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| AAT3167_07 Datasheet, PDF (4/14 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications | |||
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AAT3167
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Electrical Characteristics1
CIN = COUT = C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C,
VIN = 3.6V.
Symbol Description
Conditions
Min Typ Max Units
Input Power Supply
VIN
Operation Range
2.7
5.5 V
1X Mode, 3.0 ⤠VIN ⤠5.5, Active,
No Load Current, High Current Mode
0.3
ICC
Operating Current
1.5X Mode, 3.0 ⤠VIN ⤠5.5, Active,
No Load Current, High Current Mode
1
mA
2X Mode, 3.0 ⤠VIN ⤠5.5, Active,
No Load Current, High Current Mode
1
1X Mode, 3.0 ⤠VIN ⤠5.5, D5 Active,
IDS = 100µA, Low Current Mode
50
µA
ISHDN
Shutdown Current
VEN/SET = 0V
1
µA
IDX
High Current Accuracy
Low Current Accuracy
ISET = 18mA, TA = 25°C
ISET = 400µA, TA = 25°C
-10
10
%
15
%
I(D-Match)
Current Matching2
VF:D1:D5 = 3.6V
0.5 1
%
VTH
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any ISINK Pin
150
mV
Charge Pump Section
TSS
FCLK
EN/SET
Soft-Start Time
Clock Frequency
100
µs
1000
kHz
VEN(L)
VEN(H)
TEN/SET LO
TEN/SET HI
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
VIN = 2.7V
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 AAT3167 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. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
3167.2007.03.1.4
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