ADP667 Analog Devices, ADP667 Datasheet
ADP667
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ADP667 Summary of contents
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... Solar Powered Instruments High Efficiency Linear Power Supplies GENERAL DESCRIPTION The ADP667 is a low-dropout precision voltage regulator that can supply up to 250 mA output current. It can be used to give a fixed +5 V output with no additional external components or can be adjusted from +1 +16 V using two external resis- tors ...
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... ADP667–SPECIFICATIONS Parameter Input Voltage Output Voltage, V OUT Maximum Output Current Quiescent Current I : Shutdown Mode GND I : Normal Mode GND Dropout Voltage Load Regulation Line Regulation SET Reference Voltage, V SET SET Input Leakage Current, I SET Output Leakage Current, I OUT Short-Circuit Current, I ...
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... REV. 0 GENERAL INFORMATION The ADP667 contains a micropower bandgap reference voltage source, an error amplifier A1, two comparators (C1, C2) and a series PNP output pass transistor. CIRCUIT DESCRIPTION The internal bandgap voltage reference is trimmed to 1.255 V and is used as a reference input to the error amplifier A1 ...
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... V places the part in shutdown. If the shutdown function is not being used, then SHDN should be connected to GND. Low Supply or Low Battery Detection The ADP667 contains on-chip circuitry for low power supply or +5V OUTPUT battery detection. If the voltage on the LBI pin falls below the internal 1 ...
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... C, solid tantalums should be used as many alumi- num electrolytes freeze at this temperature. Quiescent Current Considerations The ADP667 uses a PNP output stage to achieve low dropout voltages combined with high output current capability. Under normal regulating conditions the quiescent current is extremely low. However if the input voltage drops so that it is below the desired output voltage, the quiescent current increases consider- ably ...
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... ADP667–Typical Performance Characteristics 1000 100 100 LOAD CURRENT – mA Figure 8. Dropout Voltage vs. Load Current + 0.1 0.01 0.01 0 – mA OUT Figure 9. Quiescent Current vs. Load Current 1000 T T 100mA 100 50mA 20mA 10mA 10 5mA 2mA 1 0 ...
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... POWER DISSIPATION The ADP667 can supply currents up to 250 mA and can oper- ate with input voltages as high as 16.5 V, but not simultaneously important that the power dissipation and hence the internal die temperature be maintained below the maximum limits. Power Dissipation is the product of the voltage differential across the regulator times the current being supplied to the load ...
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... ADP667 0.160 (4.06) 0.115 (2.93) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic DIP (N- 0.280 (7.11) PIN 1 0.240 (6.10 0.325 (8.25) 0.430 (10.92) 0.300 (7.62) 0.348 (8.84) 0.060 (1.52) 0.210 0.015 (0.38) (5.33) MAX 0.130 0.015 (0.381) (3.30) 0.008 (0.204) MIN SEATING 0.022 (0.558) 0.070 (1.77) 0.100 PLANE (2.54) 0.014 (0.356) 0.045 (1.15) BSC ...