The DRV8848 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.
The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. Each H-bridge includes circuitry to regulate the winding current using a fixed off-time chopping scheme. The DRV8848 is capable of driving up to 2 A of current from each output or 4 A of current in parallel mode (with proper heat sinking, at 12 V and TA = 25°C).
A low-power sleep mode is provided, which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.
Internal protection functions are provided for UVLO, OCP, short-circuit protection, and overtemperature. Fault conditions are indicated by a nFAULT pin.
|Part number||Order||Vs (Min) (V)||Vs (Max) (V)||Control I/F||Peak output current (A)||RDS(ON) (HS + LS) (mOhms)||Number of half bridges||Operating temperature range (C)||Approx. price (US$)||Rating||Package Group|
||4||18||PWM||2||900||-40 to 85||0.94 | 1ku||Catalog||HTSSOP | 16|
Independent 1/2-H PWM
|2||1000||4||-40 to 125||0.80 | 1ku||Catalog||
HTSSOP | 16
TSSOP | 16
WQFN | 16