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PDF RT9042 Data sheet ( Hoja de datos )
| Número de pieza | RT9042 | |
| Descripción | Ultra Low Dropout Regulator | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9042 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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RT9042
Maximum 3A, Ultra Low Dropout Regulator
General Description
Features
The RT9042 is a high performance positive voltage regulator
designed for use in applications requiring very low Input
voltage and extremely low dropout voltage at up to
3A(Peak). It operates with a VIN as low as 1V and VDD
voltage 3V with programmable output voltage as low as
0.8V. The RT9042 features ultra low dropout that is ideal
for applications where VOUT is very close to VIN.
l Maximum 3A Low Dropout Voltage Regulator
l High Accuracy Output Voltage 2%
l Dropout Voltage Typical 230mV at 2A
l Power Good Output
l Output Voltage Pull Low Resistance when Disable
l Thermal and Over Current Protection
l RoHS Compliant and Halogen Free
Additionally, it has an enable pin to further reduce power
dissipation while shutdown and provides excellent
regulation over variations in line, load and temperature.
The RT9042 provides a power good signal to indicate if
the voltage level of Vo reaches 90% of its rating value.
Applications
l Notebook PC Applications
l Motherboard Applications
The RT9042 is available in the SOP-8 and SOP-8 (Exposed
Pad) package with 1.05V, 1.2V, 1.5V, 1.8V and 2.5V
Pin Configurations
internally preset outputs that are also adjustable by using
external resistors.
Ordering Information
RT9042
(TOP VIEW)
PGOOD
EN
VIN
VDD
2
3
4
8 GND
7 ADJ
6 VOUT
5 NC
Package Type
S : SOP-8
SP : SOP-8 (Exposed Pad-Option 1)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
SOP-8
PGOOD
EN
VIN
VDD
8
27
GND
3 96
45
GND
ADJ
VOUT
NC
Output Voltage
1K : 1.05V/Adj
12 : 1.2V/Adj
15 : 1.5V/Adj
18 : 1.8V/Adj
25 : 2.5V/Adj
SOP-8 (Exposed Pad)
Note :
Richtek 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.
DS9042-02 March 2011
www.richtek.com
1
1 page  
Typical Operating Characteristics
Load Transient Response
VOUT
(20mV/Div)
VOUT
(20mV/Div)
RT9042
Load Transient Response
IOUT
(1A/Div)
VDD = 5V, VIN = 1.8V, VOUT = 1.2V ADJ
Time (2.5ms/Div)
IOUT
(1A/Div)
VDD = 5V, VIN = 3.3V, VOUT = 2.5V FIX
Time (2.5ms/Div)
VIN Line Transient Response
VIN 3
(1V/Div)
2
VIN 4
(1V/Div) 3
VIN Line Transient Response
VOUT
(50mV/Div)
VDD = 5V, VOUT = 1.2V ADJ, IOUT = 0A
Time (250μs/Div)
VDD Line Transient Response
VOUT
(50mV/Div)
VDD = 5V, VOUT = 2.5V FIX, IOUT = 0A
Time (250μs/Div)
VDD Line Transient Response
5
VDD
(1V/Div) 4
5
VDD
(1V/Div) 4
VOUT
(20mV/Div)
VIN = 1.8V, VOUT = 1.2V ADJ, IOUT = 0A
Time (250μs/Div)
VOUT
(20mV/Div)
VIN = 3.3V, VOUT = 2.5V FIX, IOUT = 0A
Time (250μs/Div)
DS9042-02 March 2011
www.richtek.com
5
5 Page 
Outline Dimension
A
JB
H
M
RT9042
F
C
I
D
Symbol
A
B
C
D
F
H
I
J
M
Dimensions In Millimeters
Min Max
4.801
3.810
5.004
3.988
1.346
1.753
0.330
0.508
1.194
1.346
0.170
0.254
0.050
0.254
5.791
6.200
0.400
1.270
Dimensions In Inches
Min Max
0.189
0.150
0.197
0.157
0.053
0.069
0.013
0.020
0.047
0.053
0.007
0.010
0.002
0.010
0.228
0.244
0.016
0.050
8-Lead SOP Plastic Package
DS9042-02 March 2011
www.richtek.com
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet RT9042.PDF ] | |
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