L6208

10/27

Figure 6. Charge Pump Circuit

LOGIC INPUTS

Pins CONTROL, HALF/FULL, CLOCK, RESET and CW/CCW are TTL/CMOS and uC compatible logic inputs.

The internal structure is shown in Fig. 7. Typical value for turn-on and turn-off thresholds are respectively

Pin EN (Enable) has identical input structure with the exception that the drain of the Overcurrent and thermal

protection MOSFET is also connected to this pin. Due to this connection some care needs to be taken in driving

this pin. The EN input may be driven in one of two configurations as shown in Fig. 8 or 9. If driven by an open

Ω and 5.6nF. More information on selecting the values is found in the Overcurrent

Protection section.

Figure 7. Logic Inputs Internal Structure

Figure 8. EN Pin Open Collector Driving

Figure 9. EN Pin Push-Pull Driving

D2

D1

VCP

VBOOT

D01IN1328

5V

D01IN1329

ESD

PROTECTION

5V

5V

OPEN

COLLECTOR

OUTPUT

EN

D01IN1330

ESD

PROTECTION

5V

PUSH-PULL

OUTPUT

EN

D01IN1331

ESD

PROTECTION