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參數(shù)資料
| 型號(hào)： | AAT3142ITP-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| 中文描述： | 高效率1x/1.5x/2x電荷泵白光LED應(yīng)用 |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大?。?/td> | 425K |
| 代理商： | AAT3142ITP-T1 |
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Electrical Characteristics
1
C
IN
= C
CP
= C
1
= C
2
= 1.0μF; T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C,
V
IN
= 3.5V.
Symbol
Input Power Supply
V
IN
Description
Conditions
Min Typ Max
Units
Operation Range
2.7
5.5
V
μA
mA
μA
%
%
I
cc
Operating Current
VD1:D3 = 2.0V, CP = 1X
No Load Current, CP = 1.5X
V
IN
= 3.5V, EN/SET = 0
V
IN
= 3.5V, T
A
= 25°C
VD1:D3 = 3.6V, V
IN
= 3.5V
V
IN
= 3.5V, I
OUT(TOTAL)
= 90mA,
Measured from IN to CP
550
3
5
1
10
3
I
SHDN
I
DX
I
(D-Match)
Shutdown Current
Output Current Accuracy
2
Current Matching
3
-10
-3
±0.5
η
CP
Charge Pump Section Efficiency
93
%
Charge Pump Section
T
SS
F
CLK
EN/SET
V
EN(L)
V
EN(H)
T
EN/SET LO
T
EN/SET HI MIN
T
EN/SET HI MAX
T
OFF
T
LAT
I
EN/SET
Soft-Start Time
Clock Frequency
50
1
μs
MHz
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
V
IN
= 2.7V
V
IN
= 5.5V
0.4
V
V
μs
ns
μs
μs
μs
μA
1.4
0.3
75
50
75
500
500
1
V
EN/SET
= 5.5V, V
IN
= 5.5V
-1
AAT3142
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
4
3142.2005.12.1.1
1. The AAT3142 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)
= (I
D
- I
AVE
)/I
AVE
.
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