XCL211 Datasheet, PDF (6/16 Pages) Torex Semiconductor – 3.1mm×4.7mm, h=1.3mm

XCL211/XCL212 series
■TYPICAL APPLICATION CIRCUIT
VOUT
VIN
CIN1
VCE
L2
PVIN
AVIN
CIN2
CE
L1
C_FB
R1
LX
CL
FB
GND
R2
NOTE:
The integrated Inductor can be used only for this DC/DC converter. Please do not use this inductor for other reasons.
【External Components】
VALUE
10V/10μF
CIN1
CL
10V/22μF
CIN2
16V/1μF
PRODUCT NUMBER
LMK212ABJ106KG (TaiyoYuden)
LMK212AB7106MG (TaiyoYuden)
C2012JB1A106K125AC (TDK)
C2012X7R1A106K125AC (TDK)
LMK212BBJ226MG (TaiyoYuden)
C2012JB1A226M125AB (TDK)
EMK107BJ105KA (TaiyoYuden)
EMK107B7105KA (TaiyoYuden)
C1005JB1C105K050BC (TDK)
C1005X5R1C105K050BC (TDK)
C1608X7R1C105K080AC (TDK)
NOTE:
The minimum value of the C_IN1 should be 10μF, and it is optimum to set a capacitance value depends on the input impedance.
The value of the C_L should be within the range from 20μF to 47μF.
<Output Voltage Setting>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of
RFB1 and RFB2. The sum of RFB1 and RFB2 should normally be 100kΩ or less. Output voltage range is 0.9V~5.5V by a 0.8V (±2.0%)
reference voltage. When input voltage (V_IN) ≦setting output voltage, output voltage (V_OUT) can not output the power more than input voltage (V_IN).
VOUT = 0.8 x (R1 + R2) / R2
The value of C_FB, speed-up capacitor for phase compensation, should be f_ZFB= 1 / (2 x π x CFB x RFB1) which is equal to 20kHz. Adjustments
are required from 1kHz to 10kHz depending on the application, value of inductance (L), and value of load capacitance (C_L).
[Example of calculation]
When R_FB1=47kΩ, R_FB2=15kΩ, VOUT=0.8×(47kΩ+15kΩ) / 15kΩ =3.3V
When C_FB=330pF, fzfb= 1/(2×π×330pF×47 kΩ) =10.26kHz
VOUT
(V)
1.0
1.2
1.5
1.8
RFB1
(kΩ)
7.5
15
26
30
RFB2
(kΩ)
30
30
30
24
CFB
(pF)
2000
1000
560
510
VOUT
(V)
2.5
3.0
3.3
5.0
RFB1
(kΩ)
51
33
47
43
RFB2
(kΩ)
24
12
15
8.2
6/16
CFB
(pF)
300
470
330
390