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PDF N1153 Data sheet ( Hoja de datos )

Número de pieza N1153
Descripción 5 Bit Programmable Synchronous
Fabricantes ETC 
Logotipo ETC Logotipo



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No Preview Available ! N1153 Hoja de datos, Descripción, Manual

NIKO-SEM
5 Bit Programmable Synchronous
DC/DC Controller
N1153
GENERAL DESCRIPTION
The N1153 is a low-cost, 5 bit TTL-compatible
input, digital-to-analog (DAC) programmable,
synchronous buck converter controller design-
ed specifically to power the Pentium ® II as well
as the next generation of P6 family or other
high performance core logic in desktop person-
al computer CPU applications.
Additional features also include temperature
compensated voltage reference, triangle wave
oscillator, current limits comparator, frequency
shift over-current protection, and an access-
ible, internally compensated error amplifier,
power good signal, logic compatible shutdown,
and over voltage protection are also provide.
The N1153 operates at a fixed 200KHz, provid-
ing an optimum compromise between efficien-
cy, external component size, and cost.
FEATURES
z High performance and low cost solution
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 Power-Good output voltage monitor
z Over-Voltage and Over-Current protection
APPLICATIONS
z Powering Pentium ® II, III or Deschutes,
K6 and other advanced processor
z Multiple microprocessor supplies
z High power DC to DC controller
z Programmable power supplies
TYPICAL APPLICATION
12V
+
VID 0
VID 1
VID 2
VID 3
VID 4
P.G
S.D
D/A AND
SHUT-DOWN
LOGIC
CURRENT
LIMIT
COMPARATOR
TEMP. COMPENSATED
VOLTAGE REFERENCE
FREQUENCY SHIFT
OVER-CURRENT
PROTECTION
TRIANGLE
WAVE
OSCILLATOR
INTERNALLY
COMPENSATED
ERROR AMPLIFIER
5V
+
VCORE
+
N1153, Motherboard Power Regulation for Computers
1 AUG-03-2001

1 page




N1153 pdf
NIKO-SEM
5 Bit Programmable Synchronous
DC/DC Controller
APPLICATION CIRCUIT
N1153
5V
1000uF
+
2 uH
0.1uF
10
1000uF x 2
++
0.1uF
10K
MOSFET
P50N02L x 2
4uH
SBD
1A/30V
VID 0
VID 1
VID 2
VID 3
VID 4
P.G
OVP
12V
S.D
VCC
DH
VID 0
DL
VID 1
CS+
VID 2
CS-
VID 3
VO SENSE
VID 4 SHUTDOWN
POWERGOOD NC
OVP
PGNDH
BSTH
PGNDL
BSTL
GND
N1153
X
+
Mn-Cu Wire
10mOHM x 2
1500uF x 4
0.1uF
++++
VCORE
5 AUG-03-2001

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