AAT3158 Datasheet, PDF (4/11 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications

AAT3158
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 to +85°C, unless otherwise noted. Typical values are T_A = 25°C,
V_IN = 3.6V.
Symbol Description
Input Power Supply
V_IN
Operation Range
I_CC
Operating Current
I_SHDN
Shutdown Current
I_DX
I_SINK Average Current Accuracy
I_(D-Match)
Current Matching²
V_TH
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any I_SINK Pin
Charge Pump Section
T_SS
F_CLK
EN/SET
Soft-Start Time
Clock Frequency
V_EN(L)
V_EN(H)
T_{EN/SET LO}
T_{EN/SET HI MIN}
T_{EN/SET HI MAX}
T_OFF
T_LAT
I_EN/SET
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
Conditions
1X Mode, 3.0 ≤ V_IN ≤ 5.5, Active,
No Load 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
50µA Setting, 1X Mode
EN/SET = 0
VF:D1:D4 = 3.6V
V_IN = 2.7V
V_IN = 5.5V
Min Typ Max Units
2.7
5.5
V
0.3 1
1
3
mA
1
50
µA
1
µA
18 20 22 mA
0.5 1
%
150
mV
100
µs
1000
kHz
0.4
V
1.4
V
0.3
75 µs
50
ns
75 µs
500 µs
500 µs
-1
1
µA
1. The AAT3158 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.
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3158.2006.02.1.0