The maximum input voltage between VI and GND in the schematic (or between IN and OUT at the device itself)

must not exceed 6.5 V. For input voltages in the range of 6.5 V to 11 V, an additional Zener-diode is

recommended (see Figure 9-14).

C(fly)

1 µF

S2

S1

S3

S4

CO

1 µF

VO (VI/2)

GND

VI

VO (VI/2)

+

Figure 9-12. Step-Down Principle

TPS60400

OUT

C1+

IN

C1-

GND

1

2

3

5

4

C(fly)

1 µF

CO

1 µF

CI

1 µF

VO (VI/2)

GND

VI

GND

Figure 9-13. Step-Down Charge Pump Connection

OUT

IN

C1–

TPS60400

C1+

GND

5

4

1

2

3

C(fly)

1 µF

5V6

CO

1 µF

CI

1 µF

VI

GND

VO – VI

GND

Figure 9-14. Step-Down Charge Pump Connection for Higher Input Voltages

10 Power Supply Recommendations

The TPS60400 device family has no special requirements for its power supply. The power supply output needs

to be rated according to the supply voltage, output voltage and output current of the TPS6040x.

TPS60400, TPS60401, TPS60402, TPS60403

SLVS324C – JULY 2001 – REVISED OCTOBER 2020

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