The DRV8844 provides four individually controllable 1/2-H-bridge drivers. It can be used to drive two DC motors, one stepper motor, four solenoids, or other loads. The output driver channel for each channel consists of N-channel power MOSFET’s configured in a 1/2-H-bridge configuration.
The DRV8844 can supply up to 2.5-A peak or 1.75-A RMS output current per channel (with proper PCB heatsinking at 24 V and 25°C) per H-bridge.
Separate inputs to independently control each 1/2-H-bridge are provided. To allow operation with split supplies, the logic inputs and nFAULT output are referenced to a separate floating ground pin.
Internal shutdown functions are provided for over current protection, short circuit protection, undervoltage lockout, and overtemperature.
The DRV8844 is available in a 28-pin HTSSOP package with PowerPAD (Eco-friendly: RoHS & no Sb/Br).For all available packages, see the orderable addendum at the end of the data sheet.
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|Part number||Order||Vs (Min) (V)||Vs (Max) (V)||Peak output current (A)||Number of half bridges||Control I/F||RDS(ON) (HS + LS) (mOhms)||Rating||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)||Approx. price (US$)|
||8||60||5||4||Independent 1/2-H PWM||480||Catalog||-40 to 85||HTSSOP | 28||28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)||1.75 | 1ku|
||8||38||2.8||2||Independent 1/2-H PWM||830||Catalog||-40 to 85||HTSSOP | 16||16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)||0.99 | 1ku|