MAX8878:Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout

SOT23 Regulator Saves Space

The MAX8877/MAX8878 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. These devices are pin-compatible with the industry-standard '2982 and offer an improved dropout voltage. Typical output noise is 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 1.5V to 5.0V, in 100mV increments. Designed with an internal P-channel MOSFET pass transistor, the MAX8877/MAX8878 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8878 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 package.

Key Features
  • Pin-Compatible with the Industry-Standard '2982
  • Low Output Noise: 30µVRMS
  • Low 55mV Dropout at 50mA Output (165mV at 150mA output)
  • Low 85µA No-Load Supply Current
  • Low 100µA Operating Supply Current (even in dropout)
  • Thermal-Overload and Short-Circuit Protection
  • Reverse Battery Protection
  • Output Current Limit
  • Preset Output Voltages (±1.4% Accuracy)
  • 10nA Logic-Controlled Shutdown
MAX8877, MAX8878: Typical Operating Circuit
MAX8877, MAX8878: Typical Operating Circuit
Applications/Uses
  • Audio Systems
  • Cordless Phones
  • Electronic Planners
  • Handheld Instruments (PDAs, Palmtops)
  • Modems
  • Palmtop Computers
  • PCMCIA Cards
  • PCS Telephones
DataSheet
titleDownload file
MAX8877-MAX8878 Data SheetMAX8877-MAX8878.pdf
Parametrics
Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Output Voltage Noise
(µV RMS)
Ref. BypassLow Batt./ Pwr. Fail OutWatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypmaxtypSee Notes
MAX887712.56.51.5
1.8
2.5
2.8
2.84
3
3.15
3.3
3.6
5
0.1615015018020YesNoNoYes-40 to +85SOT/5
TSOT/5
$0.77 @1k
MAX8878SOT/5
TSOT/5
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8878EUK15+TNo Longer AvailableSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK18+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK18+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK18-TNo Longer AvailableMAX8878EUK18+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK22+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK25+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK25+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK25-TNo Longer AvailableMAX8878EUK25+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK27+TNo Longer AvailableSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK27-TNo Longer AvailableSOT,;5 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8878EUK28No Longer AvailableMAX8878EUK28+SOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK28+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK28+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK28-TNo Longer AvailableMAX8878EUK28+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK29+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK29-TNo Longer AvailableMAX8878EUK29+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK30+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK30+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK30-TNo Longer AvailableMAX8878EUK30+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK32+TNo Longer AvailableSOT,;5 pin;9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8878EUK32-TNo Longer AvailableSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK33No Longer AvailableMAX8878EUK33+SOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK33+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK33+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK33-TNo Longer AvailableMAX8878EUK33+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK36+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK36+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK36-TNo Longer AvailableMAX8878EUK36+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EUK48+TNo Longer AvailableSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK50No Longer AvailableMAX8878EUK50+SOT,;5 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8878EUK50+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK50+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8878EUK50-TNo Longer AvailableMAX8878EUK50+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8878EZK15+TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK18+TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK18-TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
MAX8878EZK25+TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK25-TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
MAX8878EZK28+TActiveTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK28-TNo Longer AvailableMAX8878EZK28+TTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8878EZK28-TG50No Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
MAX8878EZK29+ActiveTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK29+TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK29-TNo Longer AvailableTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
MAX8878EZK30+TActiveTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK30-TNo Longer AvailableMAX8878EZK30+TTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
MAX8878EZK32+TActiveTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK32-TNo Longer AvailableMAX8878EZK32+TTSOT,;5 pin;8.3 mm²-40°C to +85°CNo
MAX8878EZK33+ActiveTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
MAX8878EZK33+TActiveTSOT,;5 pin;8.3 mm²-40°C to +85°CLead Free
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