AAT3152 Datasheet, PDF (4/10 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications

AAT3152
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
Electrical Characteristics1
C_IN = C_OUT = C1 = C2 = 1.0µF; T_A = -40°C - 85°C, unless otherwise noted.
Typical values are at T_A = 25°C, V_IN = 3.6V.
Symbol Description
Conditions
Min Typ Max Units
Input Power Supply
V_IN
Operation Range
2.7
5.5
V
1X Mode, 3.0 ≤ V_IN ≤ 5.5, Active,
No Load Current
0.3 1
I_CC
Operating Current
1.5X Mode, 3.0 ≤ V_IN ≤ 5.5, Active,
No Load Current
2X Mode, 3.0 ≤ V_IN ≤ 5.5, Active,
No Load Current
1
3
mA
1.5 3
50µA Setting, 1X Mode
80
µA
I_SHDN
I_DX
I_(D-Match)
V_TH
Shutdown Current
I_SINK Average Current Accuracy
Current Matching (Note 2)
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any Current Sink Pin
EN/SET = 0
I_SET = 20mA, T_A = 25°C
V_F:D1:D4 = 3.6V
1
µA
-10
10
%
12
%
150
mV
Charge Pump Section
T_SS
F_CLK
EN/SET
Soft-Start Time
Clock Frequency
100
µs
1000
kHz
V_EN(L)
V_EN(H)
T_{EN/SET LO}
T_{EN/SET HI}
T_OFF
T_LAT
I_EN/SET
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
V_EN/SET <0.6V
V_EN/SET >1.4V
V_EN/SET <0.6V
V_EN/SET >1.4V
0.4
V
1.4
V
0.3
75 µs
50
ns
500 µs
500 µs
-1
1
µA
Notes:
1. The AAT3152 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
3152.2004.12.0.9