Features
- 3A High Efficiency Synchronous Buck Regulator with up to 95% Efficiency
- 2% Output Accuracy Over-Temperature/Load/Line
- Internal Digital Soft-Start - 1.5ms
- 6A Current Sharing Mode Operation
- External Synchronization up to 6MHz
- Internal Current Mode Compensation
- Peak Current Limiting and Hiccup Mode Short Circuit Protection
- Reverse Overcurrent Protection
Description
ISL8036, ISL8036A are integrated power controllers rated for dual 3A output current or current sharing operation with a 1MHz (ISL8036)/2. 5MHz (ISL8036A) step-down regulator, which is ideal for any low power low-voltage applications. The channels are 180° out-of-phase for input RMS current and EMI reduction. It is optimized for generating low output voltages down to 0. 8V each. The supply voltage range is from 2. 8V to 6V, allowing for the use of a single Li+ cell, three NiMH cells or a regulated 5V input. The two channels are 180° out-of-phase, and each one has a guaranteed minimum output current of 3A. They can be combined to form a single 6A output in the current sharing mode. While in current sharing, the interleaved PWM signals reduce input and output ripple. The ISL8036, ISL8036A includes a pair of low ON-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. 100% duty-cycle operation allows less than 250mV dropout voltage at 3A each. The ISL8036, ISL8036A offers an independent 1ms Power-good (PG) timer at power-up. When shutdown, ISL8036, ISL8036A discharges the output capacitor. Other features include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal shutdown. The ISL8036, ISL8036A is offered in a 24 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 1. 5cm2 area.
Parameters
| Attributes | Value |
|---|---|
| Topology [Rail 1] | Buck |
| Outputs (#) | 2 |
| Input Voltage (Min) [Rail 1] (V) | 2.85 |
| Input Voltage (Max) [Rail 1] | 6 |
| Output Voltage (Min) [Rail 1] (V) | 0.8 |
| Output Voltage (Max) [Rail 1] (V) | 6 |
| Output Current (Max) [Rail 1] (A) | 3 |
| Switching Frequency Range (Typical) (kHz) | 1000 - 1000 |
| Control Type | Current Mode |
| Peak Efficiency (%) | 95 |
| IQ [Rail 1] (µA) | 15000 |
| SYNCH Capability | Yes |
| Qualification Level | Standard |
| Temp. Range (°C) | -40 to +85°C |
| Simulation Model Available | iSim |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| QFN | 4.0 x 4.0 x 0.90 | 24 | 0.5 |
Application Block Diagrams
 | Power Sequencer & I/O Expander for Printers (PPC/MFP) An MCU-based power sequencer and I/O expander for high-performance PPC/MFP printers. |
Additional Applications
- DC/DC POL Modules
- µC/µP, FPGA and DSP Power
- Plug-in DC/DC Modules for Routers and Switchers
- Test and Measurement Systems
- Li-ion Battery Power Devices
- Bar Code Reader
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Dual 3A 1MHz High-Efficiency Synchronous Buck Regulator Evaluation Board
The ISL8036DUALEVAL1Z evaluation board is intended for use by individuals with requirements for point-of-load (POL) applications sourcing from 2.85V to 6V. This evaluation board is used to demonstrate the performance of the ISL8036 low quiescent current mode converter.
The ISL8036 is an... Read More
Support Communities
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ISL8036/A Parallel application and Power Good output questions
... a quadrature-phase clock for two chip- 4-phase operation, correct? Are there any example designs of a 4 or more phase implementation of the ISL8036/A Renesas can share? 2) Is there a limit to the number of phases, and is the interconnection of the FB's, COMP ...
Nov 29, 2022
Support Communities
