AAT3129
High Efficiency 1X/1.5X/2X Charge Pump
for RGB Color LED Applications
Electrical Characteristics
1
V
IN
= 3.5V, C
IN
= C
CP
= C1 = C2 = 1µF; T
A
= -40°C to +85°C. Unless otherwise noted, typical values are T
A
= 25°C.
Symbol
Description
Conditions
Min
2.7
3.0
≤
V
IN
≤
5.5, CP = 1.5X,
No Load Current
EN = 0
3.0
≤
V
IN
≤
5.5
1
Typ
Max
5.5
3
1
5
Units
V
mA
µA
%
µs
MHz
%
Input Power Supply
V
IN
Operation Range
I
CC
Operating Current
I
SHDN
I
SRC
Charge Pump
T
S
F
CLK
η
Switches
R
DS(ON)
EN/SET
V
EN(L)
V
EN(H)
T
EN/SET LO
T
EN/SET HI MIN
T
OFF
T
LAT
I
EN/SET
Shutdown Current
Output Current Accuracy
Start-Up Delay Time
Clock Frequency
Efficiency
Switch On Resistance
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
Minimum EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
-5
200
1
93
V
IN
= 3.5V
V
IN
= 3.5V, T
A
= 25°C
V
IN
= 2.7V
V
IN
= 5.5V
1.5
0.4
1.4
0.3
50
500
500
1
75
Ω
V
V
µs
ns
µs
µs
µA
V
EN/SET
= 5.5V, V
IN
= 5.5V
-1
1. The AAT3129 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
3129.2005.11.1.3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
