AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Electrical Characteristics1
CIN = COUT = C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C,
VIN = 3.6V.
Symbol
Description
Conditions
Min Typ Max Units
Input Power Supply
VIN Operation Range
2.7
5.5
V
1X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, High Current Mode
1.5X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, High Current Mode
2X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, High Current Mode
1X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, Low Current Mode
VEN/SET = 0V
0.3
1
mA
ICC
Operating Current
1
50
µA
ISHDN
IDX
Shutdown Current
1
µA
%
%
%
High Current Accuracy
Low Current Accuracy
Current Matching2
ISET = 18mA, TA = 25°C
-10
10
ISET = 400µA, TA = 25°C
15
I(D-Match)
VTH
VF:D1:D4 = 3.6V
0.5
1
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any ISINK Pin
150
mV
Charge Pump Section
TSS
FCLK
Soft-Start Time
100
µs
Clock Frequency
1000
kHz
EN/SET
VEN(L)
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
VIN = 2.7V
VIN = 5.5V
0.4
75
V
V
VEN(H)
1.4
0.3
TEN/SET LO
µs
ns
µs
µs
µs
µA
TEN/SET
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
50
_
_
HI MIN
TEN/SET
75
500
500
1
_
_
HI MAX
TOFF
TLAT
EN/SET Latch Timeout
EN/SET Input Leakage
IEN/SET
-1
1. The AAT3166 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. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
3166.2006.05.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
