Buck-Boost Narrow VDC Battery Charger for Power Bank Application with SMBus Interface and USB OTG
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Overview
Description
The ISL95538B is a buck-boost Narrow Output Voltage DC (NVDC) charger. The ISL95538B provides the NVDC charging function, system bus regulation, and protection features for tablet, Ultrabook, and notebook platforms. The advanced Renesas R3™ Technology provides high light-load efficiency and fast transient response. In Charging mode, the ISL95538B takes input power from a wide range of DC power sources (such as conventional AC/DC charger adapters, USB PD ports, travel adapters) and safely charges battery packs with up to 4-series cell Li-ion batteries. As an NVDC topology charger, the ISL95538B also regulates the system output to a narrow DC range for stable system bus voltage. The system power can be provided from the adapter, battery, or a combination of both. The ISL95538B can operate with only a battery, an adapter, or both connected. The ISL95538B supports reverse buck, boost, or buck-boost operation to the input port from 2- to 4-cell batteries. The ISL95538B has serial communication using SMBus/I2C that allows programming of many critical parameters to deliver a customized solution.
Features
- Buck-boost NVDC charger for 1-, 2-, 3-, or 4-cell Li-ion batteries
- Input voltage range 3.2V to 23.4V (no dead zone)
- System output voltage 3V to 18.304V
- Autonomous charging option (automatic end of charge and recharge)
- Up to 1MHz switching frequency
- Adapter current and battery current monitor (AMON/BMON)
- PROCHOT# open-drain output, IMVP compliant
- Allows trickle charging of depleted batteries
- Ideal diode control in Turbo mode
- Reverse buck, boost, and buck-boost operation from battery
- Two-level adapter current limit available
- Battery Ship mode option
- SMBus and auto-increment I2C compatible
- 4mm x 4mm 32 Ld TQFN package
Documentation
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Date | |
|---|---|---|
| PDF 209 KB | Datasheet - Short-form | |
| PDF 5.51 MB 日本語 | Brochure | |
| PDF 169 KB | Product Change Notice | |
| PDF 326 KB | Product Change Notice | |
| PDF 2.53 MB | Datasheet | |
| PDF 439 KB 简体中文 | White Paper | |
| PDF 320 KB | White Paper | |
| PDF 226 KB | Product Change Notice | |
| PDF 222 KB | Product Change Notice | |
| PDF 509 KB | Application Note | |
| PDF 397 KB | Application Note | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
ISL95538BIRTZ-T Active Samples Available |
TQFN | Reel | 6000 | Get Samples, |
ISL95538BIRTZ-TK Active Samples Available |
TQFN | Reel | 1000 | Get Samples, |
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Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| ISL95538BIRTZ-T | Availability |
| ISL95538BIRTZ-TK | Availability |