PinoutSpecificationsOutput Current300 mAOutput Min1.3, 1.2, 2.8, 1.5 VoltInput Min Voltage1.65 VoltInput Max Voltage3.6 VoltDropout Voltage0.075 VoltAdjustable OutputNoQuiescent Current0.05 mAOn/Off PinYesError FlagNoRegTypeLDOTemperature Min-40 deg CTemperature Max125 deg CSpecial FeaturesLow Inp...
LP3991: PinoutSpecificationsOutput Current300 mAOutput Min1.3, 1.2, 2.8, 1.5 VoltInput Min Voltage1.65 VoltInput Max Voltage3.6 VoltDropout Voltage0.075 VoltAdjustable OutputNoQuiescent Current0.05 mAOn/Off...
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Output Current | 300 mA |
Output Min | 1.3, 1.2, 2.8, 1.5 Volt |
Input Min Voltage | 1.65 Volt |
Input Max Voltage | 3.6 Volt |
Dropout Voltage | 0.075 Volt |
Adjustable Output | No |
Quiescent Current | 0.05 mA |
On/Off Pin | Yes |
Error Flag | No |
RegType | LDO |
Temperature Min | -40 deg C |
Temperature Max | 125 deg C |
Special Features | Low Input Voltage |
Output Voltage | 1.3, 1.2, 2.8, 1.5 Volt |
Output Max | 1.3, 1.2, 2.8, 1.5 Volt |
PowerWise | Yes |
View Using Catalog |
Operating from a minimum input voltage of 1.65V, the LP3991 regulator has been designed to provide fixed stable output voltages for load currents up to 300mA. This device is suitable where accurate, low voltages are required from low input voltage sources and is therefore suitable for post regulation of switched mode regulators. In such applications, significant improvements in performance and EMI can be realized, with little reduction in overall efficiency. The LP3991 will provide fixed outputs as low as 1.2V from a wide input range of 1.65V to 4.0V Using the enable pin, the device may be controlled to provide a shutdown state, in which negligible supply current is drawn.
The LP3991 is designed to be stable with space saving ceramic capacitors as small as 0402 case size.
Performance is specified for a -40°C to 125°C junction temperature range.
For output voltage options please contact your local NSC sales office.
Reliability Metrics
Part Number | Process | EFR Reject | EFR Sample Size | PPM | LTA Rejects | LTA Device Hours | FITS | MTTF (Hours) |
LP3991TL-0.8 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-1.2 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-1.3 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-1.5 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-1.55 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-1.7 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-1.8 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-2.0 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-2.5 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-2.8 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TL-3.0 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-0.8 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-1.2 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-1.3 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-1.5 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-1.55 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-1.7 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-1.8 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-2.0 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-2.5 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-2.8 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
LP3991TLX-3.0 | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104 |
Design Tools
Title | Size in Kbytes | Date | |||
How to Solve for LDO Regulator-Enabled Glitch | View |
If you have trouble printing or viewing PDF file(s), see Printing Problems. |
Application Notes
Title | Size in Kbytes | Date | |
AN-1416: Application Note 1416 LP3991TL micro SMD Evaluation Board Information | 1212 Kbytes | 11-Mar-07 | Download |
AN-1416 (Chinese): Application Note 1416 LP3991TL micro SMD Evaluation Board Information |
210 Kbytes | 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
If you have trouble printing or viewing PDF file(s), see Printing Problems. |
More Application Notes
Title | Size in Kbytes | Date | |
AN-1342: Application Note 1342 LP3994 microSMD Evaluation Board Information | 79 Kbytes | 13-Oct-04 | Download |
AN-1377: Application Note 1377 LP3996 / LP5996 Application Board Information | 514 Kbytes | 3-Nov-06 | Download |
AN-1377 (Chinese): Application Note 1377 LP3996 / LP5996 Application Board Information |
232 Kbytes | 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
If you have trouble printing or viewing PDF file(s), see Printing Problems. |