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| AAT3141_07 Datasheet, PDF (4/16 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications | |||
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AAT3141
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
Electrical Characteristics1
CIN = CCP = C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C,
VIN = 3.5V.
Symbol Description
Input Power Supply
VIN
Operation Range
Icc
Operating Current
ISHDN
Shutdown Current
IDX
Output Current Accuracy2
I(D-Match)
Current Matching3
ηCP
Charge Pump Section Efficiency
Charge Pump Section
TSS
FCLK
EN/SET
Soft-Start Time
Clock Frequency
VEN(L)
VEN(H)
TEN/SET LO
TEN/SET HI MIN
TEN/SET HI MAX
TOFF
TLAT
IEN/SET
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
EN/SET Input Leakage
Conditions
Min Typ Max Units
2.7
5.5 V
VD1:D4 = 2.0V, CP = 1X
550
µA
No Load Current, CP = 1.5X
3 5 mA
VIN = 3.5V, EN/SET = 0
1
µA
VIN = 3.5V, TA = 25°C
-10
10 %
VIN = 3.5V, TA = 25°C, Code 28 17.1 19 20 mA
VD1:D4 = 3.6V, VIN = 3.5V
-3 ±0.5 3
%
VIN = 3.5V, IOUT(TOTAL) = 120mA,
93
%
Measured from IN to CP
50
µs
1
MHz
VIN = 2.7V
VIN = 5.5V
VEN/SET = 5.5V, VIN = 5.5V
0.4 V
1.4
V
0.3
75 µs
50
ns
75 µs
500 µs
500 µs
-1
1
µA
1. The AAT3141 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. Codes 2 through 7 are guaranteed to be within ±15% of stated current level.
3. Current matching is defined as I(D-Match) = (ID - IAVE)/IAVE.
4
3141.2007.03.1.3
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