ISL98608 Datasheet, PDF (1/2 Pages) Intersil Corporation – High Efficiency Power Supply for Small Size Displays

DATASHEET
To request the full datasheet, please visit www.intersil.com/products/ISL98608
High Efficiency Power Supply for Small Size Displays
ISL98608
The ISL98608 is a high efficiency power supply for small size
displays, such as smart phones and tablets requiring ±supply
rails. It integrates a boost regulator, LDO and inverting charge
pump that are used to generate two output rails: +5.5V
(default) and -5.5V (default). The ±5.5V output voltages can be
adjusted from ±4.5V up to ±7V with 50mV steps using the I²C
interface.
The device integrates synchronous rectification MOSFETs for
the boost regulator and inverting charge pump, which
maximizes conversion efficiency.
ISL98608 integrates all compensation and feedback
components, which minimizes BOM count and reduces the
solution PCB size to 18mm².
The input voltage range, high efficiency operation and also
very low shutdown current make the device ideal for use in
single cell Li-ion battery operated applications.
The ISL98608 is offered in a 1.744mm x1.744mm WLCSP
package, and the device is specified for operation across the
-40°C to +85°C ambient temperature range.
Features
• Two outputs:
- VP = +5.5V (default)
- VN = -5.5V (default)
• 2.5V to 5V input voltage range
• ±4.5 to ±7V wide output range
• >89% efficiency with 12mA load between VP and VN
• 18mm² solution PCB area
• Fully integrated FETs for synchronous rectification
• Integrated compensation and feedback circuits
• I²C adjustable output voltages and settings
• Integrated VP/VN discharge resistors
• 1µA shutdown supply current
• Programmable turn on and turn off sequencing
• 1.744mm x1.744mm, 4x4 array WLCSP with 0.4mm pitch
Applications
• TFT-LCD smart phone displays
• Small size/handheld displays
VIN
2.5V TO 5V
L1
CIN
CVBST
CCP
LCD PANEL
CVN
-5.5V
NEGATIVE SUPPLY
POSITIVE SUPPLY
+5.5V
CVP
VIN
LXP
VBSTCP
VBST
CP
ISL98608
CN
SCL
SDA
ENP
ENN
VN
VSUB
VP
AGND
PGND
PROCESSOR
FIGURE 1. TYPICAL APPLICATION CIRCUIT: TFT-LCD SMART PHONE DISPLAY
December 23, 2014
1
FN8711.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.