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PDF RT9043 Data sheet ( Hoja de datos )
| Número de pieza | RT9043 | |
| Descripción | 400mA Adjustable LDO Regulator | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9043 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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RT9043
High PSRR, Low Dropout, 400mA Adjustable LDO Regulator
General Description
The RT9043 is a high-performance, 400mA LDO regulator,
offering high PSRR and low dropout. The quiescent current
is as low as 35μA, further prolonging the battery life. The
RT9043 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in handheld wireless devices.
The RT9043 consumes typical 0.7μA in shutdown mode.
The other features include low dropout voltage, high output
accuracy, current limit protection, and enable/shutdown
control. The RT9043 is available in the SOT-23-5 package.
Ordering Information
RT9043-
Package Type
B : SOT-23-5
Lead Plating System
G : Green (Halogen Free and Pb Free)
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.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
z Adjustable Output Voltage
z Enable/Shutdown Control
z Wide Operating Voltage Range : 2.2V to 5.5V
z Low Dropout : 230mV at 400mA
z Low-Noise for RF Application
z Ultra-Fast Response in Line/Load Transient
z Current Limit Protection
z High Power Supply Rejection Ratio
z Output Only 1μF Capacitor Required for Stability
z RoHS Compliant and Halogen Free
Applications
z Mega SIM Card
z CDMA/GSM Cellular Handsets
z Portable Information Appliances
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
z Mini PCI & PCI-Express Cards
z PCMCIA & New Cards
Pin Configurations
(TOP VIEW)
VOUT
FB
54
23
VIN GND EN
SOT-23-5
Typical Application Circuit
VIN
Chip Enable
1 VIN
VOUT 5
CIN
1µF
RT9043
3 EN
R3
10k
FB 4
GND 2
COUT
1µF
VOUT
R1
R2
DS9043-02 April 2011
www.richtek.com
1
Free Datasheet http://www.datasheet4u.com/
1 page  
RT9043
PSRR
0
ILOAD = 10mA, CIN = COUT = 1μF/X7R
-10
Line Transient Response
VIN = 4V to 5V, VOUT = 2.5V,
ILOAD = 1mA, COUT = 1μF/X7R
-20 VIN 5
-30 (V/Div) 4
-40
-50
-60
VOUT
(20mV/Div)
-70
-80
10
100 110K00 11000K00 1100000K00 10010M000
Frequency (Hz)
Time (50μs/Div)
VOUT
(10mV/Div)
Load Transient Response
VIN = 3.3V, VOUT = 2.5V, ILOAD = 1mA to 400mA,
CIN = COUT = 1μF/X7R
VOUT
(10mV/Div)
Load Transient Response
VIN = 3.3V, VOUT = 2.5V, ILOAD = 200mA to 400mA,
CIN = COUT = 1μF/X7R
IOUT
(200mA/Div)
Time (100μs/Div)
Power On from EN
VIN = 3.3V, VOUT = 2.5V, No Load
VEN
(5V/Div)
VOUT
(1V/Div)
Time (5μs/Div)
DS9043-02 April 2011
IOUT
(200mA/Div)
Time (100μs/Div)
Enable/Shutdown Response
VIN = 5V, VOUT = 2.5V, ILOAD = 10mA
VEN
(5V/Div)
VOUT
(1V/Div)
Time (500μs/Div)
www.richtek.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet RT9043.PDF ] | |
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