AAT2806 Datasheet, PDF (4/16 Pages) Advanced Analogic Technologies – Dual High Efficiency Charge Pump for White LED AND Flash Applications

AAT2806
Dual High Efficiency Charge Pump
for White LED and Flash Applications
Electrical Characteristics¹
V_IN = 3.6V; C_IN = C_OUT = C₁ = C₂ = C₃ = 1.0µF; T_A = -40°C to +85°C, unless otherwise noted.
Typical values are T_A = 25°C.
Symbol Description
Conditions
Min Typ Max Units
Input Power Supply
V_IN
Operation Range
I_CC
Operating Current
2.7
1X Mode, 3.0 ≤ V_IN ≤ 5.5, Active, No Load
0.3
Current; EN_FLSH = GND, EN/SET = V_IN
1.5X Mode, 3.0 ≤ V_IN ≤ 5.5, Active, No Load
1.0
Current; EN_FLSH = GND, EN/SET = V_IN
2X Mode, 3.0 ≤ V_IN ≤ 5.5, Active, No Load
2.0
Current; EN_FLSH = GND, EN/SET = V_IN
EN_FLSH = GND, 50µA Output Setting,
50
1X Mode
I_SHDN
I_DX
I_(D-Match)
Shutdown Current
Input Current Accuracy^{2, 3}
Current Matching Between Any
Two Current Sink Inputs^{2, 4}
3.0 ≤ V_IN ≤ 5.5, No Load Current;
EN_FLSH = V_IN, EN/SET = GND
EN_FLSH = EN/SET = 0
I_SET = 20mA and I_SET = 4.1mA; T_A = 25°C
VD1:D4 = 3.6V, V_IN = 3.5V
2.0
-10
0.5
R_SINK
V_{OUT_FL}
I_{OUT_FL}
T_SS
F_CLK
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_I
Sink Switch Impedance (each)²
Flash Charge Pump Output
Voltage⁵
Maximum Continuous I_OUT⁵
Maximum Pulsed I_OUT⁵
Soft-Start Time
Clock Frequency
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
Enable and EN/SET Input
Leakage
3.0V < V_IN < 5V, I_OUT = 100mA;
EN_FLSH = V_IN
3.0V < V_IN < 5V, I_OUT = 150mA;
EN_FLSH = V_IN
V_IN = 3.6V; V_OUT = 4.5V; EN_FLSH = V_IN
V_IN = 3.6V; V_OUT = 4.5V; I_PULSED < 500ms
7
4.32 4.5
4.3 4.5
120
250
100
1.0
1.4
0.3
50
-1.0
5.5
1
3.0
3.7
4.5
1.0
10
4.68
4.7
0.4
75
75
500
500
1.0
V
mA
µA
mA
µA
%
%
Ω
V
mA
µs
MHz
V
V
µs
ns
µs
µs
µs
µA
1. The AAT2806 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. Specification applies only to the tri-mode charge pump.
3. Determined by the average of all active channels.
4. Current matching is defined as the deviation of any sink current from the average of all active channels.
5. Specification applies only to the charge pump doubler.
4
2806.2006.04.1.8