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RT8100GQV Datasheet

  • RT8100GQV

  • Synchronous buck PWM DC/DC with Dual Voltage Control Mode

  • 18頁

  • RICHTEK   RICHTEK

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Preliminary
RT8100
Synchronous buck PWM DC/DC with Dual Voltage Control Mode
General Description
The RT8100 is an advanced DC/DC synchronous buck PWM
controller with several innovative functions for specific
customer鈥?s ASIC only. The part features RichTek鈥?s
innovative design and topology say
鈥渁nalogous
current
mode鈥?for current sensing and full functions for various
applications including adjustable soft start, free-run and
adjustable operation frequency and enable; the part is with
design of 12V+12V boot strapped driver which is capable
to drive up to 20Amp output current; moreover the part is
with implementation of accuracy DCR current sensing
topology. There are several specific features implemented
and reserved for the specific customer鈥?s special
applications including dual V
CORE
control mode including
tracking and stand-alone mode, and output current
indication. The part is proposed with a small footprint of
VQFN-16L 3x3 package.
Features
Analogous Current Mode Design
2.5V to 12V Switching Source Power
0.8V to 3.3V Output Voltage Regulation
Adjustable V
IN
Feed-Forward Ramp Slope
Adjustable Operation Frequency
Precise Core Voltage Regulation
Precise DCR Current Sensing with High Quality
Capacitor, X7R
鹵
1.5% System Accuracy
Input Voltage : 12V and 5V Bias
Enable Function
RoHS Compliant and 100% Lead (Pb)-Free
Over Current Protection
External Soft Start Setting
Operation Frequency up to 1.0MHz
Dual Mode Voltage Control
Tracking Mode
Stand-Alone Mode
Output Current Indication
16-Lead VQFN Package
Ordering Information
RT8100
Package Type
QV : VQFN-16L 3x3 (V-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Applications
MB memory and chipset core power
Middle-high graphic card GPU and memory core power
General-purpose fields including server, NB, bare-bone
and mini-system
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.
100% matte tin (Sn) plating.
Pin Configurations
(TOP VIEW)
UGATE
PHASE
12VCC
BOOT
16 15 14 13
5VSB
1
RT
2
I_IND
3
RR
4
5
6
12
LGATE
PVCC
SS
PI
GND
17
7
8
11
10
9
COMP
VQFN-16L 3X3
DS8100-03 August 2007
CSN
CSP
FB
www.richtek.com
1

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