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| AAT3140 Datasheet, PDF (4/16 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications | |||
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AAT3140
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
IDX
I(D-Match)
ηCP
Shutdown Current
Output Current Accuracy2
Current Matching3
Charge Pump Section Efficiency
Charge Pump Section
TSS
Soft-Start Time
FCLK
Clock Frequency
EN/SET
VEN(L)
Enable Threshold Low
VEN(H)
Enable Threshold High
TEN/SET LO EN/SET Low Time
TEN/SET HI MIN Minimum EN/SET High Time
TEN/SET HI MAX Maximum EN/SET High Time
TOFF
TLAT
EN/SET Off Timeout
EN/SET Latch Timeout
IEN/SET
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 %
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 AAT3140 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 2-7 are guaranteed to be within +/-15% of stated current level.
3. Current matching is defined as I(D-Match) = (ID - IAVE)/IAVE.
4
3140.2005.03.1.1
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