Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

[Guide]SGM61032 is a synchronous step-down converter chip, supports 2.5V to 5.5V voltage input, and the output supports 0.6V to VIN, the maximum continuous output current can support up to 3A, the output voltage accuracy is up to ± in the full temperature range 2%. Support PG (Power Good) to indicate the establishment of VOUT output, and can cooperate with SoC for timing management. Its Pass-Through Mode enables it to keep stable output to the maximum when the input drops. The typical working current in Pass-Through Mode is only 32μA, which can effectively extend the system maintenance working time. Its high frequency peak current adjustment constant interval (CFT, Constant Off Time) control has excellent transient response performance, and can quickly respond to load changes in light load mode. SGM61032 is designed with hiccup recovery short-circuit protection function and overheating protection function, which can reduce the impact stress on the input power supply and itself. SGM61032 is designed to work in the temperature range of -40°C to +125°C, and is available in an ultra-small SOT-563-6 package.

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

Figure 1 Typical application diagram of SGM61032

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

Figure 2 SGM61032 package diagram

Typical characteristics

● 2.5V to 5.5V wide input voltage range;

● Integrated 58.5mΩ and 26.5mΩ MOSFETs for 3A continuous output current;

● 0.1μA (TYP) shutdown current, 42μA quiescent current;

● Support 100% duty cycle;

● Pass-Through Mode working current 32μA;

● CFT control mode with peak current control;

● Pulse width modulation (PWM) voltage stabilization with energy-saving mode (PSM);

● Internal loop compensation;

● Cycle-by-cycle peak current limit;

● Short-circuit hiccup protection;

● Overheating protection function;

● -40℃ to +125℃ working temperature range;

● SOT-563-6 green package in line with environmental protection concept.

Characteristic performance

1. Load transient response waveform (load transient and its details) in Pass-Through Mode (100% duty cycle):

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

2. When the input voltage is 2.5V/5V, the output voltage is 1.2V/0.9V/0.6V, and the load current is 1.5A, the output ripple is as follows:

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

3. Line loss test waveform: 3V output, the input voltage changes from 5V to 2.5V, and the output voltage drops when the output current is 0A/0.1A/1.5A.

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

4. High efficiency (VOUT = [email protected]℃).

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

5. Transient response: input voltage 5V, output voltage 1.8V (load current step 0A to 3A and 1A to 3A).

Shengbang Microelectronics low power consumption can pass through high-efficiency DC buck converter

The Links:   CM30TF-12E PA050XS1

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