RT8284 Datasheet, PDF (1/15 Pages) Richtek Technology Corporation – 2A, 23V, 340kHz Synchronous Step-Down Converter

RT8284
2A, 23V, 340kHz Synchronous Step-Down Converter
General Description
The RT8284 is a high efficiency, monolithic synchronous
step-down DC/DC converter that can deliver up to 2A output
current from a 4.5V to 23V input supply. The RT8284's
current mode architecture and external compensation
allow the transient response to be optimized over a wide
range of loads and output capacitors. Cycle-by-cycle
current limit provides protection against shorted outputs
and soft-start eliminates input current surge during start-
up. The RT8284 also provides under voltage protection
and thermal shutdown protection. The low current (< 3μA)
shutdown mode provides output disconnect, enabling easy
power management in battery powered systems. The
RT8284 is a available in a SOP-8 and SOP-8
(Exposed Pad) package.
Ordering Information
RT8284
Package Type
S : SOP-8
SP: SOP-8(Exposed Pad-Option 1)
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
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.
Marking Information
RT8284GS
RT8284
GSYMDNN
RT8284GS : Product Number
YMDNN : Date Code
RT8284GSP
RT8284
GSPYMDNN
RT8284GSP : Product Number
YMDNN : Date Code
Features
±1.5% High Accuracy Feedback Voltage
Input Voltage Range : 4.5V to 23V
2A Output Current
Integrated N-MOSFETs
Current Mode Control
340kHz Fixed Frequency Operation
Output Adjustable Voltage Range : 0.923V to 20V
Efficiency Up to 95%
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Output Under Voltage Protection
Thermal Shutdown Protection
RoHS Compliant and Halogen Free
Applications
Wireless AP/Router
Set-Top-Box
Industrial and Commercial Low Power Systems
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation of High-Performance DSPs
Pin Configurations
(TOP VIEW)
BOOT
VIN
SW
GND
8
2
7
3
6
4
5
SOP-8
SS
EN
COMP
FB
BOOT
VIN
SW
GND
8
2
7
GND
3
6
9
4
5
SS
EN
COMP
FB
SOP-8 (Exposed Pad)
DS8284-01 March 2011
www.richtek.com
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