RT8004
3A, 4MHz, Synchronous Step-Down Regulator
General Description
Features
ꢀ High Efficiency : Up to 95%
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.
ꢀ Low Quiescent Current : 100μA
ꢀ Low RDS(ON) Internal Switches : 75mΩ
ꢀ Programmable Frequency : 300kHz to 4MHz
ꢀ No Schottky Diode Required
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.
ꢀ 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
The RT8004 operates in Forced Continuous Mode which
reduces noise and RF interference. 100% duty cycle in
LowDropout Operation further maximize battery life.
Applications
ꢀ Portable Instruments
ꢀ Battery-Powered Equipment
ꢀ Notebook Computers
ꢀ Distributed Power Systems
ꢀ IP Phones
Ordering Information
RT8004
Package Type
S : SOP-16
ꢀ Digital Cameras
CP : TSSOP-16 (Exposed Pad)
QV : VQFN-16L 4x4 (V-Type)
Pin Configurations
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
(TOP VIEW)
Note :
ꢀ
Richtek Pb-free and Green products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
14
16 15
13
LX
COMP
FB
12
11
10
9
1
2
3
4
PGND
PGND
LX
GND
17
RT
`Suitable for use in SnPb or Pb-free soldering processes.
`100% matte tin (Sn) plating.
SYNC
5
6 7 8
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.
VQFN-16L 4x4
DS8004-03 September 2007
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
