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RT9018A 参数 Datasheet PDF下载

RT9018A图片预览
型号: RT9018A
PDF下载: 下载PDF文件 查看货源
内容描述: 最大3A ,超低压差稳压器 [Maximum 3A, Ultra Low Dropout Regulator]
分类和应用: 稳压器
文件页数/大小: 12 页 / 143 K
品牌: RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
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RT9018A/B
Maximum 3A, Ultra Low Dropout Regulator
General Description
The RT9018A/B is a high performance positive voltage
regulator designed for use in applications requiring very
low Input voltage and very low dropout voltage at up to
3A(Peak). It operates with a VIN as low as 1.0V and VDD
voltage 3V with output voltage programmable as low as
0.8V. The significant feature includes ultra low dropout,
ideal for applications where VOUT is very close to VIN.
Additionally, there is an enable pin to further reduce power
dissipation while shutdown. The RT9018A/B provides
excellent regulation over variations in line, load and
temperature. and provides a power OK signal to indicate
if the voltage level of Vo reaches 90% of its rating value.
The RT9018A/B is available in the SOP-8 (Exposed Pad)
and WDFN-10L 3x3 packages with 1V, 1.05V, 1.2V,
1.5V,
1.8V and 2.5V internally preset outputs that are also
adjustable using external resistors.
Features
Maximum 3A Low-Dropout Voltage Regulator
High Accuracy Output Voltage
±
1.5%
Typically 220mV Dropout at 3A
Power Good Output
Output Voltage Pull Low Resistance when Disable
Thermal and Over Current Protection
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Front Side Bus VTT (1.2V/3A)
NoteBook PC Applications
Motherboard Applications
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area, otherwise visit our website for detail.
Ordering Information
RT9018A/B
Package Type
SP : SOP-8 (Exposed Pad-Option 1)
QW : WDFN-10L 3x3
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Output Voltage
10 : 1V/Adj
1K : 1.05V/Adj
12 : 1.2V/Adj
15 : 1.5V/Adj
18 : 1.8V/Adj
25 : 2.5V/Adj
Enable Pin Function
A : Internal Pull High
B : Internal Pull Low
Note :
Richtek Pb-free and Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
100% matte tin (Sn) plating.
Pin Configurations
(TOP VIEW)
PGOOD
EN
VIN
VDD
2
3
4
8
7
GND
6
9
5
GND
ADJ
VOUT
NC
SOP-8 (Exposed Pad)
WDFN-10L 3x3
DS9018A/B-04
September 2007
9
VOUT
VOUT
VOUT
ADJ
PGOOD
1
2
3
4
5
GND
11
10
9
8
7
VDD
VIN
VIN
VIN
EN
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