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Richtek - Ultra Low Dropout Regulator

Numéro de référence RT9035
Description Ultra Low Dropout Regulator
Fabricant Richtek 
Logo Richtek 





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RT9035 fiche technique
RT9035
3A, Ultra Low Dropout Regulator
General Description
The RT9035 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. It
operates with a VIN as low as 1V and VDD voltage 3V with
programmable output voltage as low as 0.8V. The RT9035
features ultra low dropout that is ideal for applications
where VOUT is very close to VIN. 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 RT9035 provides a power
good signal to indicate if the voltage level of VOUT reaches
90% of its rating value. The RT9035 is available in the
WQFN-20L 4x4 package with 1.05V, 1.2V, 1.5V, 1.8V and
2.5V internally preset outputs that are also adjustable by
using external resistors.
Features
z Maximum 3A Low-Dropout Voltage Regulator
z High Accuracy Output Voltage 2%
z Dropout Voltage Typical 270mV at 3A
z Power Good Output
z Output Voltage Pull Low Resistance when Disable
z Thermal and Over Current Protection
z RoHS Compliant and Halogen Free
Applications
z Note Book PC Applications
z Motherboard Applications
Pin Configurations
(TOP VIEW)
Ordering Information
RT9035-
Package Type
QW : WQFN-20L 4x4 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
Output Voltage
1K : 1.05V/Adj
12 : 1.2V/Adj
15 : 1.5V/Adj
18 : 1.8V/Adj
25 : 2.5V/Adj
Note :
20 19 18 17 16
NC 1
15 NC
GND
NC
NC
PGOOD
2
3
4
5
GND
21
14 NC
13 NC
12 NC
11 VDD
6 7 8 9 10
WQFN-20L 4x4
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
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.
DS9035-02 March 2011
www.richtek.com
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