US2076CM Ver la hoja de datos (PDF) - Unisem
Número de pieza
componentes Descripción
Lista de partido
US2076CM Datasheet PDF : 4 Pages
| |||
US2076
TYPICAL APPLICATION
5V
2076app2-1.2
Vin 7
Vout 6
Vfb2 5
U1
Gnd 4
Vfb1 3
V12 2
Drv 1
12V
C3
L1
C1
D2
R1
C2
Q2
R6
R7
L2
R4A
R4B
I/O
C6
5V
R8
CPU
Vcc2 Det
Core
C7
C4
R2 D1
R5A R5B R5C R5D R5E
JP1 1
3
5
7
2
4
6
8
Figure2- Typical application of US2076 in a flexible motherboard with the 4 bit VID output voltage selection. This circuit
uses a single jumper that programs the output voltage in 16 steps with 0.1V steps from 2V to 3.5V, designed for Intel P55™,P54™,
AMD K5 & K6™ as well as Cyrix M1™ and M2™ applications. The Vcc2Det pin automatically shuts down the I/O when a single plane
processor is dropped in the socket.
Ref Desig Description
U1
LDO/Switcher IC
Q1
MOSFET
D1
Schottky Diode
D2
Diode, GP
L2
Inductor
L1
R1
R2
R4A
R4B
R5A
R5B
R5C
R5D
R5E
R6
R7
R8
C3
C1
C4
C2
C6
C7
HS1
HS2
HS3
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Heat Sink
Heat Sink
Heat Sink
Qty
Part #
1 US2076CT (TO220)
US2076CM (TO263) (note 1)
1 IRL3303 (TO220)
IRL3103S (TO263) (note 1)
1 MBR1045CT (TO220)
MBRB1545CT (TO263) (note1)
1 1N4148
1 Core:T50-18,L=4 uH
Turns: 10T, 18 AWG
1 L=2 uH
1 22 ohm,5%, SMT 1206 size
1 10 ohm, 5%, SMT 1206 size
1 806 ohm,1%, SMT 0805 size
1 90.9 kohm,1%, SMT 0805 size
1 1.24 kohm,1%, SMT 0805 size
1 2.49 kohm,1%, SMT 0805 size
1 4.99 kohm,1%, SMT 0805 size
1 10 kohm,1%, SMT 0805 size
1 1.30 kohm,1%, SMT 0805 size
1 ohm,1%, SMT 0805 size
1 ohm,1%, SMT 0805 size
1 10 kohm,5%, SMT 0805 size
1 1 uF,Ceramic, SMT 0805 size, Z5U
1 EEUFA1A681L, 680uF,10V, Elect
1 470pF,Ceramic, SMT 0805 size
1 6MV1500GX, 1500uF,6.3V, Elect
1 EEUFA1A681L, 680uF,10V, Elect
4 6MV1500GX, 1500uF,6.3V, Elect
1 For MOSFET , 577002
1 For Schottky Diode , 577002
1 For US2076 , 507222 (I/O Load Current<5A)
576602 (I/O Load Current< 3.5A)
Manufacturer
Unisem
International
Rectifier
Motorola
Micro Metal
(core)
Panasonic
Sanyo
Panasonic
Sanyo
Aavid
Aavid
Aavid
Note 1: For the applications where it is desirable to eliminate the heat sink, the US2076CM for U1 when load current is
less than 1.5A, the IRL3103S for Q2 and MBR1545CT for D1 in TO263 packages with minimum of 1" square copper pad
can be used.
4-4
Rev. 1.3
4/26/98
Share Link: 