900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




  Richtek Technology Electronic Components Datasheet  

RT9035 Datasheet

Ultra Low Dropout Regulator

No Preview Available !

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
1


  Richtek Technology Electronic Components Datasheet  

RT9035 Datasheet

Ultra Low Dropout Regulator

No Preview Available !

RT9035
Typical Application Circuit
VIN VIN VOUT
10µF
RT9035
Chip Enable
VDD
EN ADJ
VDD PGOOD
GND
1µF
100k
VOUT
Figure 1. Fixed Voltage Regulator
VOUT
10µF
VOUT
=
0.8 ×
R1+ R2
R2
VIN VIN VOUT
VOUT
10µF RT9035
CDummy R1
10µF
Chip Enable
VDD
EN ADJ
VDD PGOOD
GND
1µF
100k
R2
VOUT
Figure 2. Adjustable Voltage Regulator
Functional Pin Description
Pin No.
Pin Name
Pin Function
1, 3, 4, 6, 12, 13,
NC
14, 15, 20
No Internal Connection.
2,
GND
21 (Exposed Pad)
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
5
7
8, 9, 10
11
16, 17, 18
19
PGOOD
EN
VIN
VDD
VOUT
ADJ
Power Good Open Drain Output.
Chip Enable (Active High). Internal pull low.
Supply Input Voltage.
Supply Voltage of Control Circuit.
Output Voltage.
Set the output voltage by an external feedback resistor divider. If the ADJ pin is
grounded, the output voltage will be set by internal feedback resistor divider.
Function Block Diagram
VIN
EN
VDD
OCP
OTP
Error
Amplifier
POR 0.8V
0.72V
Mode
-
+
VOUT
SD
ADJ
PGOOD
GND
www.richtek.com
2
DS9035-02 March 2011


Part Number RT9035
Description Ultra Low Dropout Regulator
Maker Richtek
PDF Download

RT9035 Datasheet PDF






Similar Datasheet

1 RT9030 Low Noise UltraFast Without Bypass Capacitor CMOS LDO Regulator
Richtek
2 RT9032 Programmable Dual Output Linear Regulator
Richtek
3 RT9033 3A Adjustable Output Voltage LDO Regulator
Richtek
4 RT9035 Ultra Low Dropout Regulator
Richtek
5 RT9037 Ultra-Fast CMOS LDO Regulator
Richtek





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy