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参数资料
| 型号： | YB1313QF33 |
| 厂商： | YOBON TECHNOLOGIES, INC. |
| 英文描述： | 1x/1.5x/2x Charge Pump for White LED Application |
| 中文描述： | 1x/1.5x/2x充电泵白光LED应用 |
| 文件页数： | 5/9页 |
| 文件大小： | 641K |
| 代理商： | YB1313QF33 |
YB1313
1x/1.5x/2x Charge Pump for White LED Application
YB1313 MRev.1.1
www.yobon.com.tw
5
1x/1.5x/2x
Charge Pump
10
11
9
12
8
Reference
13
Current Sinks
2
3
4
5
6
Control
Selmin
1
15
16
14
7
C1+
EN1
EN2
C1-
C2+
C2-
VIN
GND
ISET
D5
D4
D3
D2
D1
PGND
VOUT
+
-
Figure 3. Block Diagram
Functional Block
Functional Description
The YB1313 uses a multi-mode fractional
charge pump to generate a supply voltage and a
precise sink circuitry to ensure a constant
driving current for each LED. The charge pump
operates in either 1x mode, 1.5x mode or 2x
mode, depending on the input voltage and
output current loading. The overall power
consumption is best optimized by automatically
switching among the 3 different operation
mode.
The charge pump is possible to generate a total
output current of more than 125 mA, more than
25 mA for each LED. But it is recommended to
operate the device under total 125 mA.
Connecting a RSET resistor of 10K ohm from
pin ISET to ground generates around 20 mA
LED output current and a RSET of 7.5K
generates around 26 mA.
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