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参数资料
| 型号： | MP1531DQ-LF-Z |
| 厂商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.65 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, QCC16 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, MO-220VEED-4, QFN-16 |
| 文件页数： | 8/12页 |
| 文件大小： | 287K |
| 代理商： | MP1531DQ-LF-Z |
MP1531 – LOW POWER, TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS
MP1531 Rev. 1.3
www.MonolithicPower.com
5
12/4/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
OPERATION
The MP1531 is a step-up converter with two
integrated linear regulators to power TFT LCD
panels. Typically the linear regulators are
powered from diode charge-pumps driven from
the switch node (SW). The user can set the
positive charge-pump to be a doubler, tripler, or
quadrupler to achieve the required linear
regulator input voltage for the selected output
voltage. Typically the negative charge-pump is
configured as a 1x or 2x inverter.
IN
REF
PGND
FB3
IN3
GH
RDY
SW
REFERENCE
PULSE-WIDTH
MODULATOR
OSCILLATOR
SOFT-START
FAULT TIMER
&
SEQUENCING
--
+
0.8VREF
--
+
0.8VREF
VREF
--
+
0.2VREF
--
+
VREF
GND
FB2
EN
FB1
COMP
CT
IN2
GL
--
+
GM
--
+
Figure 1—Functional Block Diagram
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