Features: Miniature 8-I/O micro SMD package
Stable with 1µF ceramic and high quality tantalumoutput capacitors
Fast turn-on
Two independent regulators
Logic controlled enable
Over current and thermal protectionApplication CDMA cellular handsets
GSM cellular handsets
Portable information appliances
Portable battery applicationsSpecifications
| Input Min Voltage |
2.5 Volt |
| Input Max Voltage |
6 Volt |
| Channels |
2 Channels |
| Output Accuracy |
3 % |
| Output1 VoutMin |
3.0, 2.85, 2.5, 2.8, 3.1 Volt |
| Output1 VoutMax |
3.0, 2.85, 2.5, 2.8, 3.1 Volt |
| Output1 IoutMax |
300 mA |
| Output1 Topology |
LDO |
| Output2 VoutMin |
3.0, 2.85, 2.8, 3.1 Volt |
| Output2 VoutMax |
3.0, 2.85, 2.8, 3.1 Volt |
| Output2 IoutMax |
150 mA |
| Output2 Topology |
LDO |
| Dropout Voltage |
0.06 Volt |
| Quiescent Current |
0.115 mA |
| On/Off Pin |
Yes |
| Error Flag |
No |
| Power on Reset |
No |
| Ceramic Capacitors Stable |
Yes |
| Output Range |
2.5V, 3.1V, 3.0V, 2.8V, 2.5V, 2.8V, 2.85V |
| Temperature Min |
-40 deg C |
| Temperature Max |
125 deg C |
| Topology |
LDO Dual |
| Multiple Output Capability |
Yes |
| RegType |
LDO |
| Step-Down |
Yes |
| Adjustable Output |
No |
| View Using Catalog |
VIN,VEN −0.3 to 6.5V
VOUT −0.3 to (VIN+0.3V) 6.5V
Junction Temperature 150˚C
Storage Temperature −65˚C to +150˚C
Pad Temp. (Note 3) 235˚C
Maximum Power Dissipation
(Note 4) 364mW
ESD Rating (Note 5)
Human Body Model2kV
Machine Model 200VDescriptionThe LP3986 is a 150 mA dual low dropout regulator designed for portable and wireless applications with demanding performance and board space requirements.
The LP3986 is stable with a small 1 µF ±30% ceramic output capacitor requiring smallest possible board space.
The LP3986's performance is optimized for battery powered systems to deliver ultra low noise, extremely low dropout voltage and low quiescent current independent of load current. Regulator ground current increases very slightly in dropout, further prolonging the battery life. Optional external bypass capacitor reduces the output noise further without slowing down the load transient response. Fast start-up time is achieved by utilizing a speed-up circuit that actively pre-charges the bypass capacitor. Power supply rejection is better than 60 dB at low frequencies and 55 dB at 10 kHz. High power supply rejection is maintained at low input voltage levels common to battery operated circuits.
The LP3986 is available in a micro SMD package. Performance is specified for a −40°C to +125°C temperature range. For single LDO applications, please refer to the LP3985 datasheet.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LP3986TL-2518 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-2525 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-2528 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-2626 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-2818 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-2828 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-285285 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-2929 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-3028 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-3030 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-3131 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-3133 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TL-3333 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2518 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2525 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2528 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2626 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2818 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2828 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-2929 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-3028 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-3030 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-3131 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-3133 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX-3333 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP3986TLX285285 |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1228: Application Note 1228 LP3986 microSMD Evaluation Board Instruction |
29 Kbytes |
14-May-04 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1219: Application Note 1219 LP3985 MicroSMD‐5 Evaluation Board Instruction |
36 Kbytes |
10-May-04 |
Download |
| AN-1223: Application Note 1228 LP3986 microSMD Evaluation Board Instruction |
29 Kbytes |
14-May-04 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
The LP3986 is a 150 mA dual low dropout regulator de-signed for portable and wireless applications with demand-ing performance and board space requirements.
The LP3986 is stable with a small 1 µF ±30% ceramic outputcapacitor requiring smallest possible board space.
The LP3986's performance is optimized for battery poweredsystems to deliver ultra low noise, extremely low dropoutvoltage and low quiescent current independent of load cur-rent. Regulator ground current increases very slightly indropout, further prolonging the battery life. Optional externalbypass capacitor reduces the output noise further withou slowing down the load transient response. Fast start-up timeis achieved by utilizing a speed-up circuit that actively pre-charges the bypass capacitor. Power supply rejection isbetter than 60 dB at low frequencies and 55 dB at 10 kHz.High power supply rejection is maintained at low input volt-age levels common to battery operated circuits.
The LP3986 is available in a micro SMD package. Perfor-mance is specified for a −40˚C to +125˚C temperaturerange. For single LDO applications, please refer to theLP3985 datasheet.
LP3986 Data Sheet
