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參數(shù)資料
| 型號(hào)： | US3033CS |
| 廠商： | Unisem Group |
| 英文描述： | PWM SWITCHER & LINEAR CONTROLLER IC |
| 中文描述： | 脈寬調(diào)制開關(guān) |
| 文件頁數(shù)： | 7/9頁 |
| 文件大小： | 79K |
| 代理商： | US3033CS |
US3033
4-7
Rev. 1.5
1/14/99
Figure4- The circuit in figure 4 is the application of the US3033 in a switching mode only. This circuit can be used to
generate a low cost 5V to 3.3V for either Pentium application with AGP socket or in Pentium II applications where it is desirable to
generate an accurate on board 3.3V supply.
TYPICAL APPLICATION
5V to 3.3V for Pentium Application with AGP or Pentium II Application without ATX power supply
Switching mode Operation.
Ref Desig
U1
Q2
Description Qty
LDO/Switcher IC
MOSFET
Part #
US3033CS ( 8 pin SOIC)
IRL3303 (TO220)
IRL3103S (TO263) (note 1)
MBR1045CT (TO220)
MBRB1545CT (TO263) (note1)
Core:T50-18,L=4 uH
Turns: 10T, 18 AWG
L=2 uH
22 ohm,5%, SMT 1206 size
10 ohm,5%, SMT 0805 size
10 ohm, 5%, SMT 1206 size
249 kohm,1%, SMT 0805 size
1 kohm,1%, SMT 0805 size
576 ohm,1%, SMT 0805 size
6MV1500GX, 1500uF,6.3V, Elect
1 uF,Ceramic, SMT 0805 size
470 pF,Ceramic, SMT 0805 size
10 pF,Ceramic, SMT 0805 size
6MV1500GX, 1500uF,6.3V, Elect
1 uF,Ceramic, SMT 0805 size
For MOSFET , 577002
For Schottky Diode , 577002
Manufacturer
Unisem
International
Rectifier
1
1
D1
Schottky Diode
1
Motorola
Micro Metal
L2
Inductor
1
(core)
L1
R1
R9
R2
R3
R4
R5
C1,2
C3
C4
C5
C7
C8
HS1
HS2
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Heat Sink
Heat Sink
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
Sanyo
Sanyo
Sanyo
Sanyo
Aavid
Aavid
Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and MBR1545CT for D2 in TO263
packages with minimum of 1" square copper pad can be used.
3033app4-1.2
Vout
5V
C1
L1
C3
Q2
C2
L2
R4
C7
D1
R2
C4
R5
R1
12V
R3
C5
C8
R9
1
2
3
4
5
6
7
8
V12
Drv1V12swVfb1Vhyst
Gnd
Vfb2
Drv2
U1
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| US3034 | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:8 PIN PWM SWITCHER CONTROLLER IC |
| US3034CS | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:8 PIN PWM SWITCHER CONTROLLER IC |
| US3036 | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:8 PIN PWM SWITCHER CONTROLLER IC |
| US3036CS | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:8 PIN PWM SWITCHER CONTROLLER IC |
| US3052EDK1 | 制造商:Renesas Electronics Corporation 功能描述:SUPPTOOL_RTE - Bulk |
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