
RT9006A/B
1
DS9006A/B-05 September 2007
www.richtek.com
Pin Configurations
Ordering Information
RT9006A/B
Features
z
Low Quiescent Current (Typically 70
μ
A)
z
Wide Operating Voltage Ranges : 2.8V to 5.5V for
RT9006A
z
Wide Operating Voltage Ranges : 2.5V to 5.5V for
RT9006B
z
Ultra-Fast Transient Response
z
Tight Load and Line Regulation
z
Current Limiting Protection
z
Thermal Shutdown Protection
z
Only low-ESR Ceramic Capacitors Required for
Stability
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
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.
Dual LDO Regulator with Reset Function
General Description
The RT9006A/B is an efficient, precise dual-channel CMOS
LDO regulator optimized for ultra-low-quiescent
applications. Regulators output1 and output2 are capable
of sourcing 300mA and 500mA of output current.
The RT9006
’
s performance is optimized for CD/DVD-ROM
and CD/RW a supply applications.
The RT9006A/B regulators are stable with output capacitors
as low as 1
μ
F, including current limit, thermal shutdown
protection, fast transient response, low dropout voltage,
high output accuracy, current limiting protection, and high
ripple rejection ratio. The RT9006A/B contains a reset
circuit to detect VOUT2 voltage.
The RT9006A/B regulators are available in used
SOP-8
(Exposed Pad) surface mount package.
(TOP VIEW)
SOP-8 (Exposed Pad)
Typical Application Circuit
VIN1
VOUT1
VIN2
VOUT2
GND
CT
RST
C1
1uF
C2
1uF
V
5V
C3
1uF
C
CT
C4
1uF
V
OUT1
V
OUT2
RT9006A/B
V
5V
R
RST
Package Type
SP : SOP-8 (Exposed Pad-Option 2)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Operating Frequency Version
A : V
OUT1
= 1.8V, V
OUT2
= 3.3V
B : V
OUT1
= 1.5V, V
OUT2
= 3.3V
VOUT1
VIN1
VIN2
VOUT2
GND
GND
CT
GND
2
3
4
5
6
7
8
9
RST