ISL91128 Datasheet | Renesas

features that can be accessed using an I2C bus interface. With a programmable output voltage range of 1.9V to 5.0V, the ISL91128 is ideal for applications requiring dynamically changing supply voltages. A programmable slew rate can be selected to provide smooth transitions between output voltage settings. The ISL91128 is available in a 20 bump, 0.4mm pitch WLCSP (2.15mmx1.74mm) with a 2.5MHz switching frequency, which further reduces the size of external ponents. Features - Accepts input voltages above or below regulated output voltage - Automatic and seamless transitions between Buck and Boost modes - I2C interface - Input voltage range: 1.8V to 5.5V - Continuous output current: up to 2.4A (PVIN = 2.5V, VOUT = 3.3V) - High efficiency: up to 96% - 30µA quiescent current maximizes light-load efficiency - Selectable bypass power saving mode operation - 2.5MHz switching frequency minimizes external ponent size - Fully protected for short-circuit, over-temperature, and undervoltage - Small 2.15mmx1.74mm WLCSP Applications - Brownout-free system voltage for smart phones and tablet PCs - Wireless munication devices - 2G/3G/4G RF power amplifiers Related Literature For a full list of related documents, visit our website - ISL91128 product page SGND PGND EFFICIENCY (%) VIN = 1.8V TO 5.5V C1 10µF IS L 9 1 1 2 8IIN Z P V IN LX1 V IN EN SDA LX2 VOUT L1 1µH VOUT = 3.3V C2 2x22µF FIGURE 1. TYPICAL APPLICATION 100 VIN = 3.3V VIN = 3.6V VIN =...