参数资料
| 型号： | IRU3034CS |
| 厂商： | International Rectifier |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | IC CTRL/REG PWM SWITCH 8-SOIC |
| 标准包装： | 95 |
| 应用： | 控制器，Intel Pentium?，II，P55C |
| 输入电压： | 12V |
| 输出数： | 1 |
| 输出电压： | 2 V ~ 3.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1384 (CN2011-ZH PDF) |
| 其它名称： | *IRU3034CS IRU3034-CS IRU3034-CS-ND |
IRU3034 & (PbF)
PIN DESCRIPTIONS
PIN # PIN SYMBOL
PIN DESCRIPTION
1
2
3
4
5
6
7
8
Drv
V 12
V FB
V HYST
Gnd
CS-
CS+
SS
The PWM output of the switching controller. This pin is a totem pole drive that is con-
nected to the gate of the power MOSFET. A resistor may be placed from this pin to the
gate in order to reduce switching noise.
This pin supplies the voltage to the PWM drive and hysteresis circuitry and it is connected
to the 12V supply. A 1 μ F, high frequency capacitor must be connected from this pin to
ground to provide the peak current for charging and discharging of the MOSFET.
A resistor divider from this pin to the output of the switching regulator and ground sets the
Core supply voltage.
A resistor and a 10pF capacitor is connected from this pin to the V FB pin to set the output
ripple voltage for the switching regulator.
This pin is connected to the IC substrate and must be connected to the lowest potential in
the system.
This pin is connected to the minus side of the external current sense resistor. An internal
current source together with an external resistor in series with this pin programs the
current limit threshold voltage. This voltage divided by the external current sense resistor
sets the current limit threshold.
This pin is connected to the plus side of the external current sense resistor. A resistor in
series with this pin and a capacitor connected between this pin and pin 6 provides a high
frequency filtering for the noise spikes of turn on and turn off switching.
This pin provides the soft-start for the regulator during power up. It also sets a long off time
when the converter goes into current limiting, providing low duty cycle for the catch diode
allowing it to survive during short circuit.
BLOCK DIAGRAM
V 12
2
V HYST
4
V FB
3
5V Reg
Drv
1
UVLO
PWM Control
R
1.25V
V REF
20uA
CS-
6
CS+
Gnd
5
S.S. / Hiccup
Control
3R
7
SS
8
Figure 2 - Simplified block diagram of the IRU3034.
www.irf.com
3
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PDF描述 |
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| IRU3037ACFTRPBF | IC REG CTRLR BUCK PWM VM 8-TSSOP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRU3034CSPBF | 制造商:International Rectifier 功能描述:PWM CONTROLLER SMD 3034 SOIC8 |
| IRU3034CSTR | 功能描述:IC CNTRL PWM SYNC SWITCH 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器，DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:30-TSSOP 包装:带卷 (TR) |
| IRU3034PBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING |
| IRU3037 | 制造商:IRF 制造商全称:International Rectifier 功能描述:8-PIN SYNCHRONOUS PWM CONTROLLER |
| IRU3037A | 制造商:IRF 制造商全称:International Rectifier 功能描述:8-PIN SYNCHRONOUS PWM CONTROLLER |
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