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RAA210040 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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RAA210040 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 25 page  Datasheet R16DS0137EU0100 Rev.1.0 Page 1 Apr 13, 2021 © 2021 Renesas Electronics The RAA210040 power module is a compact, synchronous step-down, non-isolated complete power supply, capable of delivering up to 4A of continuous current. By operating from a single 2.7V to 5.5V input power rail and integrating the controller, gate driver, power inductor, and MOSFETs, the RAA210040 is optimized for space-constrained applications. Based on a peak current mode control scheme, the RAA210040 provides fast transient response and excellent loop stability. The output voltage can be set as low as 0.6V, with setpoint accuracy better than 1.5% over line, load, and temperature. The operating frequency has a 2MHz default setting; however, it can also be set from 500kHz to 4MHz by an external resistor. The external synchronization is supported with an external clock signal up to 4MHz. The RAA210040 supports a 100% duty cycle operation to minimize the switching losses and allows less than 200mV dropout voltage. A dedicated enable pin and power-good flag allows for easy system power rails sequencing. An array of protection features, including input Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), output Overvoltage Protection (OVP), and Over-temperature Protection (OTP), ensures safe operations under abnormal operating conditions. Features ▪ 4A complete power supply • Integrates controller, gate driver, MOSFETs, and inductor ▪ 2.7V to 5.5V input voltage range ▪ Adjustable output voltage • As low as 0.6V with ±1.5% accuracy over line, load, and temperature • Up to 95% efficiency ▪ Default 2MHz current mode control operation • 500kHz to 4MHz resistor adjustable • External synchronization up to 4MHz • 100% duty cycle ▪ Dedicated enable pin and power-good flag ▪ Internal 1ms soft start-up time ▪ Soft-stop output discharge ▪ UVLO, OCP, negative OCP, OVP, and OTP • OCP/Short-Circuit Protection (SCP) hiccup mode ▪ Compact RoHS compliant 3mmx3mmx1.7mm dual flat no-lead (DFN) package Applications ▪ Telecom, Industrial, optical, and medical equipment ▪ Point-of-load conversions ▪ MCU, MPU, DSP, and FPGA Figure 1. Typical Application Circuit Figure 2. Efficiency VOUT = 1.2V RAA210040 2.7V to 5.5V Input CIN COUT 1.2V 4A Output Power-Good VIN VOUT EN PGOOD SYNC FS PGND FB SGND COMP 100k 100k 390pF 820pF 169k 60 65 70 75 80 85 90 95 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Load Current (A) 3.3Vin, 1.2MHz 5Vin, 1.2MHz RAA210040 5V, 4A Step-Down DC/DC Mini Module with Integrated Inductor |
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