General Description

The AS1335 is a high-efficiency, constant-frequency synchronous buck converter available in a fixed or an adjustable output voltage version. The wide input voltage range (2.6V to 5.25V), the high output current (up to 1.5A) and minimal external component requirements make the AS1335 perfect for any single Li-Ion batterypowered application.

Key Features

■ High Efficiency: Up to 96

■ Output Current: 1.5A

■ Input Voltage Range: 2.6V to 5.25V

■ Output Voltage Range: 0.6V to VIN

■ Constant Frequency Operation: 1.5MHz

■ No Schottky Diode Required

■ Power OK with 215ms delay

■ Low Dropout Operation: 100 Duty Cycle

■ Low Quiescent Supply Current: 400µA

■ Shutdown Mode Supply Current: ≤1µA

■ Current Mode Operation for Excellent Line/Load Transient Response

■ Thermal Protection

■ 10-pin TDFN 3x3mm Package

Applications

The device is ideal for mobile communication devices, laptops and PDAs, ultra-low-power systems, threshold detectors/discriminators, telemetry and remote systems, medical instruments, or any other space-limited application with low power-consumption requirements.