AAT3159 Datasheet, PDF (4/15 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications

ChargePump^TM
PRODUCT DATASHEET
AAT3159
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
Electrical Characteristics¹
V_IN = 3.6V; 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.
Symbol Description
Input Power Supply
V_IN
Input Supply Voltage Range
I_CC
Operating Input Current
I_SHDN
Shutdown Current
I_DX
DX Pin Current
I_(D-Match)
V_TH
Current Matching²
1X to 1.5X or 1.5X to 2X Tran-
sition Threshold at Any DX Pin
I_SET
Current Set Ratio
V_SET
SET Pin Voltage
Charge Pump Section
T_SS
Soft-Start Time
F_CLK
Clock Frequency
EN/SET Logic Control
V_IL(EN/SET)
V_IH(EN/SET)
T_{EN/SET LO}
T_{EN/SET HI MIN}
T_{EN/SET HI MAX}
T_OFF
T_LAT
I_EN/SET
Enable Logic Low Threshold
Enable Logic High Threshold
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
T_A= -40°C to +85°C, R_SET = 26.1kΩ, Data = 1
(100%)
V_F:D1:D4 = 3.6V
I_SINK/I_RSET
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
870
A/A
0.6
V
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 AAT3159 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
2. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
www.analogictech.com
3159.2007.10.1.0