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SI9181DQ-15-T1 |SI9181DQ15T1VISHAYN/a150avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-15-T1 |SI9181DQ15T1SILICONN/a836avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-18-T1 |SI9181DQ18T1SILICONIN/a2447avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-25-T1 |SI9181DQ25T1VISHAYN/a3000avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-30-T1 |SI9181DQ30T1SILICONIXN/a2707avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-33-T1 |SI9181DQ33T1SILICONIXN/a157avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-50-T1 |SI9181DQ50T1SILICONIXN/a3000avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-AD-T1 |SI9181DQADT1SILICONIXN/a5491avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
SI9181DQ-AD-T1-E3 |SI9181DQADT1E3VISHAYN/a21000avaiMicropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset


SI9181DQ-AD-T1-E3 ,Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Resetapplications, a 0.01-F or larger ceramic capacitor should be connected from this pin1 CNOISEto gro ..
SI9182DH-15-T1 ,Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-ResetFEATURES Low 105-mV Dropout at 250-mA Load  Fixed 1.215-V, 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V,2.85 ..
SI9182DH-18-T1 ,Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-ResetAbsolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, ..
SI9182DH-18-T1 ,Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-ResetAPPLICATIONS Only 100-V(rms) Noise With Noise BypassCapacitor Cellular Phones 1-A Maximum Shut ..
SI9182DH-25-T1 ,Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-ResetS-41221—Rev. F, 28-Jun-044Si9182Vishay SiliconixORDERING INFORMATIONStandard Lead (Pb)-Free Tempera ..
SI9182DH-285-T1 ,Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-ResetFEATURES Low 105-mV Dropout at 250-mA Load  Fixed 1.215-V, 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V,2.85 ..
SM15T200CA ,TRANSILFEATURESn PEAK PULSE POWER : 1500 W (10/1000μs)n BREAKDOWN VOLTAGE RANGE :From 6.8 V to 220 Vn UNI ..
SM15T220A ,TRANSILFEATURESn PEAK PULSE POWER : 1500 W (10/1000μs)n BREAKDOWN VOLTAGE RANGE :From 6.8 V to 220 Vn UNI ..
SM15T220CA ,TRANSILSM15T6V8A/220A®SM15T6V8CA/220CATMTRANSIL
SM15T22A ,TRANSZORB SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSORABSOLUTE MAXIMUM RATINGS (T = 25°C)ambSymbol Parameter Value UnitP Peak pulse power dissipation (se ..
SM15T22CA ,TRANSILFEATURESn PEAK PULSE POWER : 1500 W (10/1000μs)n BREAKDOWN VOLTAGE RANGE :From 6.8 V to 220 Vn UNI ..
SM15T24A ,TRANSZORB SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSORSM15T6V8A/220A®SM15T6V8CA/220CATMTRANSIL


SI9181DQ-15-T1-SI9181DQ-18-T1-SI9181DQ-25-T1-SI9181DQ-30-T1-SI9181DQ-33-T1-SI9181DQ-50-T1-SI9181DQ-AD-T1-SI9181DQ-AD-T1-E3
Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
Si9181
Vishay Siliconix
Micropower 350-mA CMOS LDO RegulatorWith Error Flag/Power-On-Reset

FEATURES Low 150-mV Dropout at 350-mA Load Guaranteed 350-mA Output Current 600-mA Peak Output Current Capability Uses Low ESR Ceramic Output Capacitor Fast Load and Line Transient Response Only 100-�V(rms) Noise With Noise BypassCapacitor 1-�A Maximum Shutdown Current Built-in Short Circuit and Thermal Protection Out-Of-Regulation Error Flag (Power Good or POR) Fixed 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 2.85-V, 2.9 V,3.0-V, 3.3-V, 5.0-V, or Adjustable Output VoltageOptions Other Output Voltages Available by Special Order
APPLICATIONS Cellular Phones Laptop and Palm Computers PDA, Digital Still Cameras
DESCRIPTION
The Si9181 is a 350-mA CMOS LDO (low dropout) voltage
regulator. The device features ultra low ground current anddropout voltage to prolong battery life in portable electronics.
The Si9181 offers line/load transient response and ripplerejection superior to that of bipolar or BiCMOS LDO regulators.
The device is designed to maintain regulation while delivering600-mA peak current. This is useful for systems that have high
surge current upon turn-on. The Si9181 is designed to drivethe lower cost ceramic, as well as tantalum, output capacitors.The device is guaranteed stable from maximum load current
down to 0-mA load. In addition, an external noise bypass
capacitor connected to the device’s CNOISE pin will lower the
LDO’s output noise for low noise applications.
The Si9181 also includes an out-of-regulation error flag. Whenthe output voltage is 5% below its nominal output voltage, the
error flag output goes low. If a capacitor is connected to thedevice’s delay pin, the error flag output pin will generate adelayed power-on-reset signal.
The Si9181 is available in both standard and lead (Pb)-free
packages.
FIGURE 1.
Fixed Output FIGURE 2. Adjustable Output
GND
VIN
2.2 �F 2.2 �F
VOUT
Si9181

GND
VIN
2.2 �F 2.2 �F
VOUT
Si9181
18
GND
VIN
2.2 �F 2.2 �F
VOUT
Si9181

POR
ON/OFF
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