Datasheet ISL98607 High Efficiency Power Supply for Small Size Displays The ISL98607 is a high efficiency power supply for Features small size displays, like smart phones, requiring Two outputs: supply rails. It integrates boost regulator, LDO, and VP = +5.0V (default) inverting charge pump that are used to generate two output rails: +5V (default) and -5V (default). The 5V VN = -5.0V (default) output voltages can be adjusted up to 5.7V with 2.8V to 4.4V Input voltage range 2 50mV steps using the I C interface. >85.5% Efficiency with 12mA load between VP and The ISL98607 integrates synchronous rectification VN MOSFETs for the boost regulator and inverting 2 charge pump, which maximizes conversion efficiency. 21mm Solution PCB area Fully integrated FETs for synchronous rectification The ISL98607 integrates all compensation and feedback components, which minimizes BOM count Integrated compensation and feedback circuits 2 and reduces the solution PCB size to 21mm . 2 I C adjustable output voltages and settings The input voltage range, high efficiency operation, Integrated VP/VN discharge resistors and also very low shutdown current make the device ideal for use in single cell Li-ion battery operated 1A shutdown supply current applications. Multiple package options: The ISL98607 is offered in the 1.82x2.15mm WLCSP 1.82x2.15mm, 4x5 array WLCSP with 0.4mm and 20 Ld 3x4mm TQFN packages, and the device is pitch specified for operation across the -40C to +85C 20 Ld 3x4mm TQFN ambient temperature range. Pb-Free (RoHS compliant) Related Literature Applications For a full list of related documents, visit our website: TFT-LCD Smart phone displays ISL98607 device page Small size/handheld displays V IN 2.8V to 4.4V L 1 C IN 2.2H VIN 10F LXP 0402 SCL VBSTCP SDA VBST Processor ENP C VBST C CP 10F ENN 10F CP 0402 0402 C VN CN 10F 0402 -5.0V VN Negative Supply VSUB LCD Panel Positive Supply VP +5.0V AGND PGND C VP 10F 0402 Figure 1. Typical Application Circuit: TFT-LCD Smart Phone Display FN8421 Rev.1.00 Page 1 of 29 Jun.3.19ISL98607 Contents 1. Overview . 3 1.1 Block Diagram 3 1.2 Ordering Information . 3 1.3 Pin Configurations . 4 1.4 Pin Descriptions . 4 2. Specifications . 5 2.1 Absolute Maximum Ratings 5 2.2 Thermal Information 5 2.3 Recommended Operation Conditions 5 2.4 Electrical Specifications . 6 3. Typical Performance Curves . 8 4. Application Information 10 2 4.1 I C Digital Interface . 10 4.2 Write Operation 12 4.3 Read Operation 12 4.4 Register Descriptions and Addresses . 13 4.5 Register Functions 13 4.6 Register Map 15 4.7 Output Voltage Setting . 16 4.8 VP and VN Headroom Voltage and Output Current . 16 4.9 Regulator Output Enable/Disable 16 4.10 Negative Charge Pump Operation (VN) . 16 4.11 PFM . 17 4.12 Fault Protection and Monitoring 17 4.13 Power-ON/OFF Sequence 18 4.14 Enable Timing Control Options 19 4.15 VP Output Hi-Z Mode 21 4.16 Component Selection . 22 5. General Layout Guidelines . 24 5.1 ISL98607 Specific Layout Guidelines . 24 6. Revision History 26 7. Package Outline Drawings . 27 FN8421 Rev.1.00 Page 2 of 29 Jun.3.19