ISL85403FRZ-T7A

Voltage - Output (Min/Fixed):	0.5V
Base Part Number:	ISL85403
Supplier Device Package:	20-QFN (4x4)
Package / Case:	20-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C (TA)
Synchronous Rectifier:	Both
Frequency - Switching:	200kHz ~ 2.2MHz
Current - Output:	2.5A
Voltage - Output (Max):	36V
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Buck-Boost
Output Configuration:	Positive
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The ISL85403FRZ-T7A is an integrated, programmable digital PWM controller with integrated high-side and low-side FET drivers optimized for DC/DC converter applications. This controller is a perfect choice for wide input range DC/DC conversion and has applications in servers, storage, datacom/telecom, networking, portable devices, and industrial designs.The ISL85403FRZ-T7A is a digital pulse-width modulation (PWM) controller with synchronous high-side and low-side drivers for typical voltage regulator designs. It includes four onboard programmable adjustable current limit, selectable output voltage, and protection features, allowing system designers to optimize the power management solution for their application. This controller also provides a programmable dead-time insertion (DTI) capability to avoid shoot-through current.The ISL85403FRZ-T7A is a high performance, integrated solution optimized for DC/DC converter designs. The device features an integrated programmable PWM controller with selectable frequency and adjustable maximum duty cycle. The device’s integrated high- and low-side FET drivers reduce external component count, simplify the circuit design, and reduce overall system cost.The ISL85403FRZ-T7A offers a wide range of input voltage levels, from 3.5V to 32V with a wide selection of adjustable output voltages from 0.6V to 5.5V. The output voltage is highly accurate and easily programmed by setting the resistance between the VFB and GND pins with external resistors.The ISL85403FRZ-T7A enables continuous mode of operation for DC/DC converter designs across a wide range of input voltage levels due to its programmable current limit (IOC) feature. The IOC component of the PWM signal can be programmed by adjusting RCSN voltage, after enabling IOC. The device also features programmable dead-time insertion (DTI) which prevents both high- and low-side FETs from being on simultaneously and reduces shoot-through current when the MOSFETs turn on and off sequentially. To further enhance system safety, a variety of protection features are included or accessible through I2C such as over-voltage protection, under-voltage protection, and thermal shutdown to prevent component damage in the event of an over-temperature or short-circuit fault.Overall, the ISL85403FRZ-T7A is a powerful yet cost-effective solution ideal for embedded power designs where efficiency, space, and cost are important considerations. The device’s integrated high- and low-side drivers, programmable current limit, selectable output voltage, and protection features make it an ideal choice for a wide range of DC/DC applications. Its wide input voltage range and adjustable output voltage offer system designers maximum flexibility when designing their power management solution.

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