MAX1973, MAX1974 Smallest 1A, 1.4MHz Step-Down Regulators

The MAX1973 MAX1974 are constant-frequency 1.4MHz pulse-width-modulated (PWM) current-mode Step-down Regulators The output voltage CAN be set as low as 0.75V using an external voltage-divider, or it CAN be set to preset outputs of 1V, 1.5V MAX1974 , 1.8V, or 2.5V MAX1973 without requiring external resistors. The MAX1973 also includes a voltage-margining feature that offsets the output voltage up or down 4% to facilitate board-level production testing.
A fixed 1.4MHz operating frequency ensures operation outside the DSL frequency band, provides fast transient response, and allows the use of small external components. Only 4.7F input and output ceramic capacitors are needed for 1A applications. Forced PWM operation ensures a constant switching frequency over all load conditions.
Output voltage accuracy is 1% over load, line, and temperature operating ranges. The MAX1973 features voltage margining; the MAX1974 provides a POK output to indicate when the output has reached 90% of its nominal regulation voltage. Both devices are available in small 10-pin MAX packages.
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By Maxim Integrated Products
MAX1973 's PackagesMAX1973 's pdf datasheet
MAX1973EUB uMAX
MAX1973EUBT uMAX
MAX1973EUB-T uMAX




MAX1973 Pinout, Pinouts
MAX1973 pinout,Pin out
This is one package pinout of MAX1973,If you need more pinouts please download MAX1973's pdf datasheet.

MAX1973 Application circuits
MAX1973 circuits
This is one application circuit of MAX1973,If you need more circuits,please download MAX1973's pdf datasheet.


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