RT8004A Datasheet, PDF (1/13 Pages) Richtek Technology Corporation – The RT8004A is a high efficiency synchronous

RT8004A
4.5A, 4MHz, Synchronous Step-Down Regulator
General Description
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.
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.
The RT8004A operates in Forced Continuous Mode which
reduces noise and RF interference. 100% duty cycle in
Low Dropout Operation further maximizes battery life.
Ordering Information
RT8004A
Package Type
CP : TSSOP-16 (Exposed Pad)
QV : VQFN-16L 4x4 (V-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Note :
Richtek 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.
Features
z High Efficiency : Up to 95%
z Low Quiescent Current : 100μA
z Low R_DS(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
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
z Digital Cameras
Marking Information
RT8004A
GCPYMDNN
RT8004AGCP : Product Number
YMDNN : Date Code
TSSOP-16 (Exposed Pad)
01=YM
DNN
01= : Product Code
YMDNN : Date Code
VQFN-16L 4x4
DS8004A-03 March 2011
www.richtek.com
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