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PDF RT9055 Data sheet ( Hoja de datos )
| Número de pieza | RT9055 | |
| Descripción | 300mA Dual LDO Regulator | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9055 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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®
RT9055
300mA Dual LDO Regulator
General Description
The RT9055 is a dual channel, low noise, and low dropout
regulator sourcing up to 300mA at each channel. The output
voltage range is from 0.9V to 3.5V with an input voltage
range from 1.5V to 5.5V.
The RT9055 offers 2% accuracy, extremely low dropout
voltage and extremely low quiescent current (only 29μA
per LDO). The shutdown current is near zero which is
suitable for battery powered applications. The RT9055 also
provides protection functions such as current limiting,
output short circuit protection, and over temperature
protection.
The RT9055 allows stable operation with very small
ceramic output capacitors, hence minimizing required
board space and component cost.
The RT9055 is available in a WL-CSP-6B 0.8x1.2 package.
Ordering Information
RT9055-
Package Type
WSC : WL-CSP-6B 0.8x1.2
Note :
Output Voltage : VOUT1/VOUT2
VOUT2 > VOUT1 is Recommended
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 Wide Operating Voltage Range : 1.5V to 5.5V
z Low Noise for RF Application
z No Noise Bypass Capacitor Required
z Fast Response in Line/Load Transient
z TTL Logic Controlled Shutdown Input
z Low Temperature Coefficient
z Dual LDO Outputs (300mA/300mA)
z Ultra-Low Quiescent Current : 29μA/LDO
z High Output Accuracy 2%
z Short Current Protection
z Thermal Shutdown Protection
z Current Limit Protection
z Short Circuit Thermal Folded Back Protection
z RoHS Compliant and Halogen Free
Applications
z Cellular Handsets
z Battery Powered Equipment
z Hand-Held Instruments
z Portable Information Appliances
Pin Configurations
(TOP VIEW)
EN1 A1 A2 VOUT1
GND B1 B2 VIN
EN2 C1 C2 VOUT2
WSC-CSP-6B 0.8x1.2
Available Voltage Version
Code
A
D
G
K
N
R
V
Y
Voltage
3.5
1.85
1.8
2.6
2.85
3.2
2.9
1.9
Code
B
E
H
L
P
S
W
U
Voltage
1.3
2.1
2
2.7
3
3.3
1.6
1.4
Code
C
F
J
M
Q
T
X
Z
Voltage
1.2
1.5
2.5
2.8
3.1
2.65
3.15
1.25
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9055-00 March 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
Free Datasheet http://www.datasheet4u.com/
1 page  
RT9055
Typical Operating Characteristics
1.22
1.21
1.20
1.19
1.18
1.17
1.16
1.15
1.14
1.13
1.12
-50
Output Voltage vs. Temperature
VIN = 3.7V, No Load
-25 0
25 50 75 100 125
Temperature (°C)
Quiescent Current vs. Temperature
80
70
60
50
40
30
20
10
0
-50
-25
VIN = 3.7V, No Load
0 25 50 75
Temperature (°C)
100 125
Dropout Voltage vs. Load Current
140
120
125°C
100
25°C
80
60 −40°C
40
20
0
0
VOUT = 3.3V
50 100 150 200 250 300
Load Current (mA)
VIN
(2V/Div)
VOUT
(20mV/Div)
Line Transient Response
VIN = 2.8V to 4.2V, ILOAD = 1mA
Time (100μs/Div)
Line Transient Response
Line Transient Response
VIN
(2V/Div)
VOUT
(20mV/Div)
VIN = 2.8V to 4.2V, ILOAD = 10mA
Time (100μs/Div)
VIN
(2V/Div)
VOUT
(20mV/Div)
VIN = 2.8V to 4.2V, ILOAD = 100mA
Time (100μs/Div)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9055-00 March 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet RT9055.PDF ] | |
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