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ISL91132 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ISL91132 Datasheet(HTML) 1 Page - Renesas Technology Corp |
1 / 2 page ![]() FN8637 Rev.1.00 Page 1 of 2 Decem ber 8, 2016 FN8637 Rev.1.00 Decem ber 8, 2016 ISL91132 High Efficiency 1.8A Boost Regulator with Input-to-Output Bypass DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl91132 The ISL91132 is an integrated boost switching regulator for battery powered applications. The device provides a power supply solution for products using a one cell Li-ion or Li- polymer battery. The device is capable of delivering up to 1.8A output current from VIN = 2.5V and VOUT = 3.3V. The no-load quiescent current is only 108μA in Boost mode and 45μA in Forced Bypass mode, which significantly reduces the standby consumption. The ISL91132 offers a Bypass mode operation where the output is directly connected to the input through a 38mΩ MOSFET to allow a significantly lower dropout voltage. The Bypass mode can be entered by an external command, or by auto bypass. The Forced Bypass mode allows the output voltage to operate close to the input voltage and improves the efficiency under these conditions. The ISL91132 is designed to support six fixed output voltages ranging from 3.15V to 5V. A voltage select pin is available for each output variant to scale up the output voltage by a small offset to compensate the load transient droop. The ISL91132 requires only an inductor and a few external components to operate. The 2.5MHz switching frequency further reduces the size of external components. The ISL91132 is available in a 16 bump, 0.4mm pitch, 1.78mmx1.78mm WLCSP. Features • Input voltage range: 2.35V to 5.4V •Output current: up to 1.8A (VIN = 2.5V, VOUT = 3.3V) •Burst current up to 2A (VIN = 2.5V, VOUT = 3.3V, tON < 600µs, T = 4.6ms) • High efficiency: up to 96% • 108µA quiescent current minimizes standby consumption in Boost mode, 45µA in Forced Bypass mode • 2.5MHz switching frequency minimizes external component size • Forced Bypass or Auto Bypass modes with a 38mΩ switch • PFM mode at light-load currents • Fully protected for overcurrent, over-temperature, and undervoltage • Load disconnect when disabled • Small 1.78mmx1.78mm WLCSP Applications • Smartphones and tablet PCs • Wireless communication devices • 2G/3G/4G RF power amplifiers •USB OTG power source Related Literature • AN1942, “ISL91132 Evaluation Board User Guide” • AN9208, “High Frequency Power Converters” FIGURE 1. TYPICAL APPLICATION VIN = 2.35V TO 5.4V VOUT = 3.3V TO VIN UP TO 1.5A ISL91132IIMZ VIN EN LX VOUT C2 22µF GND PGND C1 22µF PG RESET R1 BYPS AUTO BYPASS FORCED BYPASS L1 0.47µH VSEL VOUT HI VOUT LO FIGURE 2. EFFICIENCY vs LOAD CURRENT, VOUT = 3.3V 84 86 88 90 92 94 96 98 100 0.001 0.010 0.100 1.000 2.7 VIN 4 VIN 3 VIN LOAD CURRENT (A) |
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