High Efficiency 1.5X Fractional Charge
Pump For White LED Applications
Electrical Characteristics
V
IN
= 3.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C.
Symbol
Description
Conditions
Min Typ Max Units
2.7
Active, No Load Current
EN = 0V
3.0V
≤
V
IN
≤
5.5V, T
A
= 25°C, All Outputs Max Current
3.0V
≤
V
IN
≤
5.5V
VD1:Dn = 3.6V, V
IN
= 3.3V
V
IN
= 3.5V, I
OUT(total)
= 40mA
3
1
24
3
0.3
93
400
300
V
IN
= 2.7V to 5.5V
V
IN
= 2.7V to 5.5V
0.5
1.4
0.3
50
500
V
IN
= 5.5V
-1
1
75
V
mA
µA
mA
%/V
%
%
µs
kHz
V
V
µs
ns
µs
µA
AAT3194
Input Power Supply
V
IN
Operation Range
I
CC
Operating Current
I
SHDN
Shutdown Current
I
DX
Output Current
Output Current Line
ΔI
D
/ΔV
IN
Regulation
Current Matching
Between Any
I
(D-Match)
Two Outputs
η
Efficiency
Charge Pump
t
SS
Soft-Start Time
F
CLK
Clock Frequency
EN/SET
V
EN(L)
Enable Threshold Low
V
EN(H)
Enable Threshold High
t
LO
EN/SET Low Time
Minimum EN/SET
t
HI
High Time
t
OFF
EN/SET Off Timeout
Input
EN/SET Input Leakage
Current
16
-3
20
4
3194.2006.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
