RT8252A Datasheet, PDF (1/14 Pages) Richtek Technology Corporation – 2A, 23V, 340kHz Synchronous Step-Down Converter

RT8252A
2A, 23V, 340kHz Synchronous Step-Down Converter
General Description
The RT8252A 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
RT8252A'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 RT8252A also provides under
voltage protection and thermal shutdown prptection. The
low current (<3μA) shutdown mode provides output
disconnect, enabling easy power management in battery-
powered systems. The RT8252A is available in a
SOP-8 (Exposed Pad) package.
Ordering Information
RT8252A
Package Type
SP : SOP-8 (Exposed Pad-Option 1)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
H : UVP Hiccup
L : UVP Latch-Off
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
RT8252A
xGSPYMDNN
RT8252AGSP : Product Number
x : H or L
YMDNN : Date Code
Features
±1.5% High Accuracy Feedback Voltage
4.5V to 23V Input Voltage Range
2A Output Current
Integrated N-MOSFET Switches
Current Mode Control
Fixed Frequency Operation : 340kHz
Adjustable Output from 0.8V to 20V
Up to 95% Efficiency
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
GND
3
6
9
4
5
SS
EN
COMP
FB
SOP-8 (Exposed Pad)
DS8252A-02 March 2011
www.richtek.com
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