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RT8110A データシート PDF ( 特性, スペック, ピン接続図 )

部品番号 RT8110A
部品説明 Wide Input Range Synchronous Buck DC/DC PWM Controller
メーカ RICHTEK
ロゴ RICHTEK ロゴ 

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RT8110A Datasheet, RT8110A PDF,ピン配置, 機能
RT8110A
Wide Input Range Synchronous Buck DC/DC PWM
Controller
General Description
The RT8110A is a fixed-frequency PWM controller with
integrated MOSFET drivers for single power rail
synchronous single-phase buck converter. This part
features an internal regulator that allows wide input voltage
range operation. The RT8110A utilizes voltage-mode
control with internal compensation to simplify the
converter design. An internal 0.8V reference voltage allows
low output voltage application. The switching frequency
is fixed at 600kHz to reduce the external passive
component size to save board space. The RT8110A
provides under voltage protection, current limit, over current
protection and over temperature protection. The low-side
MOSFET RDS(ON) is used to sense the inductor current
for over current protection.
Ordering Information
RT8110A -
Package Type
SP : SOP-8 (Exposed Pad-Option 1)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richtek Pb-free and Green 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 10V to 23V Wide Input Voltage Range
z 0.8V Internal Reference
z Internal Soft Start
z High DC Gain Voltage Mode PWM Control
z Fixed 600kHz Switching Frequency
z Fast Transient Response
z Fully Dynamic 0 to 80% Duty Cycle
z Over Current Protection
z Under Voltage Protection
z Over Temperature Protection
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Set-top Box Power Supplies
z PC Subsystem Power Supplies
z Cable Modems, DSL Modems
z DSP and Core Communication Processor Power
Supplies
z Memory Power Supplies
z Personal Computer Peripherals
z Industrial Power Supplies
z Low Voltage Distributed Power Supplies
Pin Configurations
(TOP VIEW)
PHASE
UGATE
GND
LGATE
8
27
GND
3 96
45
BOOT
VIN
FB
VCC
SOP-8 (Exposed Pad)
DS8110A-00 May 2009
www.richtek.com
1
Free Datasheet http://www.datasheet4u.com/

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