Regulator Controller. RT9194 Datasheet

RT9194 Controller. Datasheet pdf. Equivalent


Richtek Technology RT9194
www.DataSheet4U.com
RT9194
Low-Dropout Linear Regulator Controller with PGOOD
Indication
General Description
Features
The RT9194 is a low-dropout voltage regulator controller
with a specific PGOOD indicating scheme, it acts as a
power supervisor of the power regulated. The part could
drive an external N-Channel MOSFET for various
applications accordingly; especially, the part is operated
with VCC power ranging from 4.5V to 13.5V. With such a
topology, it's with advantages of flexible and cost-effective.
The part comes to a small footprint package of SOT-23-6.
z 4.5V to 13.5V Operation Voltage
z High Accuracy ± 2% 0.8V Voltage Reference
z Quick Transient Response
z Power Good Indicator with Delay
z Enable Control
z Compliant with Intel Grantsdale Chipset Platform
Design GuideSpecification
z Small Footprint Package SOT-23-6
z RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9194
Package Type
E : SOT-23-6
Note :
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
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.
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.
Applications
z Special Designed for Intel® Grantsdale platform
FSB_VTT power regulation
z Processor Power-Up Sequening
z Notebook and laptop PC
z Other Power regulation with Power Good indication.
Pin Configurations
(TOP VIEW)
VCC DRI PGOOD
65 4
123
EN GND FB
SOT-23-6
Note : There is no pin1 indicator on top mark for SOT-23-6
type, and pin 1 will be lower left pin when reading top mark
from left to right.
Typical Application Circuit
VCC
VIN
Chip Enable
1 EN
VCC 6
2
GND
RT9194
DRI 5
3 FB
PGOOD 4
Ccc
RPGOOD
Q1
PGOOD
R1
CIN
VOUT
COUT
DS9194-08 March 2007
VOUT
= 0.8 × R1+ R2
R2
R2
www.richtek.com
1


RT9194 Datasheet
Recommendation RT9194 Datasheet
Part RT9194
Description Low-Dropout Linear Regulator Controller
Feature RT9194; www.DataSheet4U.com RT9194 Low-Dropout Linear Regulator Controller with PGOOD Indication General De.
Manufacture Richtek Technology
Datasheet
Download RT9194 Datasheet




Richtek Technology RT9194
www.DataSheet4U.com
RT9194
Test Circuit
Chip Enable
VCC
12V
VIN
EN VCC
Ccc
1uF
CIN
100uF
GND RT9194 DRI
FB PGOOD
100k
RPGOOD
Q1
PHD3055
VOUT
PGOOD
R1
1k
COUT
100uF
VOUT
=
0.8 × R1+ R2
R2
R2
2k
Figure 1. Typical Test Circuit
VCC
12V
Chip Enable
5V
EN VCC
RT9194
GND
DRI
Ccc
1uF
A VDRI
VFB
CFB
FB PGOOD
VFB = 1V for current sink at DRI
VFB = 0.6V for current source at DRI
Figure 2. DRI Source/Sink Current Test Circuit
www.richtek.com
2
DS9194-08 March 2007



Richtek Technology RT9194
www.DataSheet4U.com
Functional Pin Description
Pin Name Pin No.
Pin Function
EN 1 Chip Enable (Active High)
GND
2 Ground
FB 3 Output Voltage Feedback
PGOOD 4 Power Good Open Drain Output
DRI 5 Driver Output
VCC
6 Power Supply Input
RT9194
Function Block Diagram
VCC
PGOOD
GND
Reference 0.8V
Voltage
0.7V
3ms
Delay
+
-
Driver
EN
DRI
FB
DS9194-08 March 2007
www.richtek.com
3







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