AAT3177 Datasheet, PDF (6/16 Pages) Advanced Analogic Technologies – High Current, High Efficiency Charge Pump with Auto-Timer

ChargePump^TM
PRODUCT DATASHEET
AAT3177
High Current, High Efficiency Charge Pump with Auto-Timer
Typical Characteristics
V_IN = 3.6V, C_IN = 4.7μF, C_OUT = 2.2μF, C₁ = C₂ = 1μF, T_A = 25°C, unless otherwise noted.
Operating Characteristic
(V_IN = 3.3V; 1.5X Mode; I_LED = 300mA)
Operating Characteristic
(V_IN = 2.9V; 2X Mode; I_LED = 300mA)
V_IN
(100mV/div)
V_OUT
(200mV/div)
V_SINK
(200mV/div)
V_IN
(100mV/div)
V_OUT
(200mV/div)
V_SINK
(200mV/div)
Time (2µs/div)
Time (2µs/div)
LED Current vs. R_SET
(Data = 1)
1000
900
800
700
600
500
400
300
200
100
0
100 200 300 400 500 600 700 800 900 1000
R_SET (kΩ)
EN/SET Latch Timeout vs. Supply Voltage
350
300
250
200
-40°C
25°C
150
100
85°C
50
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Supply Voltage (V)
Flash Timer Duration
(C_T = 0.1µF)
1.8
1.6
-40°C
1.4
25°C
1.2
1.0
0.8
85°C
0.6
0.4
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Supply Voltage (V)
EN/SET Off Timeout vs. Supply Voltage
350
300
250
-40°C
200
25°C
150
85°C
100
50
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Supply Voltage (V)
6
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3177.2008.06.1.0