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RT8005GQV Datasheet

  • RT8005GQV

  • 1A, 2MHz, High-Efficiency Synchronous Buck PWM Converter

  • 11頁

  • RICHTEK   RICHTEK

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RT8005
1A, 2MHz, High-Efficiency Synchronous Buck PWM Converter
General Description
The RT8005 is a high-efficiency synchronous buck PWM
converter with integrated P-Channel and N-Channel power
MOSFET switches. Capable of delivering 1A output current
over a wide input voltage range of 2.4V to 5.5V, the RT8005
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 C
IN
, C
OUT
capacitor and inductor.
The RT8005 integrates two low R
DS(ON)
230m鈩?and 180m鈩?/div>
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 RT8005
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.
Features
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2.4V to 5.5V Input Voltage Range
Adjustable Output from 0.5V to V
IN
Guaranteed 1A Output Current
Accurate Reference : 0.5V (鹵1.5%)
Up to 90% Conversion Efficiency
Typical Quiescent Current : 200碌A(chǔ)
Integrated Low R
DS(ON)
High- and Low-Side Power
MOSFET Switches : 230m鈩?and 180m鈩?/div>
Current Mode PWM Operation
Fixed Frequency : 2MHz
100% Maximum Duty Cycle for Lowest Dropout
Internal Soft-Start
No Schottky Diode Required
Over-Temperature and Over-Current Protection
Small 10-Lead VDFN 3x3 Package
RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT8005
Package Type
QV : VDFN-10L 3x3 (V-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richtek Pb-free and Green 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.
Applications
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Battery-Powered Equipments
Low Power CPU and DSP Supplies
Digital Cameras and Hard Disks
Protable Instruments and Notebook Computers
Celluar Phones, PDAs, and Handheld PCs
USB-Based DSL Modems and Other Network Interface
Cards
Pin Configurations
(TOP VIEW)
LX
PVDD
PVDD
VDD
EN
1
2
3
4
5
10
9
8
7
9
GND
11
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.
PGND
PGND
GND
COMP
FB
VDFN-10L 3x3
DS8005-08 August 2007
www.richtek.com
1

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