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RT8004A PDF预览

RT8004A

更新时间: 2024-11-11 20:10:51
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
13页 308K
描述
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RT8004A 技术参数

Status:ActiveVin (min) (V):2.7
Vin (max) (V):5.5Number of Outputs:1
Vout (min) (V):0.8Vout (max) (V):5
Preset Vout (V):Output Adj. Method:Resistor
Iout (max) (A):4.5Current Limit (typ) (A):5.5
Freq (typ) (kHz):1000Freq (min) (kHz):300
Freq (max) (kHz):4000Ext Sync:Yes
Ron_HS (typ) (mOhm):75Ron_LS (typ) (mOhm):69
Iq (typ) (mA):0.4Features:100% Duty Cycle;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Enable Input;External Synchronization;OCP;Power Good;Selectable (PSM or PWM);Stable with Ceramic Capacitor;UVP
Package Type:VQFN4x4-16;TSSOP-16(PP)

RT8004A 数据手册

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RT8004A  
4.5A, 4MHz, Synchronous Step-Down Regulator  
General Description  
Features  
z High Efficiency : Up to 95%  
The RT8004A is a high efficiency synchronous, step-down  
DC/DC converter. With an input voltage range is from 2.7V  
to 5.5V, it can provide adjustable regulated output voltage  
from 0.8V to 5V while delivering up to 4.5A of output  
current.  
z Low Quiescent Current : 100μA  
z Low RDS(ON) Internal Switches : 75mΩ  
z Programmable Frequency : 300kHz to 4MHz  
z No Schottky Diode Required  
z 0.8V Reference Allows Low Output Voltage  
z Low Dropout Operation : 100% Duty Cycle  
z Synchronizable Switching Frequency  
z Power Good Output Voltage Monitor  
z Over Temperature Protection  
The internal power switch with 75mΩ on-resistance  
increases efficiency and eliminates the need for an external  
Schottky diode. Switching frequency is either set by an  
external resistor or synchronized to an external clock.  
100% duty cycle provides low dropout operation, hence  
extending battery life in portable systems. External  
compensation allows the transient response to be  
optimized over a wide range of loads and output capacitors.  
z RoHS Compliant and 100% Lead (Pb)-Free  
Applications  
z Portable Instruments  
z Battery-Powered Equipment  
z Notebook Computers  
z Distributed Power Systems  
z IP Phones  
The RT8004A operates in Forced Continuous Mode which  
reduces noise and RF interference. 100% duty cycle in  
LowDropout Operation further maximizes battery life.  
Ordering Information  
z Digital Cameras  
RT8004A  
Package Type  
CP : TSSOP-16 (Exposed Pad)  
QV : VQFN-16L 4x4 (V-Type)  
Marking Information  
RT8004AGCP : Product Number  
RT8004A  
GCPYMDNN  
YMDNN : Date Code  
Lead Plating System  
P : Pb Free  
G : Green (Halogen Free and Pb Free)  
TSSOP-16 (Exposed Pad)  
Note :  
Richtek products are :  
01= : Product Code  
YMDNN : Date Code  
` 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.  
01=YM  
DNN  
VQFN-16L 4x4  
DS8004A-03 March 2011  
www.richtek.com  
1

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