XC9221C09AMR Torex Semiconductor Ltd, XC9221C09AMR Datasheet - Page 10

• Manufacturer Part Number: XC9221C09AMR
• Description: DC/DC STEP DOWN, ADJ 16V, 1MHZ, SMD
• Manufacturer: Torex Semiconductor Ltd

Specifications of XC9221C09AMR

• Primary Input Voltage: 16V
• No. Of Outputs: 1
• Output Voltage: 12V
• Output Current: 3A
• Voltage Regulator Case Style: SOT-25
• No. Of Pins: 5
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10/21
■OPERATIONAL EXPLANATION (Continued)
XC9220/9221
● Setting of Coil Value
However, the more current change in each pulse becomes larger, the more output ripple voltage becomes
higher when dropout voltage is high.
inductance value will make Ipk_AC small, and it makes output stable.
Ipk_AC = (V
L: Coil inductance value
FOSC: Oscillation frequency
Please do not exceed the coil rating. Coil peak current is determined by the following equation.
Ipk = I
Recommended inductance value of coil by oscillation frequency is shown in the chart below.
OUT
FOSC (kHz)
+ Ipk_AC / 2
1000
300
500
IN
– V
OUT
) x V
OUT
Series
/ (V
IN
L (uH)
22.0
10.0
4.7
x L x FOSC)
This may lead to instability.
In this case,
increasing the coil