900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




  Richtek Technology Electronic Components Datasheet  

RT8003 Datasheet

High-Efficiency Synchronous Buck PWM Converter

No Preview Available !

RT8003
600mA, 2MHz, High-Efficiency
Synchronous Buck PWM Converter
General Description
The RT8003 is a high-efficiency synchronous buck PWM
converter with integrated P-Channel and N-Channel power
MOSFET switches. Capable of delivering 600mA output
current over a wide input voltage range of 2.4V to 5.5V,
the RT8003 is ideally suited for portable applications
powered by a single Li-Ion battery or by 3-cell NiMH/NiCd
batteries. The device operates at 2MHz PWM switching
fixed frequency, can use smaller CIN, COUT capacitor and
inductor.
The RT8003 integrates two low RDS(ON) 230mand 180m
of high- and low-side switching MOSFETs to reduce board
space, as only resistors and capacitors along with one
inductor are required externally for operation. The RT8003
has adjustable output range down to 0.5V. The other
features include internal soft-start, chip enable, over-
temperature and over-current protections. It is available in
a space-saving VDFN-10L 3x3 package.
Ordering Information
RT8003
Package Type
QV : VDFN-10L 3x3 (V-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
Note :
RichTek Pb-free 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.
100% matte tin (Sn) plating.
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Features
l 2.4V to 5.5V Input Voltage Range
l Adjustable Output from 0.5V to VIN
l Guaranteed 600mA Output Current
l Accurate Reference : 0.5V (±1.5%)
l Up to 90% Conversion Efficiency
l Typical Quiescent Current : 200µA
l Integrated Low RDS(ON) High- and Low-Side Power
MOSFET Switches: 230mand 180m
l Current Mode PWM Operation
l Fixed Frequency : 2MHz
l 100% Maximum Duty Cycle for Lowest Dropout
l Internal Soft-Start
l No Schottky Diode Required
l Over-Temperature and Over-Current Protection
l Small 10-Lead VDFN 3x3 Package
l RoHS Compliant and 100% Lead (Pb)-Free
Applications
l Battery-Powered Equipments
l Low Power CPU and DSP Supplies
l Digital Cameras and Hard Disks
l Protable Instruments and Notebook Computers
l Celluar Phones, PDAs, and Handheld PCs
l USB-Based DSL Modems and Other Network Interface
Cards
Pin Configurations
(TOP VIEW)
LX 1
VDD 2
NC 3
NC 4
EN 5
GND
10 GND
9 GND
8 GND
7 COMP
FB
VDFN-10L 3x3
DS8003-03 November 2005
www.richtek.com
1


  Richtek Technology Electronic Components Datasheet  

RT8003 Datasheet

High-Efficiency Synchronous Buck PWM Converter

No Preview Available !

RT8003
Typical Application Circuit
VIN
2.4V to 4.2V
Chip Enable
CIN 2
1uF VDD
LOUT
2.2uH
5 EN
LX 1
RT8003
7
COMP
FB 6
CCOMP
GND
10nF
8, 9, 10
R1
10k
R2
7.15k
VOUT
1.2V/600mA
COUT
1uF
Recommended component selection for Typical Application Circuit.
VOUT (V)
0.5
VIN (V)
2.4 to 3.3
CIN (uF)
1
COUT (uF) LOUT (uH)
1/2.2
2.2/1
R1 (k)
10
1 2.4 to 3.6 1
1/2.2
2.2/1
10
1.2 2.4 to 4.2
1
1/2.2
2.2/1
10
1.8 2.4 to 5.5
1
1/2.2
2.2/1
10
2.5 3.3 to 5.5
1
1/2.2
2.2/1
10
3.3 4.2 to 5.5
1
1/2.2
2.2/1
10
R2 (k)
Open
10
7.15
3.83
2.49
1.78
CCOMP (nF)
10
10
10
10
10
10
Suggested Inductors
Component
Supplier
Series
ABC
SR0302
Inductance
(µH)
1
2.2
Sumida CDRH2D14
2.2
TDK
VLP4612
1
2.5
ESR
(m)
60
90
94
110
170
Current Rating
(mA)
2100
1650
Dimensions
(mm)
3x2.8x2.5
1000
3.2x3.2x1.55
1500
1100
4.6x3.4x1.2
Suggested Capacitors For CIN and COUT
Component Supplier
Part No.
TDK
C1608X5R1A105M
C1608X5R1A225M
Panasonic
ECJ1VB0J105M
ECJ1VB0J225M
TAIYO YUDEN
JMK107BJ105M
JMK107BJ225M
Capacitance (uF)
1
2.2
1
2.2
1
2.2
Case Size
0603
0603
0603
0603
0603
0603
www.richtek.com
2
DS8003-03 November 2005


Part Number RT8003
Description High-Efficiency Synchronous Buck PWM Converter
Maker Richtek
PDF Download

RT8003 Datasheet PDF






Similar Datasheet

1 RT8003 High-Efficiency Synchronous Buck PWM Converter
Richtek
2 RT8004 Synchronous Step-Down Regulator
Richtek Technology
3 RT8005 High-Efficiency Synchronous Buck PWM Converter
Richtek
4 RT8008 High Efficiency PWM Step-Down DC/DC Converter
Richtek
5 RT8009 High Efficiency PWM Step-Down DC/DC Converter
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