DATA SHORT
To request the full datasheet, please visit
www.intersil.com/products/ISL88750
ISL88750
Narrow VDC (NVDC) Battery Charger with SMBus Interface
The
ISL88750
is a highly versatile Narrow VDC (NVDC) battery
charger, supporting 2-, 3- or 4-cell batteries. It allows the
battery to work with the adapter together to supply the system
load when it exceeds the adapter capability, referred to as
system Turbo mode. ISL88750 quickly turns on BGATE to
enable the battery to help the adapter provide the system
power in Turbo mode.
The ISL88750 uses N-channel MOSFETs (NFETs) for all the
switches to achieve the best performance and lowest BOM
cost. The internal charge pump is capable of turning on all the
NFETs fast or slow depending on the circumstance or the need.
The ability to quickly turn on NFETs prevents system bus
voltage drop when the battery is suddenly removed in Turbo
mode or in Battery Learn mode.
The ISL88750 features hardware based adapter current limit
and battery-current limit in addition to SMBus programmable
limits.
The ISL88750 provides a high accuracy adapter current
monitor and battery discharging current monitor outputs. To
provide maximum flexibility for working with high power and
low power systems, it provides several configurable
current-sense resistor value options to achieve the best
trade-off of current sensing accuracy vs power loss.
The ISL88750 uses the Intersil patented Robust Ripple
Regulator (R3™) modulation scheme to provide excellent
light-load efficiency and fast dynamic response. It is available
in a 32 Ld 4x4mm
2
QFN package.
FN8840
Rev 0.00
April 22, 2016
Features
• Adapter current monitor and battery discharging current
monitor
• Uses NFET for all the switches
- Supports removal of battery during Battery Learn mode
- Actively controlled inrush current to prevent FET damage
• SMBus programmable settings and high accuracy
• Comprehensive protection features include
- Hardware-based adapter current and battery current
limits
- Supports sudden removal of battery in system Turbo
mode
• 16 switching frequency options from 350kHz to 1MHz
• Low quiescent current
• SMBus and auto-increment I
2
C compatible
• Intersil Robust Ripple Regulator (R3™) modulation scheme
provides excellent light-load efficiency and fast dynamic
response
• 32 Ld 4x4mm
2
QFN package
• Pb-free (RoHS compliant)
Applications
• Devices with rechargeable 2-, 3- or 4-cell batteries
ADAPTER
VADP
AFET
SFET
VSYS
SYSTEM
ASGATE CMSRC
UGATE
Q1
L
BFET
VBAT
NVDC
CHARGER
PROG
PHASE
LGATE
BGATE
VBAT
Q2
FIGURE 1. TYPICAL CONFIGURATION
FN8840 Rev 0.00
April 22, 2016
Page 1 of 2
ISL88750
© Copyright Intersil Americas LLC 2016. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see
www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at
www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see
www.intersil.com
FN8840 Rev 0.00
April 22, 2016
Page 2 of 2
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