RT8299
®
DS8299-04 October 2014 www.richtek.com
1
Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
©
Ordering Information
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.
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.
Applications
Industrial and Commercial Low Power Systems
Computer Peripherals
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation for High Performance DSPs,
FPGAs, and ASICs
Pin Configurations
(TOP VIEW)
SOP-8 (Exposed Pad)
Features
3V to 24V Input Voltage Range
3A Output Current
Internal N-MOSFETs
Current Mode Control
Fixed Frequency Operation : 500kHz
Output Adjustable from 0.8V to 15V
Up to 95% Efficiency
Stable with Low ESR Ceramic Output Capacitors
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Output Under Voltage Protection
Thermal Shutdown Protection
SOP-8 (Exposed Pad) and 10-Lead WDFN Packages
RoHS Compliant and Halogen Free
BOOT
VIN
SW
GND
VCC
PGOOD
FB
EN
GND
2
3
4
5
6
7
8
9
FB
PGOOD
BOOT
VCC
GND
SW
SW
VIN
VIN
EN
9
8
7
1
2
3
4
5
10
6
GND
11
WDFN-10L 3x3
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)
