AAT3122 Ver la hoja de datos (PDF) - Advanced Analogic Technologies
Número de pieza
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Fabricante
AAT3122
Advanced Analogic Technologies
AAT3122 Datasheet PDF : 12 Pages
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AAT3122
High Efficiency 1X/1.5X Fractional Charge
Pump for White LED Applications
Electrical Characteristics1
VIN = 3.5V; CIN = COUT = C1 = C2 = 1.0µF; TA = -40 to 85°C. Unless otherwise noted, typical values are TA = 25°C
Symbol
Description
Conditions
Min Typ Max Units
Input Power Supply
VIN
Operation Range
2.7
5.5
V
Icc
Operating Current
3.0 ≤ VIN ≤ 5.5, Active,
1.8 3.5
mA
No Load Current
ISHDN
ID
Charge Pump
Shutdown Current
Max. Output Current
EN = 0
VIN = 3.5V; Code = 32
1.0
µA
108 120 132 mA
TSS
FCLK
ηCP
Soft start time
200
µs
Clock Frequency
1000
KHz
Charge Pump Efficiency
VIN = 3.6, IOUT(Total) = 120mA;
93
%
Measured from IN to OUT
EN/SET
VEN(L)
VEN(H)
TLO
THI
TOFF
Input Current
Enable Threshold Low
Enable Threshold High
EN/SET low time
Minimum EN/SET high time
EN/SET Off Timeout
EN/SET input leakage
VIN = 2.7 to 5.5V
VIN = 2.7 to 5.5V
0.5
V
1.4
V
0.3
75
µs
50
ns
500
µs
-1.0
1.0
µA
Note 1: The AAT3122 is guaranteed to meet performance specification over the -40 to +85°C operating temperature range, and are
assured by design, characterization and correlation with statistical process controls.
4
3122.2004.08.1.2
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