isl95908

DATASHEET
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Integrated Power Management IC For IMVP8™ Platforms
ISL95908
Features
The ISL95908 is a Power Management Integrated Circuit
(PMIC) for ultrabook, notebook and tablet computers powered
by 2-cell Li-ion batteries. It integrates control, MOSFET drivers,
power MOSFETs, fault protection and fault monitoring
functions for 8 highly efficient synchronous buck regulators
and VTT LDO. It is offered in a thermally efficient
5.5mmx5.5mm, 121-bump, 0.5mm pitch WLCSP package.
• Highly integrated power management IC
• Efficient 1MHz integrated FET switching regulators
• Internal compensation, no external compensation
• Computer system platform voltage regulators 5V, 3.3V,
1.8V/2.5V, 1V, 0.975V, 0.9V
• Programmable VR3 and VTT regulators for memory
(DDR3/L/U, LPDDR3 and DDR4)
The PMIC regulators convert system voltage from the battery
or adapter into all platform voltages needed for a typical
computer system including 5V and 3.3V system regulators,
1.8V/2.5V, 1V, 0.975V, 0.9V for controller-hub, peripheral and
core voltages as well as programmable VDDQ and VTT
regulators for DDR3/3U/3L, LPDDR3 and DDR4 voltages. The
switching regulators operate at 1MHz and are based on
Intersil’s proprietary R4™ Technology, which provides high
light-load efficiency, fast transient response, seamless
DCM/CCM transitions and requires no external compensation.
• Extensive fault protection
- Overcurrent protection
- Over-temperature protection
- Overvoltage and undervoltage protection
- Temperature alert signal
• Independent power-good indicator for each regulator
• Independent enable signals for each regulator for maximum
sequencing flexibility
The PMIC provides overcurrent, overvoltage and
over-temperature fault protections and undervoltage and
over-temperature warnings. A temperature alert signal
indicates the PMIC is operating at an elevated temperature
and ALERT indicates if any other fault or warning has occurred.
The PMIC also offers significant I2C capability and can be
configured to provide 8 GPIO pins for additional system
functionality and each regulator has an independent
power-good indicator.
• Low power consumption mode for connected standby
• I2C bus allows system fault monitoring, enable control and
configurable GPIO programming
• Output voltage offset programming through I2C
• Configuration pin provides additional system programming
options
Applications
• Ultrabook, notebook and tablet computers
Related Literature
• UG027, “ISL95908EVAL1Z Evaluation Board User Guide”
ADAPTER ISL95520
NVDC
Charger
Vsys
X86 or V
CORE
ARM
Vcore
VCCIO, 3A
V1.00A, 7A
V5A, 5A
V1.8A, 2.5A
ISL95908 VCCPRIM_CORE, 1.5A
CONFIG
PMIC
EN/GPIO
I2 C
CS#
V1.8_V2.5U, 1A
VDDQ, 8A
VTT, 1.1A
V3.3_DSW, 7A
PGOOD
TEMP ALERT
FIGURE 1. COMPUTER SYSTEM POWER MANAGEMENT SOLUTION
April 10, 2015
FN8730.0
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ISL95908 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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ISL95908
For additional products, see www.intersil.com/en/products.html
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in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets 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
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FN8730.0
April 10, 2015