AAT3340_08 Datasheet, PDF (4/14 Pages) Advanced Analogic Technologies – High Efficiency 1x/1.5x Charge Pump

ChargePump^TM
PRODUCT DATASHEET
AAT3340
High Efficiency 1x/1.5x Charge Pump
Electrical Characteristics
V_IN = 3.6V; C_IN = C_OUT = 1μF; C1= C2 = 1μF; T_A = -40°C to 85°C unless otherwise noted. Typical values are T_A = 25°C.
Symbol Parameter
Input Power Supply
V_IN
Input Voltage Range
I_Q
Operating Current
I_SHDN
V_IN Shutdown Current
V_{IN_(TH)}
Charge Pump Mode Hysteresis
T_SD
Thermal Shutdown Threshold
T_SD(HYS)
Thermal Shutdown Hysteresis
LED Current Sink Outputs
I_(D-ACC)
LED Current Accuracy
I_(D-Match)
V_{D_(TH)}
I_DMAX
LED Current Matching¹
Hysteresis for Mode Change
Charge Pump Maximum
Output Current
f_OSC
V_{BL_(TH)}
Clock Frequency
Charge Pump Mode Transition
Threshold
t_SS
Charge Pump Start Up Time
EN/SET and S²Cwire Control
V_ENH
EN/SET Input High Threshold
Voltage
V_ENL
EN/SET Input Low Threshold
Voltage
t_{EN/SET(HI_MIN)}
t_{EN/SET(HI_MAX)}
t_EN/SET(LOW)
t _EN/SET(OFF)
t_EN/SET(LAT)
EN/SET Minimum High Time
EN/SET Maximum High Time
EN/SET Input Low Time
EN/SET Input OFF Timeout
EN/SET Input Latch Timeout²
Conditions
EN/SET = IN; 1x Mode, V_D1 = V_D2 = V_D3; V_D4 = 1V
EN/SET = IN; 1.5x Mode, I_D1 = I_D2 = I_D3; I_D4 = Open
EN/SET = GND
1x to 1.5x Transition at Any I_DX; I_D1 = I_D2 = I_D3;
I_D4 = 20mA
EN/SET = DATA1
EN/SET = DATA31
I_MLED = 20mA
I_MLED = 20mA at 1.5x to 1x Mode
Min Typ Max Units
2.7
5.5
1.8 7.0
4.8 7.2
1
0.15
140
15
18
0.52
20
0.64
±3
0.15
120
1
0.15
150
22
0.78
0.25
V
mA
μA
V
°C
°C
mA
%
V
mA
MHz
V
μs
1.4
V
0.4
V
50
ns
75
μs
0.3
75
μs
500
μs
500
μs
1. LED current match is defined as 100 (IDX - IAVG)/IAVG.
2. If the part has been shut down, then the latch time would be 500μs longer for soft start of charge pump.
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3340.2008.07.1.1