PRODUCT DATASHEET
AAT3159
ChargePump
TM
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
Electrical Characteristics
1
V
IN
= 3.6V; C
IN
= C
OUT
= C1 = C2 = 1.0μF; T
A
= -40°C to +85°C, unless otherwise noted.
T
A
= 25°C.
Symbol
Description
Conditions
Min
2.7
1X Mode, 3.0
≤
V
IN
≤
5.5, Active, No Load Current
1.5X Mode, 3.0
≤
V
IN
≤
5.5, Active, No Load Current
2X Mode, 3.0
≤
V
IN
≤
5.5, Active, No Load Current
50μA Setting, 1X Mode
EN/SET = 0
T
A
= -40°C to +85°C, R
SET
= 26.1kΩ, Data = 1
(100%)
V
F
:D1:D4 = 3.6V
0.3
1
1
50
18
20
0.5
150
I
SINK
/I
RSET
870
0.6
100
1000
V
IN
= 2.7V
V
IN
= 5.5V
0.4
1.4
0.3
50
75
500
500
1
75
Typical values are
Typ
Max
5.5
1
3
Units
V
mA
μA
μA
mA
%
mV
A/A
V
μs
kHz
V
V
μs
ns
μs
μs
μs
μA
Input Power Supply
V
IN
Input Supply Voltage Range
I
CC
I
SHDN
I
DX
I
(D-Match)
Operating Input Current
Shutdown Current
DX Pin Current
1
22
1
Current Matching
2
1X to 1.5X or 1.5X to 2X Tran-
V
TH
sition Threshold at Any DX Pin
I
SET
Current Set Ratio
V
SET
SET Pin Voltage
Charge Pump Section
T
SS
Soft-Start Time
F
CLK
Clock Frequency
EN/SET Logic Control
V
IL(EN/SET)
Enable Logic Low Threshold
V
IH(EN/SET)
Enable Logic High Threshold
EN/SET Low Time
T
EN/SET LO
T
EN/SET HI MIN
Minimum EN/SET High Time
T
EN/SET HI MAX
Maximum EN/SET High Time
T
OFF
EN/SET Off Timeout
T
LAT
EN/SET Latch Timeout
I
EN/SET
EN/SET Input Leakage
-1
1. The AAT3159 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
2. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
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