ADP3367 Analog Devices, ADP3367 Datasheet
ADP3367
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ADP3367 Summary of contents
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... Solar Powered Instruments High Efficiency Linear Power Supplies GENERAL DESCRIPTION The ADP3367 is a low-dropout precision voltage regulator that can supply up to 300 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 resistors ...
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... OUT tion is not implied. Exposure to absolute maximum rating conditions for extended + 0 periods of time may affect reliability Model ADP3367AR *SO = Small Outline Package. –2– unless otherwise noted) A MIN ...
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... REV. 0 GENERAL INFORMATION The ADP3367 contains a micropower bandgap reference volt- age 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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... ADP3367–Typical Performance Characteristics 500 250 10 100 1 LOAD CURRENT – mA Figure 2. Dropout Voltage vs. Load Current + 0.1 0.01 0.01 0 – mA OUT Figure 3. Ground Current vs. Load Current 1000 100mA 100 50mA 20mA 10mA 10 5mA 2mA 1 0.00 0.05 0.10 0.15 0.20 0.25 I-O DIFFERENCE – mV Figure 4. DD Output Current vs. I-O Differential 2 ...
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... C1 10µF Figure 10. Low Battery/Supply Detect Circuit Dropout Detector The ADP3367 features an extremely low dropout voltage mak- ing it suitable for low voltage systems where headroom is limited. A dropout detector is also provided. The dropout detector output, DD, changes as the dropout voltage approaches its limit. This is useful for warning that regulation can no longer be maintained ...
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... V IN 1mA 500µA POWER DISSIPATION The ADP3367 can supply currents up to 300 mA and can oper- +5V ate with input voltages as high as 16.5 V, but not simultaneously. OUTPUT important that the power dissipation and hence the internal 10µF 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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... Figure 7 shows how quickly the regulator recovers from an out- put load change from 100 mA. The offset due to the load current change is less than 1 mV. Monitored P Power Supply Figure 15 shows the ADP3367 being used in a monitored P supply application. The ADP3367 supplies +5 V for the micro- –7– ADP3367 40 0 ...
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... An interrupt is gener- ated so that a power-down sequence can be completed before power is completely lost. The low dropout voltage on the ADP3367 maximizes the available time to carry out the power- down sequence. The resistor divider network R1 and R2 should be selected so that the voltage on PFI is 1. the desired warning voltage ...