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RT8005

更新时间： 2024-11-11 03:35:43
品牌 Logo 应用领域
立锜 - RICHTEK 转换器TI的电源Demo板
页数 文件大小 规格书
11页 190K
描述
1A, 2MHz, High-Efficiency Synchronous Buck PWM Converter

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RT8005 技术参数

Status：ActiveVin (min) (V)：2.4
Vin (max) (V)：5.5Number of Outputs：1
Vout (min) (V)：0.5Vout (max) (V)：5.5
Preset Vout (V)：Output Adj. Method：Resistor
Iout (max) (A)：1Current Limit (typ) (A)：1.8
Freq (typ) (kHz)：2000Freq (min) (kHz)：
Freq (max) (kHz)：Ext Sync：No
Ron_HS (typ) (mOhm)：230Ron_LS (typ) (mOhm)：180
Iq (typ) (mA)：0.2Features：100% Duty Cycle;Current Mode Control;Enable Input;OCP;Stable with Ceramic Capacitor
Package Type：VDFN3x3-10

RT8005 数据手册

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RT8005  
1A, 2MHz, High-Efficiency Synchronous Buck PWM Converter  
General Description  
Features  
l 2.4V to 5.5V Input Voltage Range  
l Adjustable Output from 0.5V to VIN  
l Guaranteed 1A Output Current  
The RT8005 is a high-efficiency synchronous buck PWM  
converter with integrated P-Channel andN-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-cellNiMH/NiCd batteries. The  
device operates at 2MHz PWM switching fixed frequency,  
can use smaller CIN, COUT capacitor and inductor.  
l Accurate Reference : 0.5V (±1.5%)  
l Up to 90% Conversion Efficiency  
l Typical Quiescent Current : 200mA  
l Integrated Low RDS(ON) High- and Low-Side Power  
MOSFET Switches : 230mW and 180mW  
l Current Mode PWM Operation  
TheRT8005 integratestwo low RDS(ON) 230mW and 180mW  
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.  
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  
Ordering Information  
RT8005  
l Low Power CPU andDSP Supplies  
l Digital Cameras and HardDisks  
l Protable Instruments andNotebook Computers  
l Celluar Phones, PDAs, and Handheld PCs  
l USB-BasedDSL Modems and OtherNetwork Interface  
Cards  
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.  
Pin Configurations  
(TOP VIEW)  
}Suitable for use in SnPb or Pb-free soldering processes.  
}100% matte tin (Sn) plating.  
1
2
3
4
5
PGND  
PGND  
GND  
COMP  
FB  
LX  
PVDD  
PVDD  
VDD  
10  
9
8
GND  
11  
7
9
EN  
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.  
VDFN-10L 3x3  
DS8005-08 August 2007  
www.richtek.com  
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