DC2688A-A

DC2688A-A is a LT8698S 5V 3A, 42V input USB charger with cable drop compensation and data line protection demonstration board. Demonstration circuit 2688A is a USB charger designed to power the 5V USB VBUS rail with up to 3A from an input voltage as high as 42V. The DC2688A circuit features the LT®8698S which is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator which features the second-generation Silent Switcher® technology that minimizes EMI and reduces PCB layout sensitivity. The LT8698S supports a wide variety of portable device charger profiles including USB BC 1.2 CDP, DCP and SDP as well as common proprietary charger profiles, all of which can be easily evaluated using the DC2688A demonstration board.

• Input supply range: 6V to 42V
• USB 5V bus voltage range: 4.8 to 5.2V at TA = 25°C, without cable drop compensation
• USB 5V bus voltage: 6.2V at TA = 25°C, with cable drop compensation
• Maximum output current of 2.4A(min) at RSENSE = 10mohm, TA = 25°C
• Maximum output current of 2.4A(min) at RSENSE = 8mohm, TA = 25°C
• Switching frequency range: 1.95MHz to 2.05MHz at TA = 25°C
• 92.7% efficiency at DC at VIN = 12V, IBUS1 = 1.5A, TA = 25°C

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