By Diodes Incorporated 74
Diodes' AP72200 is a high current synchronous buck-boost converter providing high-efficiency, excellent transient response, and high output voltage accuracy. It is ideal for battery-powered applications like smartphones, tablets, and other handheld devices. The AP72200 uses an I2C, two-wire interface to dynamically program the output voltage along with other device configuration options. Its I2C interface supports bit rates up to 3.4 Mbit/s (high-speed mode). The AP72200 utilizes a low resistance, 4-switch H-bridge configuration to support buck and boost operations with at least 2 A output current. It also has outstanding line and load transient responses and a seamless transition between buck and boost modes. Its current-mode control scheme handles wide input/output voltage ratios and has three modes of operation: PFM (support LLHE), PWM (lower ripple), and Ultrasonic with no audible noise The AP72200 also features UVLO, OTP, and OCP to protect the chip. The AP72200 is available in the small 2.125 mm x 1.750 mm, 20-ball WLCSP package.
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