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參數(shù)資料
| 型號(hào)： | AAT3167 |
| 廠商： | Advanced Analog Technology,lnc. |
| 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)： | 10/14頁(yè) |
| 文件大?。?/td> | 411K |
| 代理商： | AAT3167 |
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AAT3167
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
10
3167.2007.03.1.4
the Max Current register (Register 3) is set to the
Low Current setting, the Low Current register
(Register 4) must be programmed. The two most
significant bits of the Low Current register control
whether or not a given bank of current sinks is
enabled. The least two significant bits of the Low
Current register set the current level for both
banks. For low-current settings, the charge pump
may be enabled if required by the battery voltage
and LED forward voltage conditions, and 1X mode
quiescent current is approximately 100μA for multi-
ple channels or 50μA for Channel 5 operation only.
Both banks of current sinks must be in the same
high- or low-current mode of operation.
When EN/SET is held low for an amount of time
greater than T
OFF
, the AAT3167 enters shutdown
mode and draws less than 1μA from V
IN
. Data and
Address registers are reset to 0 during shutdown.
AS
2
Cwire Serial Interface Addressing
Low Current Register (Address 4)
Auto-Disable Feature
The AAT3167 is equipped with an auto-disable fea-
ture for each LED channel. After the IC is enabled
and started up, a test current of 120μA (typical) is
forced through each sink channel. The channel will
be disabled if the voltage of that particular SINK pin
does not drop to a certain threshold. This feature is
very convenient for disabling an unused channel or
during an LED fail-short event.
Thermal Protection
The AAT3167 has a built-in thermal protection cir-
cuit that will shut down the charge pump if the die
temperature rises above the thermal limit, as would
be the case during a short circuit of the OUTCP pin.
Main Low
Current On
Sub Low
Current On
Data
Current
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
115μA
175μA
280μA
400μA
115μA
175μA
280μA
400μA
115μA
175μA
280μA
400μA
Data
Max Current
1
2
3
4
18mA
27mA
14mA
Low Current
(see Low Current Register for values)
EN/SET
Rising Edges
Data Register
AAT3167
Address
0
1
2
3
4
17
18
19
20
21
1&2: D1~D5 Current
1: D1~D4 Current
2: D5 Current
3: Max Current
4: Low Current
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT3167IFO-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167ISN-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169IFO-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169ISN-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3167_07 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167IFO-T1 | 制造商:AAT 制造商全稱:AAT 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167ISN-T1 | 制造商:AAT 制造商全稱:AAT 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
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