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參數(shù)資料
| 型號： | RT9201PQV |
| 廠商： | Richtek Technology Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | High Efficiency PWM Step-Down DC-DC Converter |
| 中文描述： | 高效PWM降壓型DC - DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大小： | 206K |
| 代理商： | RT9201PQV |
RT9201
3
DS9201-12 August 2007
www.richtek.com
Function Block Diagram
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
EN
Tie this pin to 1.4V or higher to enable the device. Tie below 0.4V to shut-down.
2
SS
Soft Start, connect a capacitor from this pin to GND.
3
FB
Feedback Input pin. Connect a resistive voltage divider from the output voltage to FB
to GND.
4, 10
NC
No Connection.
5
GND
Analog Ground.
6
PGND
Power Ground.
7
LX
Switch node. Drains of the internal P-Channel and N-Channel MOSFET switches.
Connect an inductor to LX pins together as close as possible.
8
PVDD
Main Power Supply Pin.
9
VDD
Device Input Power Pin.
The exposed pad must be soldered to a large PCB and connected to GND for
maximum power dissipation.
Exposed Pad (11) GND
OSC & Shutdown
Control
Current
Sense
Control
Logic
Zero
Detector
Driver
Slope
Compensation
V
REF
LX
EN
PVDD
PGND
FB
SS
VDD
GND
PWM
Comparator
0.8V
Error
Amplifier
300k
Component Supplier
Part No.
Capacitance (uF)
10
22
10
22
10
22
22
Case Size
0805
1210
0805
1206
0805
0805
1206
C2012X5R0J106M
C3225X5R0J226M
ECJ2FB0J106M
ECJHVB0J226M
JMK212BJ106M
JMK212BJ226MG
JMK316BJ226ML
TDK
Panasonic
TAIYO YUDEN
Suggested Capacitors For C
IN
and C
OUT
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