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PDF RT9181 Data sheet ( Hoja de datos )
| Número de pieza | RT9181 | |
| Descripción | 150mA LDO Regulator | |
| Fabricantes | Richiek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9181 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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RT9181
150mA LDO Regulator with PGOOD
General Description
The RT9181 is a low dropout voltage regulator with an
output 2% accuracy and supply a continuous 150mA
current within operating range from a +3V to +5.5V input.
The power good function monitors the output voltage
and indicates by pulling low the power good output (open
drain).
The RT9181 requires a small output capacitor with low
ESR for stabilizing output voltage. The device also
minimizes output overshoot during power up.
The RT9181 uses an internal PMOS as the pass device,
which consumes 160μA supply current independent of
load and dropout conditions. The EN pin controls the
output and consumes no input bias current. Other
features include current limiting, over temperature
protection, and under voltage lockout.
Features
z Low Dropout Voltage Regulator
z Up to 150mA Output Current
z Power Good (PGOOD) Function
z Chip Enable/Shutdown Function
z Load Independent, Low Quiescent Current, 160μA
z Current Limiting and Thermal Protection
z Under Voltage Lockout (UVLO)
z Low Variation Due to Load and Line Regulation
z Output Stable with Low ESR Capacitors
z SOT-23-5 Package
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Processor Power-Up Sequencing
z Laptop, Notebook, and Palmtop Computers
Ordering Information
RT9181-
Pin Configurations
(TOP VIEW)
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
Default : 1.2V
18 : 1.8V
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.
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.
VIN 1 5 VOUT
GND 2
EN 3 4 PGOOD
SOT-23-5
Typical Application Circuit
VIN CIN
1uF
1 VIN PGOOD 4
Chip Enable 3 EN VOUT 5
GND
2
10K
PGOOD
VOUT
COUT
1uF
DS9181-14 March 2007
www.richtek.com
1
1 page  
Typical Operating Characteristics
1.210
Output Voltage vs. Temperature
1.205
1.200
1.195
1.190
-20
400
VIN = 5V
IOUT = 0.1mA
0 20 40 60
Temperature (°C)
80
Current Limit vs. Temperature
350
300
250
200
-20
VIN = 5V
0 20 40 60
Temperature (°C)
80
Quiescent Current vs. Supply Voltage
180
175
170
165
160
155
150
3.0 3.5 4.0 4.5 5.0 5.5 6.0
Supply Voltage (V)
DS9181-14 March 2007
RT9181
1.210
Output Voltage vs. Supply Voltage
1.205
1.200
1.195
1.190
IOUT = 0.1mA
3.0 3.5 4.0 4.5 5.0 5.5 6.0
Supply Voltage (V)
Current Limit vs. Supply Voltage
400
350
300
250
200
3
3.5 4 4.5 5 5.5
Supply Voltage (V)
6
Quiescent Current vs. Temperature
180
175
170
165
160
155
150
-20
VIN = 5V
0 20 40 60
Temperature (°C)
80
www.richtek.com
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet RT9181.PDF ] | |
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