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Capacitance

5.56pF

Capacitance

10uF

SOLAR

3.3V

Capacitance

4.7uF

USB

3.3V

BATT

12/5V

Capacitance

10uF

BATT

Capacitance

4.7uF

BATT

SOLAR

Capacitance

22uF

Resistance

5.26kΩ

Resistance

13.64kΩ

Inductance

2.2uH

Resistance

120kΩ

Resistance

540kΩ

Resistance

2kΩ

Resistance

100kΩ

Resistance

500 Ω

SW1

IC1

Reviews

Project Name

History change playground 7ca2 89f6

Description

This is a power management board which supports solar (4.4V - 6V), USB (5V) and Battery (3.2 - 4.2V) Supports battery recharging by either the solar or USB. The output should be 3.3V at 1A, 5V at 600mA and 12V at 500mA The project uses switching regulators and has 3 independent rails for the 3 outputs.

#templates #iot #powermanagement

Properties

Connectivity

USB, 2 Terminal blocks

Operating Voltage

1.8V to 3.3V

Operatin…umidity

10% to 90%

Compliance

RoHS, FCC, CE

Operatin…re Range

-10°C to 70°C

Human Interface

Use SPDT switch to toggle between 5V and 12V outputs

Form Factor

IoT

Output Voltage

5V at 0.6A, 3.3V at 1A, 12V at 0.5A

Power Sources

USB, Battery, Solar

Protecti…chanisms

- Overvoltage Protection - Overcurrent Protection - Short-Circuit Protection

Domain A…lication

Consumer Electronics

Quiescent Current

< 1mA

Performa… Metrics

- Ripple and Noise: ≤ 50mV peak-to-peak for 3.3V and 5V outputs, ≤ 120mV peak-to-peak for 12V output - Start-up Time: ≤ 50ms

BATT VIN(min)

3.0

BATT VIN(max)

4.2

Input Selection

Prioritize USB over Solar when both are available.

SOLAR VIN(min)

Battery Chemistry

Compatible with both Lithium-Ion (Li-Ion) and Lithium Polymer (Li-Po)

SOLAR VIN(max)

USB VIN

Charging Circuit

Use CN3063 for single-cell battery charging

3.3V Output

Use RT8059GJ5 for buck conversion

5V Output

Use MT3608 for boost conversion, switchable with 12V

12V Output

Use MT3608 for boost conversion, switchable with 5V

Pricing & Availability

Distributor	Qty 1
Arrow	$1.79–$2.23
Digi-Key	$4.01–$4.72
LCSC	$2.55
Mouser	$3.87
Verical	$1.77–$2.24

Controls

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playground / History change playground 7ca2 89f6

Schematic