RT8294 Datasheet, PDF (1/15 Pages) Richtek Technology Corporation – 2A, 23V, 340kHz Synchronous Step-Down Converter

RT8294
2A, 23V, 340kHz Synchronous Step-Down Converter
General Description
The RT8294 is a high efficiency, monolithic synchronous
step-downDC/DC converter that can deliver up to 2A output
current from a 4.5V to 23V input supply. The RT8294'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 RT8294 also provides under voltage protection
and thermal shutdown protection. The low current (< 3µA)
shutdown mode provides output disconnection, enabling
easy power management in battery-powered systems. The
RT8294 is available in SOP-8 and SOP-8 (Exposed Pad)
packages.
Ordering Information
RT8294
Package Type
S : SOP-8
SP: SOP-8(Exposed Pad-Option 1)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
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
l ±1.5% High Accuracy Feedback Voltage
l Input Voltage Range : 4.5V to 23V
l 2A Output Current
l Integrated N-MOSFETs
l Current Mode Control
l 340kHz Fixed Frequency Operation
l Output Adjustable Voltage Range : 0.923V to 20V
l Efficiency Up to 95%
l Programmable Soft-Start
l Stable with Low ESR Ceramic Output Capacitors
l Cycle-by Cycle Over Current Protection
l Input Under Voltage Lockout
l Output Under Voltage Protection
l Thermal Shutdown Protection
l RoHS Compliant and Halogen Free
Applications
l Wireless AP/Router
l Set-Top-Box
l Industrial and Commercial Low Power Systems
l LCD Monitors and TVs
l Green Electronics/Appliances
l 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)
DS8294-02 March 2011
www.richtek.com
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