参数资料
| 型号： | MIC35152WD TR |
| 厂商： | Micrel Inc |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1.5A TO-252-5 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.24 V ~ 5.4 V |
| 输入电压： | 2.25 V ~ 6 V |
| 电压 - 压降（标准）： | 0.365V @ 1.5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1.5A（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-252-6，DPak（5 引线 + 接片） |
| 供应商设备封装： | TO-252-5 |
| 包装： | 标准包装 |
| 其它名称： | 576-3613-6 |
R1 = R2 × ? ? OUT ? 1 ? ?
Micrel, Inc.
Input Capacitor
An input capacitor of 1.0μF or greater is recommended
when the device is more than 4 inches away from the
bulk and supply capacitance, or when the supply is a
battery. Small, surface-mount chip capacitors can be
used for the bypassing. The capacitor should be place
within 1” of the device for optimal performance. Larger
values will help to improve ripple rejection by bypassing
the input to the regulator, further improving the integrity
of the output voltage.
Transient Response and 3.3V to 2.5V, 2.5V to 1.8V or
1.65V, or 2.5V to 1.5V Conversions
The MIC35152 has excellent transient response to
variations in input voltage and load current. The device
has been designed to respond quickly to load current
variations and input voltage variations. Large output
capacitors are not required to obtain this performance. A
standard 10μF tantalum capacitor is all that is required.
Larger values help to improve performance even further.
By virtue of its low dropout voltage, this device does not
saturate into dropout as readily as similar NPN-based
designs. When converting from 3.3V to 2.5V, 2.5V to
1.8V or 1.65V, or 2.5V to 1.5V, the NPN-based
regulators are already operating in dropout, with typical
dropout requirements of 1.2V or greater. To convert
down to 2.5V without operating in dropout, NPN-based
regulators require an input voltage of 3.7V at the very
least. The MIC35152 regulator will provide excellent
performance with an input as low as 3.0V or 2.25V,
respectively. This gives the PNP-based regulators a
distinct advantage over older, NPN-based linear
regulators.
Minimum Load Current
The MIC35152 regulator is speci ? ed between ? nite
loads. If the output current is too small, leakage currents
load current is necessary for proper operation.
MIC35152
dominate and the output voltage rises. A 10mA minimum
Enable Input
The MIC35152 also features an enable input for on/off
control of the device. Its shutdown state draws “zero”
current (only microamperes of leakage). The enable
input is TTL/CMOS compatible for simple logic interface,
but can be connected to up to V IN . When enabled, it
draws approximately 15μA.
Adjustable Regulator Design
Figure 1. Adjustable Regulator with Resistors
The MIC35152 allows programming the output voltage
anywhere between 1.24V and the 5.4V. Two resistors
are used. The resistor values are calculated by:
? V ?
? 1.240 ?
Where V OUT is the desired output voltage. Figure 1
shows component de ? nition. Applications with widely
varying load currents may scale the resistors to draw the
minimum load current required for proper operation (see
above).
October 2009
7
M9999-102309-A
相关PDF资料 |
PDF描述 |
|---|---|
| MIC35302WD TR | IC REG LDO ADJ 3A TO-252-5 |
| MIC37101-2.5YM | IC REG LDO 2.5V 1A 8-SOIC |
| MIC37110-1.8YS TR | IC REG LDO 1.8V 1A SOT223-3 |
| MIC37139-2.5YS TR | IC REG LDO 2.5V 1.5A SOT-223 |
| MIC37150-1.8WR | IC REG LDO 1.8V 1.5A S-PAK-3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC-3521 | 制造商:ADVANTECH 制造商全称:Advantech Co., Ltd. 功能描述:3U CompactPCI Pentium M 2.0G High performance Controller |
| MIC35302 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3A, Low Voltage μCap LDO Regulator |
| MIC35302WD | 制造商:Micrel Inc 功能描述:IC LDO 3A UCAP 5TO252 制造商:Micrel Inc 功能描述:IC, LDO, 3A, UCAP, 5TO252 制造商:Micrel Inc 功能描述:IC, LDO, 3A, UCAP, 5TO252; Primary Input Voltage:6V; Dropout Voltage Vdo:370mV; Voltage Regulator Case Style:TO-252; No. of Pins:5; Output Current:3A; Operating Temperature Min:-40C; Operating Temperature Max:125C; SVHC:No SVHC ;RoHS Compliant: Yes |
| MIC35302WD TR | 功能描述:低压差稳压器 - LDO 3A, Adjustable VOUT CAP LDO in a D-PAK RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC35302WD-TR | 功能描述:Linear Voltage Regulator IC Positive Adjustable 1 Output 1.24 V ~ 5.4 V 3A TO-252-5 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:有效 稳压器拓扑:正，可调式 电压 - 输出:1.24 V ~ 5.4 V 电流 - 输出:3A 电压 - 跌落（典型值）:0.37V @ 3A 稳压器数:1 电压 - 输入:2.25 V ~ 6 V 电流 - 限制（最小值）:3.5A 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-252-6，DPak（5 引线 + 接片） 供应商器件封装:TO-252-5 标准包装:1 |
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