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PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator

Package Information

CAD Model: View CAD Model
Pkg. Type: uTQFN
Pkg. Code: LWE
Lead Count (#): 16
Pkg. Dimensions (mm): 2.59 x 1.80 x 0.00
Pitch (mm): 0.4

Environmental & Export Classifications

Pb (Lead) Free No
Moisture Sensitivity Level (MSL)
ECCN (US)
HTS (US)

Product Attributes

Lead Count (#) 16
Carrier Type Reel
Pb (Lead) Free No
Temp. Range (°C) -10 to +100°C
Bias Voltage Range (V) 5 - 5
IS (Typical) 1.1
Input Voltage (Max) (V) 25
Input Voltage (Max) [Rail 1] (V) 25 - 25
Input Voltage (Min) (V) 3.3
Input Voltage (Min) [Rail 1] (V) 3.3
Length (mm) 2.6
MOQ 3000
Output Voltage (Max) (V) 3.3
Output Voltage (Min) (V) 0.5
Output Voltage (Min) [Rail 1] (V) 0.5
Parametric Applications GPU core power, I/O Controller Hub, Memory Controller Hub
Parametric Category Buck Controllers (External FETs)
Pitch (mm) 0.4
Pkg. Dimensions (mm) 2.6 x 1.8 x 0.00
Pkg. Type uTQFN
Qualification Level Standard
Topology [Rail 1] Buck
VBIAS (Max) (V) 5.25
VBIAS (Min) (V) 4.75
VID Yes
Width (mm) 1.8

Description

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The ISL62873 is a Single-Phase Synchronous-Buck PWM voltage regulator featuring Intersil's Robust Ripple Regulator (R3) Technology™. The wide 3. 3V to 25V input voltage range is ideal for systems that run on battery or AC-adapter power sources. The ISL62873 is a low-cost solution 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 two resistor-programmed setpoint reference voltages that directly set the output voltage of the converter between 0. 5V to 1. 5V, and up to 3. 3V using a feedback voltage divider. Optionally, an external reference such as the DAC output from a microcontroller, can be used by either IC to program the setpoint reference voltage, and still maintain the controlled slew-rate features. Robust integrated MOSFET drivers and Schottky bootstrap diode reduce the implementation area and lower component cost. Intersil's R3 Technology™ combines the best features of both fixed-frequency and hysteretic PWM control. The PWM frequency is 300kHz during static operation, becoming variable during changes in load, setpoint voltage, and input voltage when changing between battery and AC-adapter power. The modulators ability to change the PWM switching frequency during these events in conjunction with external loop compensation produces superior transient response. For maximum efficiency, the converter automatically enters diode-emulation mode (DEM) during light-load conditions such as system standby.