STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8540/8541 Series

28



Reference Data

This reference data is intended to help you select peripheral components to be externally connected to the

IC. Therefore, this information provides recommendations on external components selected with a view to

accommodating a wide variety of IC applications. Characteristic data is duly indicated in the table below.

Table 9. External components list for efficiency

No. Product Name

Output

Voltage

Modulation

Inductor

Transistor

Diode Output Capacitor

1.1 S-8540A33FN

3.3 V

PWM

600kHz LDR655312T-4R7 CPH6301 RB491D F920J476MB

× 2

1.2 S-8541A33FN

PWM/PFM

1.3 S-8540A25FN

2.5 V

PWM

1.4 S-8541A25FN

PWM/PFM

1.5 S-8540A18FN

1.8 V

PWM

1.6 S-8541A18FN

PWM/PFM

Table 10 External components list for efficiency

No. Product Name

Output

Voltage

Modulation

Inductor

Transistor

Diode Output Capacitor

1.7 S-8540C33FN

3.3 V

PWM

300kHz CDRH6D28-220

CPH6301 RB491D F931A476MC

× 1

1.8 S-8541C33FN

PWM/PFM

1.9 S-8540C25FN

2.5 V

PWM

1.10

S-8541C25FN

PWM/PFM

1.11

S-8540C18FN

1.8 V

PWM

1.12

S-8541C18FN

PWM/PFM

Table 11 External components list for ripple voltage

No.

Product

Name

Output

Voltage

Modulation

Inductor

Transistor

Diode

Output

Capacitor

2.1

S-8540A33FN

3.3 V

PWM

600kHz LDR655312T-4R7 CPH6301 RB491D F920J476MB

× 2

2.2

S-8541A33FN

PWM/PFM

2.3

S-8540A18FN

1.8 V

PWM

2.4

S-8541A18FN

PWM/PFM

2.5

S-8540C33FN

3.3 V

PWM

300kHz CDRH6D28-220 CPH6301 RB491D F931A476MC

× 1

2.6

S-8541C33FN

PWM/PFM

2.7

S-8540C18FN

1.8 V

PWM

2.8

S-8541C18FN

PWM/PFM