RT8299 Datasheet, PDF (1/15 Pages) Richtek Technology Corporation – 3A, 24V, 500kHz Synchronous Step-Down Converter

RT8299
3A, 24V, 500kHz Synchronous Step-Down Converter
General Description
The RT8299 is a high efficiency, monolithic synchronous
step-down DC/DC converter with internal power MOSFETs.
It achieves 3A of continuous output current over a wide
input supply range from 3V to 24V with excellent load and
line regulation. Current mode operation provides fast
transient response and eases loop stabilization. Cycle-
by-cycle current limit provides protection against shorted
outputs and soft-start eliminates input current surge during
start-up. Thermal shutdown provides reliable, fault tolerant
operation. The low current shutdown mode provides output
disconnection, enabling easy power management in battery
powered systems.
Ordering Information
RT8299
Package Type
SP : SOP-8 (Exposed Pad-Option 1)
QW: WDFN-10L 3x3 (W-Type)
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
z 3V to 24V Input Voltage Range
z 3A Output Current
z Internal N-MOSFETs
z Current Mode Control
z Fixed Frequency Operation : 500kHz
z Output Adjustable from 0.8V to 15V
z Up to 95% Efficiency
z Stable with Low ESR Ceramic Output Capacitors
z Cycle-by-Cycle Over Current Protection
z Input Under Voltage Lockout
z Output Under Voltage Protection
z Thermal Shutdown Protection
z SOP-8 (Exposed Pad) and 10-Lead WDFN Packages
z RoHS Compliant and Halogen Free
Applications
z Industrial and Commercial Low Power Systems
z Computer Peripherals
z LCD Monitors and TVs
z Green Electronics/Appliances
z Point of Load Regulation for High Performance DSPs,
FPGAs, and ASICs
Pin Configurations
(TOP VIEW)
BOOT
VIN
SW
GND
8
2
7
GND
3
6
9
4
5
VCC
PGOOD
EN
FB
SOP-8 (Exposed Pad)
FB 1
PGOOD 2
EN 3
VCC ⁴
BOOT 5
10 _GND
9 _SW
8 SW
7 VIN
11 6 VIN
WDFN-10L 3x3
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8299-01 May 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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