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collinsemasi

collinsemasi

Hi there?

flux

Hi! How can I help with your Power Management Board today?
collinsemasi

collinsemasi

who am i?

flux

You’re collinsemasi, an Electrical Engineering user on Flux.
You’re currently viewing the Power Management Board project owned by emasicollins.
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U2 VSS - U3 GND
Q2 S - Q3 S
GND
F2 P2 - D2 C
Q2 S - Q3 S
J2 VBUS_A - J2 VBUS_B
Q1 D - D1 K
Q1 D - D1 K
J2 CC1 - R4 P1
Q2 G - R6 P1
F2 P2 - D2 C
Q1 G - R3 P1
F1 2 - Q1 S
GND
J1 VCC - F1 1
GND
J2 CC2 - R5 P1
J2 VBUS_A - J2 VBUS_B
D2
J1
D1
Q2
Q1
J2

Power Management Board

Power Management Board thumbnail
Production-grade power management board with protected 9-18V barrel input, auxiliary USB-C 5V sink input, TPS5430 5V buck rail, BQ24074 single-cell Li-ion power-path charging, and MIC5504 3.3V battery-backed output.

Properties

1S Li-ion/LiPo with NTC support

9-18V DC primary input; 5V USB-C auxiliary sink input

Default charger mode is USB500; charge current set by R7=1.8k to about 494mA; termination target about 50mA with R12=3k; charger current is intentionally conservative because USB and barrel share the same charger-input OR-ing node

LCSC, Digi-Key, Mouser

5V main rail up to 2A from buck; 3.3V battery-backed rail from charger OUT

Pricing & Availability

Distributor

Qty 1

Arrow

$0.41–$1.41

Digi-Key

$0.53–$1.28

LCSC

$4.84–$5.01

Mouser

$1.50

TME

$1.19

Verical

$0.33–$1.32

Controls