Intersil's ISL9120IR is an ultra-small, low-cost, very high-efficiency (up to 98%) buck-boost switching regulator with adaptive PFM architecture for low power consumer applications. The ISL9120 has automatic and forced bypass functionality for efficiency enhancement during standby mode. The product is designed to function as the power supply to system or to power system peripheral devices in portable battery powered consumer products. With the large input voltage range of 1.8 V to 5.5 V, it is optimized for any Li-ion or Li-polymer battery applications, but its low voltage input capability makes it ideal for other battery operated systems. This is a high-efficiency, low-cost, buck-boost product for portable and wearable products.
| Features and Benefits |
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Applications |
- Accepts input voltages above or below regulated output voltage
- Automatic bypass mode functionality
- Automatic and seamless transitions between buck and boost modes
- Input voltage range: 1.8 V to 5.5 V
- Selectable forced bypass power saving mode
- Adaptive multilevel current limit scheme to optimize efficiency at low and high currents
- Output current: up to 800 mA (VIN = 2.5 V, VOUT = 3.3 V)
- High efficiency: up to 98%
- 41 μA quiescent current maximizes light-load efficiency
- Fully protected for over-temperature and undervoltage
- Small 3 mm x 3 mm 12 Ld TQFN package
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- Wearables (security, safety, medical, wellness, sport/fitness, lifestyle computing, communication, glamour)
- Wearables clipped to clothing, wrist, shoe, jewelry, headphones
- Telehealth applications (implantable medical devices, insulin pumps, gastric stimulators, defibrillators/pacemakers)
- Smartphones and tablets
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