AAT3151
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
Electrical Characteristics1
CIN = COUT = C1 = C2 = 1.0µF; TA = -40°C - 85°C, unless otherwise noted.
Typical values are at TA = 25°C, VIN = 3.5V.
Symbol
Description
Conditions
Min Typ Max Units
Input Power Supply
VIN Operation Range
2.7
5.5
1
V
1X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current
0.3
1
1.5X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current
3
mA
ICC
Operating Current
2X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current
TBD TBD
50µA Setting, 1X Mode
EN/SET = 0
40
µA
µA
mA
%
ISHDN
IDX
I(D-Match)
VTH
Shutdown Current
1
2
ISINK Current Accuracy
ISET = 30mA, TA = 25°C
VF:D1:D4 = 3.6V
27
30
0.5
150
33
5
3
Current Matching
1X to 1.5X or 1.5X to 2X Transition ISET = 20mA
Threshold at Any ISINK Pin
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
TEN/SET HI
TOFF
µs
ns
µs
µs
µA
Minimum EN/SET High Time
EN/SET Off Timeout
50
500
500
1
TLAT
EN/SET Latch Timeout
EN/SET Input Leakage
IEN/SET
-1
Notes:
1. The AAT3151 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. Determined by the average of all active channels.
3. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
3151.2004.10.0.6