AAT3151B_08 ANALOGICTECH [Advanced Analogic Technologies], AAT3151B_08 Datasheet - Page 4

• Manufacturer Part Number: AAT3151B_08
• Description: High Efficiency 1X/1.5X Charge Pump For White LED Applications
• Manufacturer: ANALOGICTECH [Advanced Analogic Technologies]

Electrical Characteristics
C
1. The AAT3151B is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and cor-
2. Determined by the average of all active channels.
3. Current matching is defined as the deviation of any sink current at I
4. Specification applies only to the tri-mode charge pump.
5. The EN/SET pin must remain logic low (less than V
6. The EN/SET pin must remain logic high (greater than V
4
4
ChargePump
ChargePump
Input Power Supply
Charge Pump Section
EN/SET
T
T
IN
relation with statistical process controls.
Symbol
EN/SET_HI_MAX
EN/SET_HI_MIN
T
I
= C
(D-Match)
EN/SET LO
I
I
EN/SET
F
T
T
V
SHDN
V
T
V
I
I
V
CLK
OFF
CC
DX
LAT
TH
SS
IN
IL
IH
OUT
= C
Description
Operation Range
Operating Current
Shutdown Current
I
Current Matching Between Any
Two Current Sink Inputs
1X to 1.5X Transition Threshold
at Any I
Soft-Start Time
Clock Frequency
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
SINK
1
= C
Current Accuracy
TM
TM
2
SINK
= 1.0μF; T
Pin
High Efficiency 1X/1.5X Charge Pump For White LED Applications
High Efficiency 1X/1.5X Charge Pump For White LED Applications
5
A
2
6
= -40°C to +85°C, unless otherwise noted. Typical values are T
3, 4
IL
) for the duration of longer than 500μs to guarantee the off timeout.
IH
1
) for the duration of longer than 500μs to guarantee the latch timeout.
Conditions
1X Mode, 3.0 ≥ V
1.5X Mode, 3.0 ≥ V
50μA Setting, 1X Mode
EN/SET = 0
I
V
I
V
V
SET
SET
F
IN
IN
:D1:D4 = 3.6V
= 2.7V
= 5.5V
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
= 30mA, T
= 20mA
OUT
= 20mA and 2mA.
A
= 25°C
IN
IN
≥ 5.5, Active, No Load Current
≥ 5.5, Active, No Load Current
PRODUCT DATASHEET
PRODUCT DATASHEET
AAT3151B
AAT3151B
Min
2.7
1.4
0.3
27
-1
A
= 25°C, V
1000
Typ
150
100
0.3
0.5
50
30
50
1
3151B.2008.02.1.1
3151B.2008.02.1.1
Max
500
500
5.5
0.4
33
75
75
1
3
1
1
IN
= 3.5V.
Units
kHz
mA
mA
mV
μA
μA
μA
μs
μs
ns
μs
μs
μs
%
V
V
V