Description
GND
VCC
IA2
IA1
NC
No.7633-3/9
LB1945D
Block Diagram
ENABLE2 PHASE2 SUBGND VREF2 VCC IB1 IB2
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S-GND
Control logic circuit
Current selection circuit
VBB2 Blanking time OUTB E2 OUTB D-GND
VBB1
Thermal shutdown circuit
OSC
CR
D-GND OUTA E1 OUTA Blanking time
Control
Features
- PWM current control (external clock).
- Digital load current selection function (supports 1-2, W1-2, and 2-phase excitation).
- Built-in high and low side diodes.
- Simultaneous on state prevention function (through-current prevention).
- Built-in thermal shutdown circuit.
- Noise canceling function
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Motor supply voltage Output peak current Output continuous current Logic system supply vol.
LB1945D Datasheet
