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HT77xxSA
200mA PFM Synchronous
Step-up DC/DC Converter
Features
• Low start-up voltage: 0.7V (Typ.) • High efficiency: 2.7V ≤ VOUT ≤ 5.0V upper 90%
(Typ.) • High output voltage accuracy: ±2.5% • Output voltage: 2.7V, 3.0V, 3.3V, 3.7V, 5.0V • Output current up to 200mA • Ultra low supply current IDD: 5μA (Typ.) • Low ripple and low noise • Low shutdown current: 0.1μA (Typ.) • TO92, SOT89, SOT23 and SOT23-5 package
Applications
• Palmtops/PDAs • Portable communicators/Smartphones • Cameras/Camcorders • Battery-powered equipment
General Description
The HT77xxSA devices are a high efficiency PFM synchronous step-up DC-DC converter series which are designed to operate with both wire wound chip power inductors and also with multi-layered chip power inductors.