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PDF RT9188 Data sheet ( Hoja de datos )
| Número de pieza | RT9188 | |
| Descripción | 100mA CMOS LDO Regulator | |
| Fabricantes | Richiek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9188 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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Preliminary
RT9188
Dual, Ultra-Low Quiescent, 100mA CMOS LDO Regulator
General Description
The RT9188 series are an efficient, precise dual-channel
CMOS LDO regulator optimized for ultra-low-quiescent
applications. Both regulator outputs are capable of
sourcing 100mA of output current.
The RT9188's performance is optimized for battery-
powered systems to deliver extremely low dropout
voltage and ultra-low quiescent current. Regulator ground
current increases only slightly in dropout, further
prolonging the battery life. The RT9188 also works with
low-ESR ceramic capacitors, reducing the amount of
board space necessary for power applications, critical in
hand-held wireless devices.
Key features include current limit, thermal shutdown,
faster transient response, ultra-low quiescent current
(typically 8µA), low dropout voltage, high output accuracy,
current limiting protection, and high ripple rejection ratio.
Available in the SOT-23-5 package, the RT9188 also offers
a range of 1.2V to 5V with 0.1V per step.
Ordering Information
RT9188-
Package Type
B : SOT-23-5
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard
Output Voltage 2
8 : 1.8V
Output Voltage 1
K : 3.0V
Other Voltage versions please
contact RichTek for detail
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.
Features
l Ultra-Low Quiescent Current (Typically 8µA)
l Low Dropout : 450mV at 100mA
l Wide Operating Voltage Ranges : 2V to 6V
l Faster Transient Response
l Tight Load and Line Regulation
l Current Limiting Protection
l Thermal Shutdown Protection
l Only 1µF Output Capacitor Required for Stability
l High Power Supply Rejection Ratio
l Custom Voltages Available
l RoHS Compliant and 100% Lead (Pb)-Free
Applications
l Cellular Phones and Pages
l Battery-Powered Equipment
l Laptop, Palmtops, Notebook Computers
l Hand-Held Instruments
l PCMCIA Card
l Wireless LAN Card/Keyboard/Mouse
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.
Pin Configurations
(TOP VIEW)
VOUT1 1 5 GND
VDD 2
NC 3 4 VOUT2
SOT-23-5
DS9188-08 March 2007
www.richtek.com
1
1 page  
Preliminary
Typical Operating Characteristics
0.8 DDrorpopoouut tVVooltltaaggee ((VVDDDD –− VVOOUUTT))
0.7
TTJJ=11225°°C
0.6
0.5
0.4
TTJJ==2255°°CC
0.3
0.2
0.1
0
0
VOUVTO=UT3=.03V.0V
20 40 60 80 100
ILOAD (mA)
500
400
300
200
100
0
0
RT9188
Short Circuit Current
TJ = 25°C
TJ = 125°C
1234
Input/Output Differential (V)
5
Temperature Stability
3.4
3.2 VOUT1
3
2.8
2.6
2.4
2.2
2 VOUT2
1.8
1.6
-35 -15 5 25 45 65 85 105 125
Temperature (°C)
Quisecent Current vs. Temperature
10
9
8
7
6
5
4
3
2
1
0
-35 -15 5 25 45 65 85 105 125
Temperature (°C)
PSRR
0
CIN = 1uF
COUT2 = 1uF Electrolytic Capacitor
-10 VDD = 5V
VOUT2 = 1.8V
-20 TA = 25°C
-30
-40
50mA
10mA
-50
-60
-70
10
100 1k 10k 100k 1M
Frequency (Hz)
PSRR
0
CIN = 1uF
-10
COUT1 = 1uF Electrolytic
VDD = 5V
VOUT1 = 3.0V
-20 TA = 25°C
-30
-40
50mA
10mA
-50
-60
-70
10
100 1k 10k 100k 1M
Frequency (Hz)
DS9188-08 March 2007
www.richtek.com
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet RT9188.PDF ] | |
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