Stepping motor drive circuit

Example of stepping motor drive circuit for HVAC

Power supply ON/OFF control and reverse connection protecting circuit (N-ch method)

Lineup

Stepping motor driver

Part number

TB9120AFTG

Package

P-VQFN28-0606-0.65-002

6 x 6 mm

Wettable frank package contributes to good solderability.

Output device

Built-in MOSFETs for 1 A class

Output MOSFET on-resistance 

0.8 Ω (Typ.) (High side + Low side, Ta = 25 °C)

Detection circuit

Over current, over temp., stall detection and load open

Standby function

Current consumption less than 10 μA in standby mode

Built-in a standby pin

Power supply IC (for MCU)

Part number

TB9005FNG

Package

SSOP20-P-225-0.65A

(6.4 x 7.0 mm)

Current consumption ICC (Typ.) [μA]

90 (@VIN = 12 V, Ta = 25 °C)
Load stability VLOAD (Max) [%] 1 (@ILOAD = 1 to 300 mA)

Function

Number of outputs

1ch (5 V)

Circuit type External transistor type
WDT, Overcurrent limitation

Contacts

Technical inquiry

Contact us

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Frequently Asked Questions

FAQs
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