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ISL95870HRUZ-T

Robust Ripple Regulator™ (R3) Controller, GPU Core Power Voltage Regulator IC 1 Output 16-UTQFN (2.6x1.8)

Manufacturer:

RENESAS
Mfr.Part #:

ISL95870HRUZ-T
Datasheet:

ISL95870HRUZ-T Datasheet (PDF)
Pkg. Type:

uTQFN
Carrier Type:

Reel
MOQ:

3000
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ISL95870HRUZ-T General Description

The ISL95870, ISL95870A, ISL95870B ICs are Single-Phase Synchronous-Buck PWM regulators featuring Intersil’s proprietary R⁴ Technology™. The wide 3. 3V to 25V input voltage range is ideal for systems that run on battery or AC-adapter power sources. The ISL95870A and ISL95870B are low-cost solutions for applications requiring dynamically selected slew-rate controlled output voltages. The soft-start and dynamic setpoint slew-rates are capacitor programmed. Voltage identification logic-inputs select four (ISL95870A, ISL95870B) resistor-programmed setpoint reference voltages that directly set the output voltage of the converter between 0. 5V and 1. 5V, and up to 5V with a feedback voltage divider. Compared with R³ modulator, the R⁴ modulator has equivalent light-load efficiency, faster transient performance, accurately regulated frequency control and all internal compensation. These updates, together with integrated MOSFET drivers and schottky bootstrap diode, allow for a high-performance regulator that is highly compact and needs few external components. The differential remote sensing for output voltage and selectable switching frequency are another two new functions. For maximum efficiency, the converter automatically enters diode-emulation mode (DEM) during light-load conditions such as system standby.

Key Features

Input Voltage Range: 3.3V to 25V
Output Voltage Range: 0.5V to 5V
Precision Regulation
Proprietary R⁴™ Frequency Control Loop
±0.5% System Accuracy Over -10°C to +100°C
Optimal Transient Response
Intersil's R⁴™ Modulator Technology
Output Remote Sense
Extremely Flexible Output Voltage Programmability
2-Bit VID Selects Four Independent Setpoint Voltages for ISL95870B
2-Bit VID Selects Four Dependent or Three Independent Setpoint Voltages for ISL95870A
Simple Resistor Programming of Setpoint Voltages
Selectable 300kHz, 500kHz, 600kHz or 1MHz PWM Frequency in Continuous Conduction
Automatic Diode Emulation Mode for Highest Efficiency
Power-Good Monitor for Soft-Start and Fault Detection