AAT3153
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 TA = 25°C, VIN = 3.6V.
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
2.0
50
3.7
50µA Setting, 1X Mode
EN/SET = 0
µA
µA
ISHDN
IDX
Shutdown Current
1
ISINK Average Current Accuracy
Current Matching Between Any
Two Current Sink Inputs2, 3
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any ISINK Pin
ISET = 30mA, TA = 25°C
18
20
22
mA
I(D-Match)
VTH
VF:D1:D4 = 3.6V
0.5
%
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 HI MIN Minimum EN/SET High Time
50
_
_
TEN/SET HI MAX Maximum EN/SET High Time
75
500
500
1
_
_
TOFF
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
TLAT
IEN/SET
-1
1. The AAT3153 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.
3. Specification applies only to the tri-mode charge pump.
4
3153.2005.12.0.93
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
