RT8004 Datasheet, PDF (1/16 Pages) Richtek Technology Corporation – 3A, 4MHz, Synchronous Step-Down Regulator

RT8004
3A, 4MHz, Synchronous Step-Down Regulator
General Description
The RT8004 is a high efficiency synchronous, step-down
DC/DC converter. Its input voltage range is from 2.65V to
5.5V and provides an adjustable regulated output voltage
from 0.8V to 5V while delivering up to 3A 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 set by an external
resistor or can be synchronized to an external clock. 100%
duty cycle provides low dropout operation 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 RT8004 operates in Forced Continuous Mode which
reduces noise and RF interference. 100% duty cycle in
Low Dropout Operation further maximize battery life.
Ordering Information
RT8004
Package Type
S : SOP-16
CP : TSSOP-16 (Exposed Pad)
QV : VQFN-16L 4x4 (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
High Efficiency : Up to 95%
Low Quiescent Current : 100μA
Low R_DS(ON) Internal Switches : 75mΩ
Programmable Frequency : 300kHz to 4MHz
No Schottky Diode Required
0.8V Reference Allows Low Output Voltage
Low Dropout Operation : 100% Duty Cycle
Synchronizable Switching Frequency
Power Good Output Voltage Monitor
Over Temperature Protection
Thermally Enhanced SOP-16, TSSOP-16 (Exposed
Pad) and 16-Lead VQFN 4x4 Packages
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Portable Instruments
Battery-Powered Equipment
Notebook Computers
Distributed Power Systems
IP Phones
Digital Cameras
Pin Configurations
(TOP VIEW)
16 15 14 13
COMP 1
12 LX
FB 2
RT 3
SYNC 4
GND
17
11 PGND
10 PGND
9 LX
5678
VQFN-16L 4x4
DS8004-03 September 2007
www.richtek.com
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