Datasheet MAX866, MAX867 (Maxim)
| Fabricante | Maxim |
| Descripción | 3.3V/5V or Adjustable Output, Single-Cell DC-DC Converters |
| Páginas / Página | 12 / 1 — EVALUATION KIT. AVAILABLE. 3.3V/5V or Adjustable-Output,. Single-Cell … |
| Formato / tamaño de archivo | PDF / 143 Kb |
| Idioma del documento | Inglés |
EVALUATION KIT. AVAILABLE. 3.3V/5V or Adjustable-Output,. Single-Cell DC-DC Converters. MAX866/MAX867
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Versión de texto del documento
19-0374; Rev 1; 5/96
EVALUATION KIT AVAILABLE 3.3V/5V or Adjustable-Output, Single-Cell DC-DC Converters MAX866/MAX867 _______________General Description ____________________________Features
The MAX866 and MAX867 are ultra-small, high-efficiency, ♦
0.8V to 6.0V Input Supply Voltage
CMOS, step-up, DC-DC switching regulators for 1-cell ♦
0.9V Guaranteed Start-Up Supply Voltage
battery-powered systems. The MAX866 accepts a posi- tive input voltage between 0.8V and VOUT and converts it ♦
>80% Efficiency Over Wide Load Range
to a higher, pin-selectable output voltage of 3.3V or 5V. ♦
100µA No-Load Battery Current (VOUT = 3.3V)
The MAX867 adjustable version accepts 0.8V to 6.0V input voltages and generates a higher adjustable output ♦
1µA Shutdown Mode
voltage in the 2.7V to 6.0V range. Typical efficiencies are ♦
Up to 250kHz Switching Frequency
greater than 80%. Typical no-load supply current is 100µA (1µA in shutdown). ♦
±1.5% Reference Tolerance
The MAX866/MAX867 combine ultra-low quiescent sup- ♦
Low-Battery Detector (LBI/LBO)
ply current and high efficiency to give maximum battery ♦
Available in Ultra-Small 8-Pin µMAX Package
life. Its high switching frequency permits the use of
(1.11mm high)
small, low-cost inductors and capacitors. Additionally, internal peak-current limiting protects the IC. ♦
Circuit Fits in 0.2in2 ______________Ordering Information ________________________Applications PART TEMP. RANGE PIN-PACKAGE
Pagers
MAX866
C/D 0°C to +70°C Dice* Remote Controls MAX866ESA -40°C to +85°C 8 SO Detectors MAX866EUA -40°C to +85°C 8 µMAX 1-Cell Battery-Operated Equipment
MAX867
C/D 0°C to +70°C Dice* Backup Supplies MAX867ESA -40°C to +85°C 8 SO MAX867EUA -40°C to +85°C 8 µMAX * Dice are tested at TA = +25°C only.
__________Typical Operating Circuit _________________Pin Configurations
INPUT TOP VIEW 0.8V TO VOUT SHDN 1 8 LX 3/5 2 7 GND 330µH MAX866 REF 3 6 OUT OUTPUT 5V OR 3.3V 4 LBO 5 LBI ON/OFF SHDN LX MBRS0520LTI
SO/µMAX
OR 1N5817 47µF MAX866 3V/5V SELECT 3/5 OUT SHDN 1 8 LX LOW-BATTERY LBI DETECTOR FB 2 7 GND INPUT MAX867 REF 3 6 OUT LOW-BATTERY REF LBO GND DETECTOR OUTPUT 4 LBO 5 LBI 0.22µF
SO/µMAX ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
EVALUATION KIT AVAILABLE 3.3V/5V or Adjustable-Output, Single-Cell DC-DC Converters MAX866/MAX867 _______________General Description ____________________________Features
The MAX866 and MAX867 are ultra-small, high-efficiency, ♦
0.8V to 6.0V Input Supply Voltage
CMOS, step-up, DC-DC switching regulators for 1-cell ♦
0.9V Guaranteed Start-Up Supply Voltage
battery-powered systems. The MAX866 accepts a posi- tive input voltage between 0.8V and VOUT and converts it ♦
>80% Efficiency Over Wide Load Range
to a higher, pin-selectable output voltage of 3.3V or 5V. ♦
100µA No-Load Battery Current (VOUT = 3.3V)
The MAX867 adjustable version accepts 0.8V to 6.0V input voltages and generates a higher adjustable output ♦
1µA Shutdown Mode
voltage in the 2.7V to 6.0V range. Typical efficiencies are ♦
Up to 250kHz Switching Frequency
greater than 80%. Typical no-load supply current is 100µA (1µA in shutdown). ♦
±1.5% Reference Tolerance
The MAX866/MAX867 combine ultra-low quiescent sup- ♦
Low-Battery Detector (LBI/LBO)
ply current and high efficiency to give maximum battery ♦
Available in Ultra-Small 8-Pin µMAX Package
life. Its high switching frequency permits the use of
(1.11mm high)
small, low-cost inductors and capacitors. Additionally, internal peak-current limiting protects the IC. ♦
Circuit Fits in 0.2in2 ______________Ordering Information ________________________Applications PART TEMP. RANGE PIN-PACKAGE
Pagers
MAX866
C/D 0°C to +70°C Dice* Remote Controls MAX866ESA -40°C to +85°C 8 SO Detectors MAX866EUA -40°C to +85°C 8 µMAX 1-Cell Battery-Operated Equipment
MAX867
C/D 0°C to +70°C Dice* Backup Supplies MAX867ESA -40°C to +85°C 8 SO MAX867EUA -40°C to +85°C 8 µMAX * Dice are tested at TA = +25°C only.
__________Typical Operating Circuit _________________Pin Configurations
INPUT TOP VIEW 0.8V TO VOUT SHDN 1 8 LX 3/5 2 7 GND 330µH MAX866 REF 3 6 OUT OUTPUT 5V OR 3.3V 4 LBO 5 LBI ON/OFF SHDN LX MBRS0520LTI
SO/µMAX
OR 1N5817 47µF MAX866 3V/5V SELECT 3/5 OUT SHDN 1 8 LX LOW-BATTERY LBI DETECTOR FB 2 7 GND INPUT MAX867 REF 3 6 OUT LOW-BATTERY REF LBO GND DETECTOR OUTPUT 4 LBO 5 LBI 0.22µF
SO/µMAX ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800