RT9008 Datasheet, PDF (1/9 Pages) Richtek Technology Corporation – Low Dropout Linear Regulator Controller with Soft-Start

RT9008
Low Dropout Linear Regulator Controller with Soft-Start
General Description
The RT9008 is a wide input range, low dropout voltage
regulator controller with soft-start function. The part drives
an external N-MOSFET and can operate with VCC power
range from 4.5V to 13.5V. With this flexible topology and
wide input voltage range, the RT9008 is suitable for various
applications. The soft-start function can reduce the input
inrush current by adjusting the external capacitor. The
RT9008 uses the small footprint package of the SOT-23-6.
Features
z Programmable Output Voltage
z High Current Driver for High Current FET
z Adjustable Soft Start Time
z High Accuracy ±2% Reference Voltage
z Quick Line and Load Transient Response
z Enable Control
z Small Footprint Package SOT-23-6
z RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9008
Package Type
E : SOT-23-6
Note :
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Richtek 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.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Applications
z Desktop/Notebook PC
z DSC
z Processor Power Sequencing
Pin Configurations
(TOP VIEW)
VCC DRI SS
6
5
4
2
3
EN GND FB
SOT-23-6
Typical Application Circuit
V_CC
V_IN
RT9008
6 _VCC
SS ⁴
C_CC
DRI ⁵
C_SS
Q1
Chip Enable
1 _EN
R1
2 _GND
FB ³
R2
VOUT = VREF x ( ^{R1 + R2} )
R2
C_IN
V_OUT
C_OUT
DS9008-01 April 2011
www.richtek.com
1