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參數(shù)資料
| 型號： | RT8004QS |
| 廠商： | Richtek Technology Corporation |
| 英文描述： | 3A, 4MHz, Synchronous Step-Down Regulator |
| 中文描述： | 第3A，4MHz，同步降壓型穩(wěn)壓器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 257K |
| 代理商： | RT8004QS |
RT8004
3
DS8004-03 September 2007
www.richtek.com
Functional Pin Description
Pin No.
RT8004PS RT8004PCP RT8004PQP
Pin
Name
Pin Function
1
1
15
VDD
Signal Input Supply. Decouple this pin to GND with a capacitor.
Normally VDD is equal to PVDD.
Power Good Indicator. Open-drain logic output that is pulled to
ground when the output voltage is not within ±12.5% of regulation
point.
Error Amplifier Compensation Pin. The current comparator
threshold increases with this control voltage. Connect external
compensation elements to this pin to stabilize the control loop.
2
2
16
PGOOD
3
3
1
COMP
4
4
2
FB
Feedback Pin. Receives the feedback voltage from a resistive
divider connected across the output.
5
5
3
RT
Oscillator Resistor Input. Connecting a resistor to ground from this
pin sets the switching frequency.
6
6
4
SYNC
External Clock Synchronization Input. The internal oscillator can
be synchronized to an external clock applied to this pin. If not use,
please connect this pin to VDD or GND.
7
7
5
EN/SS
Enable Control and Soft-Start Input. Forcing this pin below 0.5V
shuts down the RT8004. In shutdown all functions are disabled
drawing < 1uA of supply current. A capacitor to ground from this
pin sets the ramp time to full output current.
8
8, Exposed
Pad (17)
6, Exposed
Pad (17)
GND
Signal Ground. All small-signal components, compensation
components and the exposed pad on the bottom side of the IC
should connect to this ground, which in turn connects to PGND at
one point.
9, 16
9, 16
7, 14
PVDD
Power Input Supply. Decouple this pin to PGND with a capacitor.
10,11,
14, 15
10,11,
14, 15
8, 9, 12, 13 LX
Internal Power MOSFET Switches Output. Connect this pin to the
inductor.
12, 13
12, 13
10, 11
PGND
Power Ground. Connect this pin close to the terminal of C
IN
and
C
OUT
.
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相關代理商/技術參數(shù) |
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|---|---|
| RT8005 | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:1A, 2MHz, High-Efficiency Synchronous Buck PWM Converter |
| RT8005GQV | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:1A, 2MHz, High-Efficiency Synchronous Buck PWM Converter |
| RT8005PQV | 制造商:RICHTEK 功能描述:DC/DC (IC) |
| RT8008 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1.5MHz,600mA,High Efficiency PWM Step-Down DC/DC Converter |
| RT8008-10PB | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:1.5MHz, 600mA, High Efficiency PWM Step-Down DC/DC Converter |
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