The MAX1940 triple current-limited switch with autoreset supplies a guaranteed 500mA load per channel in accordance with USB specifications. The MAX1940 operates from a 4V to 5.5V input supply and consumes only 60µA of quiescent current when operating and only 3µA in standby. Selectable active-high/active-low control logic and independent shutdown controls f.
to protect the USB port. Built-in thermal-overload protection turns off the switch when the die temperature exceeds +160°C. Accurate internal current-limiting circuitry protects the input supply against both overload and shortcircuit conditions. Independent open-drain fault signals ( FAULTA , FAULTB , and FAULTC ) notify the microprocessor when a thermal-overload, current-limit, undervoltage lockout (UVLO), or short-circuit fault occurs. A 20ms fault-blanking feature enables the circuit to ignore momentary faults, such as those caused when hot-swapping a capacitive load, preventing false alarm.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | MAX194 |
Maxim |
14-Bit / 85ksps ADC with 10A Shutdown | |
2 | MAX1946 |
Maxim Integrated Products |
Single USB Switch | |
3 | MAX1947 |
Maxim Integrated Products |
Low Input/Output Voltage Step-Up DC-DC Converter | |
4 | MAX190 |
Maxim |
Low-Power / 12-Bit Sampling ADCs with Internal Reference and Power-Down | |
5 | MAX1901 |
Maxim |
500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers | |
6 | MAX1902 |
Maxim |
500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers | |
7 | MAX1904 |
Maxim |
500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers | |
8 | MAX1907A |
Maxim Integrated Products |
(MAX1907A / MAX1981A) Quick-PWM Master Controllers | |
9 | MAX1908 |
Maxim Integrated Products |
Low-Cost Multichemistry Battery Chargers | |
10 | MAX1909 |
Maxim Integrated Products |
(MAX8725 / MAX1909) Multichemistry Battery Charger | |
11 | MAX191 |
Maxim |
12-Bit Sampling ADC | |
12 | MAX1910 |
Maxim |
1.5x/2x High-Efficiency White LED Charge Pumps |