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參數資料
| 型號： | IRU3034CSPBF |
| 廠商： | International Rectifier |
| 英文描述： | 8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING |
| 中文描述： | 8引腳的PWM開關控制器芯片，限流 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 159K |
| 代理商： | IRU3034CSPBF |
IRU3034 & (PbF)
1
www.irf.com
8-PIN PWM SWITCHER CONTROLLER IC
WITH CURRENT LIMITING
DESCRIPTION
The IRU3034 IC provides a low cost switching controller
with true short circuit protection all in a compact 8-pin
surface mount package, providing a low cost switching
solution for dual supply processor applications that re-
quire switching regulator for the 3.3V supply such as
the applications with AGP on-board. Typically in these
applications, a dual supply regulator converts 5V to 3.3V
for I/O supply and a jumper programmable supply of
1.25V to 3.5V for Core supply. The IC uses an internal
regulator generated from the 12V supply to power the
controller as well as the 12V supply to drive the power
MOSFET, allowing a low cost N-channel MOSFET to be
used. The IC also includes an error comparator for fast
transient response, a precise voltage reference for set-
ting the output voltage as well as a direct drive of the
MOSFET for the minimum part count.
TYPICAL APPLICATION
Figure 1 - Typical application of IRU3034.
Data Sheet No. PD94148 revA
Notes:
P55C, Pentium II are trademarks of Intel Corp. K5 & K6 are trademarks of AMD corp. Cyrix 6X86L, M1, M2 are trademarks of Cyrix
Corp. Power PC is trademark of IBM Corp.
V
OUT
5V
C1
L1
C3
Q2
C2
L2
R4
C7
D1
R2
C4
R5
R1
12V
R3
C5
C8
IRU3034
R8
R6
C6
R7
Drv
V
12
V
FB
V
HYST
Gnd
CS-
CS+
SS
FEATURES
8-Pin SOIC switching controller with
HICCUP current limiting reduces diode power
dissipation to less than 1% of normal operation
Soft-Start capacitor allows for smooth output
voltage ramp up
On-Board MOSFET Driver
Fastest transient response of any controller
method. (0 to 100% Duty Cycle in 100ns)
1% Internal Voltage Reference
Internal Under-Voltage Lockout protects MOSFET
during start-up
APPLICATIONS
Dual supply low voltage processor applications,
such as: P55C
, CYRIX M2
, POWER PC
and AMD K6
Simple 5V to 3.3V switcher for Pentium with AGP
or Pentium II
applications
PACKAGE ORDER INFORMATION
T
A
(°C) Basic Device Leadfree Device Package
Parts per Parts per T & R
Tube Reel Orientation
0 To 70 IRU3034CS IRU3034CS(PbF) 8-Pin Plastic SOIC(S) 95 2500 see
Fig. A
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| IRU3034PBF | 8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| IRU3034CSTR | 功能描述:IC CNTRL PWM SYNC SWITCH 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 標準包裝:2,000 系列:- 應用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數:2 輸出電壓:最低可調至 1.2V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應商設備封裝:30-TSSOP 包裝:帶卷 (TR) |
| IRU3034PBF | 制造商:IRF 制造商全稱:International Rectifier 功能描述:8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING |
| IRU3037 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:8-PIN SYNCHRONOUS PWM CONTROLLER |
| IRU3037A | 制造商:IRF 制造商全稱:International Rectifier 功能描述:8-PIN SYNCHRONOUS PWM CONTROLLER |
| IRU3037ACF | 功能描述:IC REG CTRLR BUCK PWM VM 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數:1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
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