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AAT3112 Datasheet, PDF (4/16 Pages) Advanced Analogic Technologies – 500mA High Efficiency Charge Pump for White LED Flash Applications
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AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
Electrical Characteristics1
VIN = 3.3V, VOUT = 5.0V, CIN = COUT = 10μF, C1 = C2 = 1.0μF; TA = -40°C to +85°C, unless otherwise noted.
Typical values are TA = 25°C.
Symbol Description
Conditions
AAT3112-4.5
Input Power Supply
VIN
IQ
ISHDN
Operation Range
Quiescent Current2
Shutdown Current
IOUT
Pulsed Output Current
VOUT
Output Voltage
Charge Pump Section
FCLK
ηCP
EN
Clock Frequency
Charge Pump Efficiency
VEN(L)
VEN(H)
IEN
AAT3112-5.0
Enable Threshold Low
Enable Threshold High
EN Input Leakage
Input Power Supply
VIN
IQ
ISHDN
IOUT
Operation Range
Quiescent Current2
Shutdown Current
Pulsed Output Current
VOUT
Output Voltage
Charge Pump Section
FCLK
ηCP
EN
Clock Frequency
Charge Pump Efficiency
VEN(L)
VEN(H)
IEN
Enable Threshold Low
Enable Threshold High
EN Input Leakage
2.7 ≤ VIN ≤ 4.5, IOUT = 0mA; EN1 = EN2 = VIN
EN1 = EN2 = 0
VIN = 3.6V; VOUT = 4.0V; TPULSE = 50ms
VIN = 3.6V; VOUT = 4.0V; TPULSE = 500ms
2.7 ≤ VIN ≤ 4.5, IOUT = 100mA
3.0 ≤ VIN ≤ 4.5, IOUT = 200mA
VIN = 2.7V; IOUT = 100mA
2.7 ≤ VIN ≤ 5.0, IOUT = 0mA; EN1 = EN2 = VIN
EN1 = EN2 = 0
VIN = 3.6V; VOUT = 4.5V; TPULSE = 50ms
VIN = 3.6V; VOUT = 4.5V; TPULSE = 500ms
2.7 ≤ VIN ≤ 5.0, IOUT = 100mA
3.0 ≤ VIN ≤ 5.0, IOUT = 200mA
VIN = 2.7V; IOUT = 100mA
Min
2.7
4.32
4.32
1.4
-1.0
2.7
4.8
4.8
1.4
-1.0
Typ Max Units
4.5 V
26 60 μA
1.0 μA
590
mA
500
4.5 4.68 V
4.5 4.68
750
kHz
80
%
0.3 V
V
1.0 μA
5.0 V
26 60 μA
1.0 μA
600
mA
500
5.0 5.2
V
5.0 5.2
750
kHz
85
%
0.3 V
V
1.0 μA
1. The AAT3112 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. VOUT1 and VOUT2 are pulled high to prevent switching.
4
3112.2007.01.1.5
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