A7542 is an asynchronous PWM boost converter using a constant frequency peak current mode. An external Schottky diode is needed. At light load, A7542 works in the light load mode. The supply current during the light mode is 100 A and less than 1 μA in shutdown mode, together with the 130 mΩ internal NMOS power transistor guarantees high efficiency in the whole output load current range. Up to 3 A peak current, Let A7542 can provide 1.5 A output load current, which is suitable to use as MID and mobile power supply. The input voltage is 2.5 ~ 5.5 V. The operating frequency is internally set at 1MHz.
Key features
- High Efficiency: Up to 92%
- 1.0 MHz Constant Switching Frequency
- Switch current up to 3 A
- Low RDS(ON): 0.13 Ω
- Accurate Reference: 0.6 V
- Tiny External Components
- <1μA Shutdown Current
- Available in SOT-26 Package
Key applications
- WLED Drivers
- Networking cards powered by PCI or PCI-express slots
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