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参数资料
| 型号： | RT8011PQW |
| 厂商： | Richtek Technology Corporation |
| 英文描述： | 2A, 4MHz, Synchronous Step-Down Regulator |
| 中文描述： | 第2A，4MHz，同步降压型稳压器 |
| 文件页数： | 3/17页 |
| 文件大小： | 424K |
| 代理商： | RT8011PQW |
RT8011/A
3
DS8011/A-00 August 2006
www.richtek.com
Functional Pin Description
Pin Number
RT8011
RT8011A
Pin Function
Pin Name
1
1
SHDN/RT
Oscillator Resistor Input. Connecting a resistor to ground from this pin sets
the switching frequency. Forcing this pin to V
DD
causes the device to be shut
down.
External Clock Synchronization Input. The oscillation frequency can be
synchronized to an external oscillation applied to this pin. When tied to V
DD
,
internal oscillator is selected.
Signal Ground. All small-signal components and compensation components
should connect to this ground, which in turn connects to PGND at one point.
2
--
SYNC
3
2
GND
4
3
LX
Internal Power MOSFET Switches Output. Connect this pin to the inductor.
5
4
PGND
Power Ground. Connect this pin close to the (
) terminal of C
IN
and C
OUT
.
6
5
PVDD
Power Input Supply. Decouple this pin to PGND with a capacitor.
7
6
VDD
Signal Input Supply. Decouple this pin to GND with a capacitor. Normally V
DD
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.
Feedback Pin. Receives the feedback voltage from a resistive divider
connected across the output.
Error Amplifier Compensation Point. The current comparator threshold
increases with this control voltage. Connect external compensation elements
to this pin to stabilize the control loop.
8
--
PGOOD
9
7
FB
10
8
COMP
Figure 4. RT8011A Layout Guide
Figure 3. RT8011 Layout Guide
Layout Guide
V
IN
GND
L1
V
OUT
GND
C
IN
C
OUT
V
OUT
V
IN
R
COMP
C
COMP
R2
R1
C
F
R
OSC
C
IN
must be placed between
V
and GND as closer as
possible
LX should be
connected to
Inductor by wide
and short trace,
keep sensitive
compontents away
from this trace
Output capacitor must
be near RT8011
Connect the FB pin directly to feedback resistors. The
resistor divider must be connected between V
OUT
and
GND.
COMP
VDD
SHDN/RT
LX
GND
FB
PGOOD
PGND
PVDD
SYNC
5
6
7
8
4
3
2
10
9
1
RT8011
V
IN
GND
L1
V
OUT
GND
C
IN
C
OUT
V
OUT
R
COMP
C
COMP
R2
R1
C
F
R
OSC
C
IN
must be placed between
V
DD
and GND as closer as
possible
LX should be
connected to
Inductor by wide
and short trace,
keep sensitive
compontents away
from this trace
Output capacitor must
be near RT8011A
Connect the FB pin directly to feedback resistors. The
resistor divider must be connected between V
OUT
and
GND.
COMP
VDD
SHDN/RT
LX
GND
FB
PGND
PVDD
4
5
6
3
2
8
7
1
RT8011A
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相关代理商/技术参数 |
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|---|---|
| RT8012A | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual 1A/1.5A-1.2MHz Synchronous Step-Down Converters |
| RT8012AGQW | 功能描述:IC REG BUCK SYNC ADJ DL 16WQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:升压（升压） 输出类型:两者兼有 输出数:1 输出电压:5V，2 V ~ 16.5 V 输入电压:2 V ~ 16.5 V PWM 型:- 频率 - 开关:45kHz 电流 - 输出:50mA 同步整流器:无 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:8-PDIP |
| RT8012APQW | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:Dual 1A/1.5A-1.2MHz Synchronous Step-Down Converters |
| RT8015 | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:2A, 2MHz, Synchronous Step-Down Regulator |
| RT8015A | 制造商:RICHTEK 制造商全称:Richtek Technology Corporation 功能描述:3A, 2MHz, Synchronous Step-Down Converter |
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