|Category||Semiconductors => Power Management ICs => Battery Management => 8821645|
|Title||Battery Management Buck/Boost Notebook Battery Charger|
Intersil ISL9238 Buck-Boost NVDC Charger provides the NVDC (Narrow Output Voltage DC) charging function, system bus regulation and protection features for a tablet, ultrabook, notebook, power bank and any USB-C interface platforms. Intersils advanced R3 Technology is used to provide high light-load efficiency and fast transient response. In charging mode, the ISL9238 takes input power from a wide range of DC power sources. It then safely charges battery packs with up to 4-series cell Li-ion batteries. As an NVDC topology charger, it 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 ISL9238 can operate with only a battery, only an adapter or both connected.
|Datasheet||Download ISL9238HRTZ-T7A datasheet
|Product Category||Battery Management|
|Output Voltage||2.4 V to 18.304 V|
|Output Current||6.03 A|
|Operating Supply Voltage||3.2 V to 23.4 V|
|Operating Supply Current||115 mA|
|Maximum Operating Temperature||+ 100 C|
|Minimum Operating Temperature||- 10 C|
|Factory Pack Quantity||250|
Buck-Boost Narrow VDC Battery Charger with SMBus Interface and USB OTG
The ISL9238 and ISL9238A are buck-boost Narrow Output Voltage DC (NVDC) chargers. The ISL9238 and ISL9238A provide the NVDC charging function, system bus regulation and protection features for tablet, ultrabook, notebook, power bank and any USB-C interface platform. Intersil's advanced R3TM Technology is used to provide high light-load efficiency and fast transient response. In Charging mode the ISL9238 and ISL9238A takes input power from a wide range of DC power sources (conventional AC/DC charger adapters, USB PD ports, travel adapters, etc.) and safely charges battery packs with to 4-series cell Li-ion batteries. As a NVDC topology charger, it 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 ISL9238 and ISL9238A can operate with only a battery, only an adapter or both connected. For Intel IMVP8 compliant systems the ISL9238 and ISL9238A includes PSYS (System power monitor) functionality, which provides an analog signal representing total platform power. The PSYS output will connect to a wide range of Intersil IMVP8 core regulators to provide an IMVP8 compliant power domain function. The ISL9238 and ISL9238A support reverse buck, boost, or buck-boost operation to input port from to 4-cell batteries. The ISL9238 and ISL9238A have serial communication via SMBus/I2C that allows programming of many critical parameters to deliver a customized solution. The ISL9238A is exactly same as ISL9238, but it has different SMBus addresses for customers who use two battery chargers in one system.Features
Buck-boost NVDC charger for or 4-cell Li-ion batteries Input voltage range to 23.4V (no dead zone) System output voltage to 18.304V Autonomous charging option (automatic end of charging) System power monitor PSYS output, IMVP compliant to 1MHz switching frequency Adapter current and battery current monitor (AMON/BMON) PROCHOT# open-drain output, IMVP compliant Allows trickle charging of depleted battery 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 Package 32 Ld TQFNApplications
to 4-cell tablet, ultrabook, notebook, power bank, and any USB-C interface portable device requiring batteriesFor a full list of related documents please visit our web pages ISL9238, ISL9238A product pages
ADP ACIN ACOK PROCHOT# AMON/BMON BATGONE OTGEN/CMIN
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-468-3774 | Copyright Intersil Americas LLC 2016. All Rights Reserved Intersil (and design) and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.
Ordering Information. 3 Pin Configuration. 4 Pin Descriptions. 4 Block Diagram. 6 Simplified Application Circuit. 7 Absolute Maximum Ratings. 8 Thermal Information. 8 Recommended Operating Conditions. 8 Electrical Specifications. 8 SMBUS Timing Specification.14 Gate Driver Timing Diagram.14 Typical Performance.15 General SMBus Architecture.18 Data Validity. 18 START and STOP Conditions. 18 Acknowledge. 18 SMBus Transactions. 19 Byte Format. 19 SMBus and I2C Compatibility. 19 ISL9238 and ISL9238A SMBus Commands.19 Setting Charging Current Limit. 21 Setting Adapter Current Limit. 21 Setting Two-Level Adapter Current Limit Duration. 22 Setting Maximum Charging Voltage or System Regulating Voltage. 23 Setting Minimum System Voltage. 23 Setting PROCHOT# Threshold for Adapter Overcurrent Condition. 23 Setting PROCHOT# Threshold for Battery Over Discharging Current Condition. 24 Setting PROCHOT# Debounce Time and Duration Time. 24 Control Registers. 24 OTG Voltage Register. 30 OTG Current Register. 30 Input Voltage Register. 30 Information Register. 31 Application Information. 32 R3TM Modulator. 32 ISL9238 and ISL9238A Buck-Boost Charger with USB OTG 33 Soft-Start. 34 Programming Charger Option. 34 Autonomous Charging Mode. 35 Battery Ship Mode. 35 DE Operation. 35 Power Source Selection. 35 Battery Learn Mode. 36 Turbo Mode Support. 36 Two-Level Adapter Current Limit. 36 Current Monitor. 37 PSYS Monitor. 37 Trickle Charging. 37 System Voltage Regulation. 37 Charger Timeout. 37 USB OTG (On the Go). 38 Stand-Alone Comparator. 38 Adapter Overvoltage Protection. 39 Battery Overvoltage Protection. 39 System Overvoltage Protection. 39 Way Overcurrent Protection (WOCP). 39 Over-Temperature Protection. 39 Switching Power MOSFET Gate Capacitance. 39 Adapter Input Filter. 39 General Application Information. 40 Select the LC Output Filter. 40 Select the Input Capacitor. 40 Select the Switching Power MOSFET. 41 Select the Bootstrap Capacitor. 41 Layout. 42 Revision History. 44 About Intersil. 44 Package Outline Drawing. 45
PART NUMBER (Notes 5) ISL9238HRTZ (Note 1) ISL9238IRTZ (Note 2) ISL9238AHRTZ (Note 3) ISL9238EVAL1Z NOTES: 1. Add "-T" suffix for 6k unit, "-TK" suffix for 1k unit, or "-T7A" suffix for 250 unit tape and reel options. Refer to TB347 for details on reel specifications. 2. Add "-T" suffix for 6k unit tape and reel option. Refer to TB347 for details on reel specifications. 3. Add "-T" suffix for 6k unit or "-TK" suffix for 1k unit tape and reel options. Refer to TB347 for details on reel specifications. 4. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC STD-020. 5. For Moisture Sensitivity Level (MSL), see product information page for ISL9238, ISL9238A. For more information on MSL, see tech brief TB363. TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS PART NUMBER ISL9238A I2C READ ADDRESS (0x1BH) I2C WRITE ADDRESS 9238I 9238AH Evaluation Board PART MARKING TEMP. RANGE (°C) to +100 PACKAGE (RoHS COMPLIANT) Ld 4x4 TQFN Ld 4x4 TQFN Ld 4x4 TQFN PKG. DWG. # L32.4x4D
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