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參數(shù)資料
| 型號(hào)： | AAT3143ITP-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications |
| 中文描述： | 高效率1x/1.5x/2x充電泵為白色帶PWM控制LED應(yīng)用 |
| 文件頁(yè)數(shù)： | 4/11頁(yè) |
| 文件大?。?/td> | 486K |
| 代理商： | AAT3143ITP-T1 |
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 T
A
= 25°C,
V
IN
= 3.5V.
Symbol
Description
Conditions
Min
Typ
Max
Units
Input Power Supply
V
IN
Operation Range
2.7
5.5
V
I
CC
Operating Current
VD1:D4 = 2.0V, CP = 1X
No Load Current, CP = 1.5X
EN/PWM = 0
I
OUT
= 20mA, T
A
= 25°C, V
IN
= 3.5V
VD1:D4 = 3.6V, V
IN
= 3.5V
V
IN
= 3.5V, I
OUT(TOTAL)
= 80mA,
Measured from IN to CP
550
3
μA
5
1
22
3
I
SHDN
I
DX
I
(D-Match)
Shutdown Current
Output Current Accuracy
Current Matching
2
μA
mA
%
18
-3
20
±0.5
η
CP
Charge Pump Efficiency
93
%
Charge Pump Section
F
CLK
EN/PWM
V
EN(L)
V
EN(H)
F
PWM
t
ON(MIN)
Clock Frequency
1000
kHz
Enable Threshold Low
Enable Threshold High
Maximum PWM Frequency
Minimum Pulse Width
0.4
V
V
1.4
50
2
kHz
μs
AAT3143
High Efficiency 1X/1.5X/2X Charge Pump with
PWM Control for White LED Applications
4
3143.2006.05.1.0
1. The AAT3143 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 I
(D-Match)
= (I
D
- I
AVE
)/I
AVE
.
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