
Charge Pump Section
T
SS
Soft-Start Time
100
µs
F
CLK
Clock Frequency
1000
kHz
EN/SET
V
IL
Enable Threshold Low
V
IN = 2.7V
0.4
V
V
IH
Enable Threshold High
V
IN = 5.5V
1.4
V
T
EN/SET LO
EN/SET Low Time
0.3
75
µs
T
EN/SET_HI_MIN
Minimum EN/SET High Time
50
ns
T
EN/SET_HI_MAX
Maximum EN/SET High Time
75
µs
T
OFF
EN/SET Off Timeout
5
500
µs
T
LAT
EN/SET Latch Timeout
6
500
µs
I
EN/SET
EN/SET Input Leakage
-1
1
µA
1. The AAT3151 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 at I
OUT = 20mA and 2mA.
4. Specification applies only to the tri-mode charge pump.
5. The EN/SET pin must remain logic low (less than V
IL) for the duration of longer than 500µs to guarantee the off timeout.
6. The EN/SET pin must remain logic high (greater than V
IH) for the duration of longer than 500µs to guarantee the latch timeout.



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