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  Richtek Technology Electronic Components Datasheet  

RT8004 Datasheet

Synchronous Step-Down Regulator

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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
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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 RDS(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
1


  Richtek Technology Electronic Components Datasheet  

RT8004 Datasheet

Synchronous Step-Down Regulator

No Preview Available !

RT8004
VDD
PGOOD
COMP
FB
RT
SYNC
EN/SS
GND
2
3
4
5
6
7
8
16 PVDD
15 LX
14 LX
13 PGND
12 PGND
11 LX
10 LX
9 PVDD
SOP-16
Typical Application Circuit
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(TOP VIEW)
VDD
PGOOD
COMP
FB
RT
SYNC
EN/SS
GND
16
2 15
3 14
4
5
GND
13
12
6 17 11
7 10
89
PVDD
LX
LX
PGND
PGND
LX
LX
PVDD
TSSOP-16 (Exposed Pad)
47uF
VIN
2.65V to 5.5V
PGOOD
RPG
100k
CTH
1000pF
RTH
10k
R2
240k
ROCS
309k
External Clock
RSS
4.7M
CSS
470pF
VDD
RT8004
PGOOD
COMP
FB
RT
SYNC
LX
PVDD
EN/SS
PVDD
GND
PGND
R1
510k
C1
22pF
L1
1uH
VOUT
2.5V/3A
COUT
47uF
CIN1
10uF
CIN2
10uF
www.richtek.com
2
DS8004-03 September 2007


Part Number RT8004
Description Synchronous Step-Down Regulator
Maker Richtek Technology
PDF Download

RT8004 Datasheet PDF






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