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PDF RT9059 Data sheet ( Hoja de datos )
| Número de pieza | RT9059 | |
| Descripción | Ultra-Low Dropout Voltage Regulator | |
| Fabricantes | Richtek | |
| Logotipo |  |
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®
RT9059
3A, Ultra-Low Dropout Voltage Regulator
General Description
The RT9059 is a high performance positive voltage regulator
designed for use in applications requiring very low input
voltage and very low dropout voltage at up to 3A. It operates
with a VIN as low as 1V and VDD voltage 3V with
programmable output voltage as low as 0.8V. The RT9059
features ultra low dropout, ideal for applications where
VOUT is very close to VIN. Additionally, it has an enable
pin to further reduce power dissipation while shutdown.
The RT9059 provides excellent regulation over variations
in line, load and temperature. The RT9059 provides a power
good signal to indicate if the voltage level of VO reaches
90% of its rating value.
Features
Output Current up to 3A
High Accuracy ADJ Voltage 1.5%
Dropout Voltage 350mV @ 3A Typically
VOUT Power Good Signal
VOUT Pull Low Resistance when Disable
Current Limiting Protection
Thermal Shutdown Protection
RoHS Compliant and Halogen Free
Applications
Notebook PC Applications
Motherboard Applications
Ordering Information
Pin Configurations
RT9059(- )
(TOP VIEW)
Package Type
SP: SOP-8 (Exposed Pad-Option 1)
QW : WDFN-10L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
None : Adjustable Output
Fixed Output Voltage Code
15 : 1.5V
18 : 1.8V
25 : 2.5V
Note :
Richtek products are :
PGOOD
EN
VIN
VDD
8
27
GND
36
9
45
GND
ADJ/NC
VOUT
NC
SOP-8 (Exposed Pad)
VOUT 1
VOUT 2
VOUT 3
ADJ/NC 4
PGOOD 5
10 VDD
9 VIN
8 VIN
7 VIN
11 6 EN
RoHS compliant and compatible with the current require-
WDFN-10L 3x3
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.
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9059-08 April 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT9059
Parameter
Symbol
Test Conditions
Reference Voltage
Fixed Output Voltage
Accuracy
VOUT Load Regulation
OUT Line Regulation
VREF
VLOAD
VLINE
IOUT = 1mA to 3A,
VIN = VOUT+1V
VDD = 3.6V to 5.5V,
VIN = VOUT+1V to 5V, IOUT = 1mA
Dropout Voltage
VDROP
Current Limit
ILIM
Short Circuit Current
ISC
VOUT Pull Low Resistance RPULL
Thermal Shutdown
Temperature
TSD
Thermal Shutdown Recovery
Temperature
TSDR
IOUT = 2A
IOUT = 3A
VIN = 3.6V
VOUT < 0.2V
VEN = 0V
PGOOD Rising Threshold
PGOOD Hysteresis
PGOOD Delay Time
VTH_PGOOD VOUT Rising
VTH_PGOOD VOUT Falling
PGOOD Sink Capability
VPGOOD
ISINK = 10mA
EN Input
Voltage
Logic-High
Logic-Low
EN Delay Time
VIH
VIL
EN Pin Bias Current
VDD Pin Shutdown Current
VIN Pin Shutdown Current
Inrush Current
Soft-Start Time
IEN
ISHDN_VDD
ISHDN_VIN
IINRUSH
tSS
VEN = 5V
VEN = 0V
VEN = 0V, VIN = 5V
VOUT = 1.8V, COUT = 10F,
ILoad = 1A
Min Typ Max Unit
0.788 0.8 0.812 V
1.5 -- 1.5 %
-- 0.5 1
%
-- 0.2 0.6 %
-- 250 350
mV
-- 350 450
3.1 3.6 4.2 A
1 1.4 1.8 A
-- 150 --
-- 160 --
ºC
-- 90 -- ºC
-- 90 --
-- 10 --
-- 1 1.5
-- 0.2 0.4
1.2 --
--
-- -- 0.4
0.3 0.85 1.4
-- 12 --
-- -- 1
-- -- 1
%
%
ms
V
V
ms
A
A
A
-- 0.5 --
A
1.9 2.8 3.75 ms
Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θJC is
measured at the exposed pad of the package.
Note 3. Devices are ESD sensitive. Handling precaution recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9059-08 April 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
EXPOSED THERMAL PAD
(Bottom of Package)
J
A
Y
XB
H
M
RT9059
F
Symbol
A
B
C
D
F
H
I
J
M
Option 1
Option 2
X
Y
X
Y
C
I
D
Dimensions In Millimeters Dimensions In Inches
Min
4.801
Max
5.004
Min
0.189
Max
0.197
3.810
1.346
0.330
4.000
1.753
0.510
0.150
0.053
0.013
0.157
0.069
0.020
1.194
0.170
1.346
0.254
0.047
0.007
0.053
0.010
0.000
0.152
0.000
0.006
5.791
0.406
6.200
1.270
0.228
0.016
0.244
0.050
2.000
2.000
2.300
2.300
0.079
0.079
0.091
0.091
2.100
2.500
0.083
0.098
3.000
3.500
0.118
0.138
8-Lead SOP (Exposed Pad) Plastic Package
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9059-08 April 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet RT9059.PDF ] | |
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