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参数资料
| 型号： | IRU1075CP |
| 厂商： | International Rectifier |
| 文件页数： | 3/9页 |
| 文件大小： | 0K |
| 描述： | IC CONV PENTIUM P55C 3-UTHINPAK |
| 标准包装： | 80 |
| 应用： | 转换器，Intel Pentium?，P55C |
| 输入电压： | 2.55 V ~ 7 V |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 5.5 V |
| 工作温度： | 0°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-252-4（3 引线 + 接片） |
| 供应商设备封装： | 3-Ultra Thin-Pak? |
| 包装： | 管件 |
| 其它名称： | *IRU1075CP IRU1075-CP IRU1075-CP-ND |
IRU1075
PIN DESCRIPTIONS
PIN # PIN SYMBOL
PIN DESCRIPTION
1
2
3
Adj
V OUT
V IN
A resistor divider from this pin to the V OUT pin and ground sets the output voltage.
The output of the regulator. A minimum of 10 m F capacitor must be connected from this pin
to ground to insure stability.
The input pin of the regulator. Typically a large storage capacitor is connected from this
pin to ground to insure that the input voltage does not sag below the minimum drop out
voltage during the load transient response. This pin must always be 1.3V higher than V OUT
in order for the device to regulate properly.
BLOCK DIAGRAM
V IN 3
+
2 V OUT
1.25V
CURRENT
LIMIT
THERMAL
SHUTDOWN
Figure 2 - Simplified block diagram of the IRU1075.
APPLICATION INFORMATION
Introduction
+
1 Adj
The IRU1075 adjustable Low Dropout (LDO) regulator
is a three-terminal device which can easily be pro-
grammed with the addition of two external resistors to
any voltages within the range of 1.25 to 5.5 V. This regu-
lator unlike the first generation of the three-terminal regu-
lators such as LM117 that required 3V differential be-
tween the input and the regulated output, only needs
1.3V differential to maintain output regulation. This is a
key requirement for today’s microprocessors that need
typically 3.3V supply and are often generated from the
5V supply. Another major requirement of these micro-
processors such as the Intel P54C ? is the need to switch
the load current from zero to several amps in tens of
nanoseconds at the processor pins, which translates to
an approximately 300 to 500ns current step at the regu-
lator. In addition, the output voltage tolerances are also
extremely tight and they include the transient response
as part of the specification. For example Intel VRE ?
specification calls for a total of ± 100mV including initial
tolerance, load regulation and 0 to 4.6A load step.
The IRU1075 is specifically designed to meet the fast
current transient needs as well as providing an accurate
initial voltage, reducing the overall system cost with the
need for fewer output capacitors.
Rev. 1.2
08/01/02
www.irf.com
3
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| IRU1075CPTR | 功能描述:IC CONV PENTIUM P55C 3-UTHINPAK RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| IRU1075CT | 功能描述:IC CONV PENTIUM P55C TO220-3 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| IRU1117 | 制造商:IRF 制造商全称:International Rectifier 功能描述:800mA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR |
| IRU1117-18 | 制造商:IRF 制造商全称:International Rectifier 功能描述:800mA LOW DROPOUT POSITIVE FIXED 1.8V REGULATOR |
| IRU1117-18CD | 功能描述:IC REG LDO 1.8V .8A TO-252 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:4V 输入电压:最高 16V 电压 - 压降（标准）:0.28V @ 150mA 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:5-VFBGA 供应商设备封装:5-uSMD 包装:Digi-Reel® 其它名称:LP2985AIBP-4.0DKR |
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