The MAX1953EUB+T is a low-cost, high-frequency, current mode PWM buck controller in a 10-pin µMAX package. It operates at a fixed 1 MHz switching frequency, which helps reduce external component size and cost. The device provides excellent transient response with minimal output capacitance and can supply up to 10A of output current. It features a selectable current limit to optimize performance and cost by matching the external MOSFET's on-resistance. The output voltage is adjustable from 0.8V to just below input voltage (0.86 VIN). Designed to drive a pair of external N-channel MOSFETs in a synchronous buck configuration, it improves efficiency and reduces cost compared to P-channel topologies. The controller is ideal for use in graphics and video cards, microprocessor core power supplies, low-voltage distributed power, and telecommunications applications. It supports a supply voltage range of 3V to 5.5V, operates from -40°C to 85°C, and includes features such as internal digital soft-start (4ms), thermal overload protection, and no need for a current-sense resistor. The maximum quiescent current is 2mA, with standby current at 350µA. The maximum duty cycle is 96% at the high level of the switching node, with a minimum of 18%. Note that market demand has extended lead times, and delivery dates may fluctuate; the product is exempt from discounts.
Purchase the MAXIM MAX1953EUBT online today to enhance your power supply projects with a high-frequency, current mode PWM buck controller. This compact, cost-effective module operates at 1MHz, reducing external component size and cost while providing excellent transient response. With adjustable output voltage from 0.8V to just below input voltage, it supports up to 10A current, making it suitable for graphics cards, microprocessor cores, telecom, and distributed power applications. Features include digital soft-start, thermal protection, and no need for current-sense resistors, ensuring reliable and efficient operation in a small package.
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You can download the MAX1953EUBT datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.
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