Battery Charger. ISL9238A Datasheet

ISL9238A Charger. Datasheet pdf. Equivalent

ISL9238A Datasheet
Recommendation ISL9238A Datasheet
Part ISL9238A
Description Buck-Boost Narrow VDC Battery Charger
Feature ISL9238A; DATASHEET ISL9238A Buck-Boost Narrow VDC Battery Charger with SMBus Interface and USB OTG FN8978 R.
Manufacture Renesas
Datasheet
Download ISL9238A Datasheet




Renesas ISL9238A
DATASHEET
ISL9238A
Buck-Boost Narrow VDC Battery Charger with SMBus Interface and USB OTG
FN8978
Rev.1.00
Nov 30, 2017
The ISL9238A is a buck-boost Narrow Output Voltage DC
(NVDC) charger. The ISL9238A provides 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 R3™ Technology is used
to provide high light-load efficiency and fast transient
response.
In Charging mode the 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 up 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 ISL9238A can operate with only a
battery, only an adapter, or both connected. For Intel IMVP8
compliant systems the ISL9238A includes PSYS (System power
monitor) functionality, which provides an analog signal
representing total platform power. The PSYS output connects to a
wide range of Intersil IMVP8 core regulators to provide an IMVP8
compliant power domain function.
The ISL9238A supports reverse buck, boost, or buck-boost
operation to the input port from 2- to 4-cell batteries.
The ISL9238A 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 2.4V to 18.304V
• Autonomous charging option (automatic end of charging)
• System power monitor PSYS output, IMVP compliant
• Up 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
• 4x4 32 Ld TQFN package
Applications
• 1 to 4-cell tablet, ultrabook, notebook, power bank, and any
USB-C interface portable device requiring batteries
Related Literature
• For a full list of related documents, visit our website
- ISL9238A product page
VADP
OPTIONAL
Rs1
Q1 Q4
L1
Q2 Q3
VSYS
CSIN
CSIP
ASGATE
ADP
ACIN
ACOK
PROCHOT#
AMON/BMON
BATGONE
OTGEN/CMIN
ISL9238
GND
VSYS
CSOP
CSON
BGATE
VBAT
OTGPG/CMOUT
PSYS
Rs2
VBAT
FN8978 Rev.1.00
Nov 30, 2017
FIGURE 1. TYPICAL APPLICATION CIRCUIT
Page 1 of 45



Renesas ISL9238A
ISL9238A
Table of Contents
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
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
R3 Modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
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
FN8978 Rev.1.00
Nov 30, 2017
Page 2 of 45



Renesas ISL9238A
ISL9238A
Ordering Information
PART NUMBER
(Notes 3, 4)
PART MARKING
TEMP. RANGE
(°C)
PACKAGE
(RoHS COMPLIANT)
PKG.
DWG. #
ISL9238AHRTZ (Note 1)
9238AH
-10 to +100
32 Ld 4x4 TQFN
L32.4x4D
ISL9238AIRTZ (Note 2)
9238AI
-40 to +100
32 Ld 4x4 TQFN
L32.4x4D
ISL9238EVAL1Z
Evaluation Board
NOTES:
1. Add “-T” suffix for 6k unit, “-TK” suffix for 1k 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. These 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). Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4. For Moisture Sensitivity Level (MSL), see product information page for ISL9238A. For more information on MSL, see TB363.
PART NUMBER
ISL9238
ISL9238A
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
I2C READ ADDRESS
I2C WRITE ADDRESS
0b00010011 (0x13H)
0b00010010 (0x12H)
0b00011011 (0x1BH)
0b00011010 (0x1AH)
FN8978 Rev.1.00
Nov 30, 2017
Page 3 of 45







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