List of Recommended External Components

Symbol

Symbol Explanation

Value

Unit

Type

C

VDD1

V

100

nF

Ceramic, X7R

C

VDD2

V

100

nF

Ceramic, X7R

C

OUT

Output Capacitor from FB to GND

10

µF

Ceramic, X7R/Y5V

C

IN

Input Capacitor from Battery Voltage to GND

10

µF

Ceramic, X7R/Y5V

C

VDDIO

V

100

nF

Ceramic, X7R

RT

Oscillator Frequency Bias Resistor

82

k

Ω

1% (Note 18)

RSO

SO Output Pull-up Resistor

100

k

Ω

C

VREF

Reference Voltage Capacitor, between V

100

nF

Ceramic, X7R

L

BOOST

Boost Converter Inductor

10

µH

Shielded, Low ESR, I

D

OUT

Rectifying Diode, V

0.3

V

Schottky Diode

RGB1

RGB LED1

User Defined

(See Application Note 1291 for resistor size calculation)

RGB2

RGB LED2

R

Current Limit Resistor

R

Current Limit Resistor

LEDs

White LEDs

Note 18: Resistor RT tolerance change will change the timing accuracy of RGB block. Also the boost converter switching frequency will be affected.

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