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Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Package Information

CAD Model: View CAD Model
Pkg. Type: QFN
Pkg. Code: LFJ
Lead Count (#): 16
Pkg. Dimensions (mm): 5.00 x 5.00 x 0.90
Pitch (mm): 0.8

Environmental & Export Classifications

RoHS (ISL6526IRZ) Download
Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
ECCN (US)
HTS (US)

Product Attributes

Pkg. Type QFN
Carrier Type Tube
MOQ 1200
Bias Voltage Range (V) 3.3 - 5
Input Voltage (Max) (V) 5
Input Voltage (Min) (V) 2.5
Lead Compliant No
Lead Count (#) 16
Length (mm) 5
Moisture Sensitivity Level (MSL) 3
Output Current (Max) [Rail 1] (A) 20
Output Voltage (Max) (V) 5
Output Voltage (Min) (V) 0.8
Outputs (#) 1
Pb (Lead) Free Yes
Pb Free Category Pb-Free 100% Matte Tin Plate w/Anneal-e3
Pitch (mm) 0.8
Pkg. Dimensions (mm) 5.0 x 5.0 x 0.90
Qualification Level Standard
Simulation Model Available iSim
Tape & Reel No
Temp. Range (°C) -40 to +85°C
Thickness (mm) 0.9
VBIAS (Max) (V) 5
VBIAS (Min) (V) 3.3
Width (mm) 5

Description

The ISL6526, ISL6526A make simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter. Designed to drive N-Channel MOSFETs in a synchronous buck topology, the ISL6526, ISL6526A integrate the control, output adjustment, monitoring and protection functions into a single package. The ISL6526, ISL6526A provide simple, single feedback loop, voltage-mode control with fast transient response. The output voltage can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1.5% over-temperature and line voltage variations. A fixed frequency oscillator reduces design complexity, while balancing typical application cost and efficiency. The error amplifier features a 15MHz gain-bandwidth product and 6V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty cycles range from 0% to 100%. Protection from overcurrent conditions is provided by monitoring the rDS(ON) of the upper MOSFET to inhibit PWM operation appropriately. This approach simplifies the implementation and improves efficiency by eliminating the need for a current sense resistor.