RT9166/A
300/600mA, Ultra-Fast Transient Response LDO Regulator
General Description
Features
z Low Quiescent Current (Typically 220μA)
z Guaranteed 300/600mA Output Current
z Low Dropout Voltage : 230/580mV at 300/600mA
z Wide Operating Voltage Ranges : 3V to 5.5V
z Ultra-Fast Transient Response
The RT9166/A series are CMOS low dropout regulators
optimized for ultra-fast transient response. The devices are
capable of supplying 300mA or 600mA of output current
with a dropout voltage of 230mV or 580mV respectively.
The RT9166/A series are is optimized for CD/DVD-ROM,
CD/RW or wireless communication supply applications.
The RT9166/Aregulators are stable with output capacitors
as low as 1μF. The other features include ultra low dropout
voltage, high output accuracy, current limiting protection,
and high ripple rejection ratio.
z Tight Load and Line Regulation
z Current Limiting Protection
z Thermal Shutdown Protection
z Only Low-ESR Ceramic Capacitor Required for
Stability
z Custom Voltage Available
The devices are available in fixed output voltages range of
1.2V to 4.5V with 0.1V per step. The RT9166/A regulators
are available in 3-lead SOT-23, SOT-89, SOT-223, TO-92
and TO-252 packages.
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z CD/DVD-ROM, CD/RW
z Wireless LAN Card/Keyboard/Mouse
z Battery-Powered Equipment
z XDSL Router
Ordering Information
RT9166/A-
Package Type
VL : SOT-23-3 (L-Type)
X : SOT-89
z PCMCIA Card
XL : SOT-89 (L-Type)
G : SOT-223
Marking Information
GL : SOT-223 (L-Type)
Z : TO-92
L : TO-252
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer- Pin Configurations
cial Standard)
(TOP VIEW)
Output Voltage
12 : 1.2V
13 : 1.3V
:
45 : 4.5V
1B : 1.25V
VIN
3
1
2
GND
VOUT
SOT-23-3 (L-Type)
(RT9166)
600mA Output Current
300mA Output Current
Note :
3
VOUT
GND
VIN
RichTek Pb-free and Green products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
2
1
TO-92
(RT9166/A)
`Suitable for use in SnPb or Pb-free soldering processes.
`100%matte tin (Sn) plating.
DS9166/A-18 June 2007
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
