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PDF RT8005 Data sheet ( Hoja de datos )
| Número de pieza | RT8005 | |
| Descripción | High-Efficiency Synchronous Buck PWM Converter | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT8005 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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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
www.DataSshienegtl4eUL.ci-oImon 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 RT8005 integrates two low RDS(ON) 230mΩ and 180mΩ
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.
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.
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 1A 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 : 230mΩ and 180mΩ
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
PVDD 2
PVDD 3
VDD 4
EN 5
GND
11
10 PGND
9 PGND
8 GND
7 COMP
FB
VDFN-10L 3x3
DS8005-08 August 2007
www.richtek.com
1
1 page  
RT8005
Parameter
Symbol
Test Conditions
Min Typ Max Units
Logic Input
Logic-Low Voltage VIL
EN Threshold
Logic-High Voltage VIH
Protection
VDD = 2.4V to 5.5V, Shutdown
VDD = 2.4V to 5.5V, Enable
-- -- 0.4
1.5 --
--
V
Thermal Shutdown Temperature TSD
Thermal Shutdown Hysteresis ∆TSD
-- 180 --
-- 20 --
°C
°C
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
www.DataSheet4U.com
stress ratings. 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 for extended
periods may remain possibility to affect device reliability.
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θJA is measured in the natural convection at TA = 25°C on a high effective thermal conductivity test board of
JEDEC 51-7 thermal measurement standard.
DS8005-08 August 2007
www.richtek.com
5
5 Page 
Outline Dimension
RT8005
D
www.DataSheet4U.com
A
D2
L
E
e
A3
A1
E2
SEE DETAIL A
1
b
21
21
DETAIL A
Pin #1 ID and Tie Bar Mark Options
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Symbol
A
A1
A3
b
D
D2
E
E2
e
L
Dimensions In Millimeters
Min Max
0.800
1.000
0.000
0.050
0.175
0.250
0.180
0.300
2.950
3.050
2.300
2.650
2.950
3.050
1.500
1.750
0.500
0.350
0.450
Dimensions In Inches
Min Max
0.031
0.039
0.000
0.002
0.007
0.010
0.007
0.012
0.116
0.120
0.091
0.104
0.116
0.120
0.059
0.069
0.020
0.014
0.018
V-Type 10L DFN 3x3 Package
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
DS8005-08 August 2007
Richtek Technology Corporation
Taipei Office (Marketing)
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)89191466 Fax: (8862)89191465
Email: [email protected]
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT8005.PDF ] | |
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