AAT3120
3-Channel Charge Pump
For White LED Applications
Electrical Characteristics
1
C
IN
= C
OUT
= C
1
= C
2
= 1.0µF; T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C,
V
IN
= 3.5V.
Symbol
Description
Conditions
Min
2.7
3.0V
≤
V
IN
≤
5.5V, Active,
No Load Current
EN = 0
3.0
≤
V
IN
≤
5.5
VD1:D3 = 3.6, V
IN
= 3.5V
1.8
Typ
Max Units
5.5
3.0
1.0
22
V
mA
µA
mA
%
Input Power Supply
V
IN
Operation Range
I
CC
Operating Current
Shutdown Current
Output Current
I
(D-Match)
Current Matching Between
Any Two Outputs
Charge Pump Section
T
SS
Soft-Start Time
F
CLK
Clock Frequency
EN/SET
V
EN(L)
Enable Threshold Low
V
EN(H)
Enable Threshold High
T
EN/SET LO
EN/SET Low Time
T
EN/SET HI
Minimum EN/SET High Time
T
OFF
EN/SET Off Timeout
Input Current
EN/SET Input Leakage
I
SHDN
I
DX
18
20
0.5
200
1000
2.7V
≤
V
IN
≤
5.5V
2.7V
≤
V
IN
≤
5.5V
0.4
1.4
0.3
50
-1
500
1
75
µs
kHz
V
V
µs
ns
µs
µA
1. The AAT3120 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.
4
3120.2005.11.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
