DocID15086 Rev 4

5/21

PM8834

Pin description and connections

21

DocID15086 Rev 4

5/21

PM8834

Pin description and connections

21

2

Pin description and connections

Figure 2. Pin connections (top view)

2.1

Pin description

Table 2. Pin description

Pin no.

Name

Function

1

ENABLE_1

Enable input for Driver 1. Pull low to disable Driver 1 (OUT1 will be low, PWM1 will be

ignored). Even though internally pulled up to VCC with a typ. 100 k

 internal resistor, it is

recommended to pull high up directly to VCC externally to enable the section.

Enable pin is a device state control pin and must be set before to apply the PWM signal.

The pin features TTL/CMOS-compatible thresholds.

2PWM_1

PWM input signal for Driver 1 featuring TTL/CMOS-compatible threshold and hysteresis.

Even though internally pulled down to GND with a 10 μA current generator, it is

recommended to pull-down to GND with an external 100 kΩ resistor.

3GND

All internal references, logic and drivers are referenced to this pin. Connect to the PCB

ground plane.

4PWM_2

PWM input signal for Driver 2 featuring TTL/CMOS-compatible threshold and hysteresis.

Even though internally pulled down to GND with a 10 μA current generator, it is

recommended to pull-down to GND with an external 100 kΩ resistor.

5OUT_2

Driver 2 output. The output stage is capable of providing up to 4 A drive current to the gate

of a power MOSFET. IGBTs are supported as well. A low ohmic value series resistor can be

useful to reduce dissipated power.

6

VCC

PM8834 supply voltage. Bypass with low ESR MLCC capacitor to GND.

7OUT_1

Driver 1 output. The output stage is capable of providing up to 4 A drive current to the gate

of a power MOSFET. IGBTs are supported as well. A low ohmic value series resistor can be

useful to reduce dissipated power.

8

ENABLE_2

Enable input for Driver 2. Pull low to disable Driver 2 (OUT2 will be low, PWM2 will be

ignored). Even though internally pulled up to VCC with a typ. 100 k



internal resistor, it is

recommended to pull high up directly to VCC externally to enable the section.

Enable pin is a device state control pin and must be set before to apply the PWM signal.

The pin features TTL/CMOS compatible thresholds.

PM8834M only

EXP PAD

The thermal pad connects the silicon substrate and makes good thermal contact with the

PCB. Use multiple vias to connect it to the GND plane.