MAX8563:±1%, Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers

The MAX8563/MAX8564/MAX8564A ultra-low-output dual and triple LDO controllers allow flexible and inexpensive point-of-load voltage conversion in motherboards, desknotes, notebooks, and other applications. These parts feature a 0.5V reference voltage with ±1% accuracy providing tight regulation of the output voltage. The MAX8563 has three n-channel MOSFET controller outputs, and the MAX8564/MAX8564A has two controller outputs. Each controller output is adjustable from 0.5V to 3.3V when VDD = 12V and between 0.5V and 1.8V when VDD = 5V. Each output is independently enabled and asserts a POK signal when the output reaches 94% of the set value. Each output is protected against a soft short-circuit condition by an undervoltage comparator that disables the output when it drops to under 80% of the set voltage for more than 50µs. For a catastrophic short condition, the regulators are shut down immediately if the output drops below 60% of the set voltage. The MAX8563 is available in a 16-pin QSOP package, and the MAX8564/MAX8564A are available in a 10-pin µMAX® package.

Key Features
  • MAX8563: 3 Outputs
  • MAX8564/MAX8564A: 2 Outputs
  • ±1% Feedback Regulation
  • Adjustable Output Voltage Down to 0.5V
  • Can Use Ceramic Output Capacitors
  • Wide Supply Voltage Range Permits Operation from 5V or 12V Rails
  • Individual Enable Control and POK Signal Allows Sequencing
  • Overload Protection Against Soft Short-Circuit Condition
  • Undervoltage Short-Circuit Protection
  • Drive n-Channel MOSFETs
MAX8563, MAX8564, MAX8564A: Typical Operating Circuit
MAX8563, MAX8564, MAX8564A: Typical Operating Circuit
Applications/Uses
  • Desknotes and Notebooks
  • Dual/Triple Power Supplies
  • Graphic Cards
  • Low-Voltage DSP, µP, and Microcontroller Power Supplies
  • Motherboards
  • Ultra-Low-Dropout Voltage Regulators
DataSheet
titleDownload file
MAX8563-MAX8564A Data SheetMAX8563-MAX8564A.pdf
Parametrics
Part NumberRegulatorsVIN
(V)
VIN
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Low Batt./ Pwr. Fail OutPOK/Reset Thresh.
(V)
WatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxnomSee Notes
MAX856334.513.20.550.056300030001600NoVout-12%NoNo-40 to +85QSOP/16$1.19 @1k
MAX856421200µMAX/10$1.59 @1k
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8563EEENo Longer AvailableMAX8563EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CNo
MAX8563EEE+ActiveQSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX8563EEE+TActiveQSOP;16 pin-40°C to +85°CSee data sheet
MAX8563EEE-TNo Longer AvailableMAX8563EEE+TQSOP;16 pin-40°C to +85°CSee data sheet
MAX8563-MAX8564A.pdf MAX8564
MAX8563-MAX8564A_cn.pdf MAX8564
典型工作电路 MAX8564A