MAX1232 EBOOK

Maxim Integrated MAX Series Supervisory Circuits are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Maxim Integrated. Maxim Integrated MAXESA Supervisory Circuits are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Maxim Integrated. The MAX enhances circuit reliability in uP systemsby monitoring the power supply, monitoring software execution, and providing a debounced manual.

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High-side power-line monitoring is especially useful in battery-powered systems, max1232 it does not interfere with the battery charger’s ground path. max1232

MAX1232 – Microprocessor Monitor Technical Data

Leave open or connect to Max132. You can max1232 place a large capacitor at the RS terminal max1232 load side of the MAX to decouple the load, reducing the current transients. The “-” indicates the max1232 of current flow. OUT’s load impedance e.

MAX , Tube MAX; R̦hre MAX ID, IC РIntegra

Instead of being max1232 wrapped around a core, as in metal-film or wire- wound max1232, they are a straight mas1232 of metal and are available in values under 1Q. High-Current Measurement The MAX can achieve high-current measurements by using low-value sense resistors, which can be paral- leled to max1232 increase max1232 current-sense limit. Mqx1232, the drop across Rgi equals Max1232 x Rsense.

The OV max1232 32V input common-mode range is independent of the supply volt- age, which ensures that current-sense feedback remains viable, even when connected to a battery in deep dis- charge. For best performance, select Rsense to provide approximately mV of sense voltage for the full-scale current in each application. A high Rsense value causes the power-source voltage to degrade through IR loss.

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No circuit patent licenses max2132 implied.

The MAX requires max1232 special bypassing and responds quickly to transient changes in line current. Select Rsense max1232 the guidelines and for- mulas in the following section.

Wire-wound resis- tors have the highest max1232, while metal film is somewhat better. The MAX’s amplifier operates as shown in Max1232 1. The resistivity of 0. It has a current output that can be converted to a ground-referred voltage with a sin- max1232 resistor, accommodating a wide range of battery volt- ages and currents. For minimal voltage loss, use the lowest Rsense value. Current flows through Rgi and Q1, and into the current mirror, where it max1232 multiplied by a factor of 50 before appearing at Max1232.

At high current levels, the l 2 R losses in Rsense can be significant. Mqx1232 high imped- ance permits using Rout max1232 up to kQ with minimal error.

Max1232 MAX operates with a 3. An open-collector power-good output PG indicates when the supply voltage reaches an adequate level to guarantee proper operation of max1232 current-sense amplifi- er.

Also, the sense resistor’s value might drift if it is allowed to heat max1232 excessively.

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max1232 A high Rsense value allows lower cur- rents to be measured max1232 accurately. The PG status indicator greatly simplifies the design of closed-loop systems max1232 maax1232 that the components in the control loop have sufficient voltage to operate correctly.

Sense Resistor, Rsense Max1232 Rsense based on the max1232 criteria: Wide bandwidth and max1232 capability make the MAX suitable for closed-loop battery-charger and general- purpose current-source applications.

The MAX current-sense amplifier’s unique max1232 gy simplifies current monitoring and control. In Figure 2, assume that the load current to be max1232 sured is 10A, and that you have determined max1232 0. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Max1232 reserves the right ma1x232 change the circuitry and specifications without notice at any time. Use a single-point star ground for the highest current- measurement accuracy.

Table 1 shows suggested component values and indicates max1232 resulting scale factors for vari- ous applications required to sense currents from mA to mad1232. If the cost of Rsense is an issue, max1232 might want to use an alternative solution, as shown in Figure 2. Take this into consideration when choosing the resistor value and its power dissipation wattage rating. Adjust the Rsense value to monitor higher or lower cur- rent levels.