參數(shù)資料
型號(hào): N1164
廠商: Electronic Theatre Controls, Inc.
英文描述: 5 Bit Programmable Synchronous Buck Converter with Dual LDOs Controller
中文描述: 5位可編程同步降壓轉(zhuǎn)換器與雙LDO控制器
文件頁(yè)數(shù): 1/8頁(yè)
文件大小: 93K
代理商: N1164
GENERAL DESCRIPTION
1
5 Bit Programmable Synchronous Buck
Converter with Dual LDOs Controller
NIKO-SEM
N1164
AUG-03-2001
The N1164 is a 5 bit TTL-compatible input,
digital-to-analog (DAC) programmable, syn-
chronous buck converter with dual LDOs
controller designed specifically to power the
Pentium
II as well as the next generation of
P6 family or other high performance core
logic in desktop personal computer and file
servers CPU applications.
The N1164 switching section provides pro-
grammability of output voltage from 1.3V to
2.05V in 50mV steps and 2.0V to 3.5V in 100
mV increments and the linear sections use
external N-Channel power MOSFETs to
provide fixed output voltages of 1.5V for GTL
bus and 2.5V for clock.
The N1164 monitors all the output voltages.
A signal Power-Good signal is issued when
the core is within
±
15% of the DAC setting.
Additional features are built-in over-voltage,
over-current protections for the core output
and logic compatible shutdown.
FEATURES
z
Synchronous operation with high efficiency
z
TTL-compatible 5 bit DAC, output voltage
selection from 1.3V to 3.5V programmable
z
High current totem pole output, up to 2 A
for direct driving of the external N-Channel
power MOSFETs.
z
200 KHz fixed frequency internal oscillator
z
Fast transient response
z
Provides 2 regulated voltages, 1.5V and
2.5V for linear section
z
Power-Good output voltage monitor
z
Over-Voltage and Over-Current protection
z
Logic level enable input
z
High performance and low cost solution
APPLICATIONS
z
Powering Pentium
II, III or Deschutes,
K6 and other advanced processor
z
High power DC to DC controller with triple
output supplies
TYPICAL APPLICATION
N1164, Motherboard Power Regulation for Computers
5V
3.3V
12V
ENABLE
VID 0~4
POWER-GOOD
+
+
+
+
+
+
VCORE
N1164
LINEAR
SECTION
SWITCHING
SECTION
1.5V
GTC BUS
2.5V
CLOCK
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