RT9166/A
Preliminary
1
DS9166/A-09 October 2004
www.richtek.com
Pin Configurations
300/600mA, Ultra-Fast Transient Response LDO Regulator
Ordering Information
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.
General Description
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/A regulators are stable with output capacitors
as low as 1
µF. The other features include ultra low dropout
voltage, high output accuracy, current limiting protection,
and high ripple rejection ratio.
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 and TO-92
packages.
Features
Low Quiescent Current (Typically 220
µµµµµA)
Guaranteed 300/600mA Output Current
Low Dropout Voltage: 230/580mV at 300/600mA
Wide Operating Voltage Ranges: 3V to 5.5V
Ultra-Fast Transient Response
Tight Load and Line Regulation
Current Limiting Protection
Thermal Shutdown Protection
Only low-ESR Ceramic Capacitor Required for
Stability
Custom Voltage Available
Applications
CD/DVD-ROM, CD/RW
Wireless LAN Card/Keyboard/Mouse
Battery-Powered Equipment
XDSL Router
PCMCIA Card
(TOP VIEW)
1
2
3
VIN
GND
VOUT
TO-92
(RT9166/A)
12
3
GND
VOUT
VIN
SOT-23 (L-Type)
(RT9166)
12
3
GND
(TAB)
VIN
VOUT
SOT-89
SOT-89 (L-Type)
12
3
GND
VIN
(TAB)
VOUT
SOT-223
1
23
GND
(TAB)
VIN
VOUT
SOT-223 (L-Type)
1
2
3
GND
VIN
(TAB)
VOUT
RT9166/A -
Package Type
VL : SOT-23 (L-Type)
X : SOT-89
XL : SOT-89 (L-Type)
G : SOT-223
GL : SOT-223 (L-Type)
Z : TO-92
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
Output Voltage
12 : 1.2V
13 : 1.3V
:
45 : 4.5V
600mA Output Current
300mA Output Current
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