XC9503B093AR Torex Semiconductor Ltd, XC9503B093AR Datasheet - Page 8

• Manufacturer Part Number: XC9503B093AR
• Description: DUAL DC/DC CONVERT CONTROL 10PIN
• Manufacturer: Torex Semiconductor Ltd
• Type: Step-Down (Buck)r

Specifications of XC9503B093AR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: 0.9 ~ 10 V
• Current - Output: 1A
• Frequency - Switching: 300kHz
• Voltage - Input: 2 ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Power - Output: 150mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5461699A

8/32
<Setting of Output Voltage>
[Typical Example]
[Example of Calculation]
■OPERATIONAL EXPLANATION (Continued)
[External Components]
When R
The same method can be adopted for channel two also.
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based
on the values of R
less.
The value of C
equal to 12kHz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and
value of load capacity (C
Tr
SD :
L
C
The same components can be adopted for both channel 1 and channel 2.
Tr
R
C
XC9503
L1
B
B
V
(V)
1.0
1.5
1.8
2.0
2.2
OUT
:
:
:
:
:
FB11
:
* MOSFET
Note: V
please be careful with the power supply voltage.
MA2Q737
CMS02
10μH
22μH
22μH
16V, 47μF (Tantalum)
Increase capacity according to the equation below when the step-up
voltage ratio is large and output current is high.
C=(C
=200k
XP162A12A6P (P-ch Power MOSFET, TOREX)
* PNP MOSFET
2SA1213 (SANYO)
500Ω ( Adjust in accordance with load & Tr.'s HFE.)
Set according to the equation below.
R
2200pF (Ceramic)
Set according to the equation below.
C
B
B1
FB1
≦ (V
L
≦
Ω
FB11
standard value)
(C
GS
R
(2
(kΩ)
220
220
330
390
and R
IN
FB2
FB11
30
π×
(R
Series
breakdown voltage of this Tr. is 12V so
-0.7) × hFE / IC-R
L
), speed-up capacitor for phase compensation, should be fzfb= 1 / (2
FB21
).
(Schottky, MATSUSHITA)
(Schottky, TOSHIBA)
(CDRH5D28, SUMIDA, FOSC = 500kHz)
(CDRH5D28, SUMIDA, FOSC = 300kHz)
(CDRH5D28, SUMIDA, FOSC = 180kHz)
FB12
R
) and R
B
=75k
×
×
FOSC
R
(I
(kΩ)
Ω
270
330
220
270
270
FB12
FB12
OUT
, V
V
OUT1
(mA) / 500mA
(R
OUT
×
EXTBH
FB22
0.7)
=0.9
=0.9
). The sum of R
×
C
×
(pF)
430
62
62
39
33
(200k+75k) / 75k=3.3V.
FB1
(R
×
FB11
V
OUT
+R
FB12
/ V
FB11
IN
V
) /R
2.5
2.7
3.0
3.3
5.0
(V)
OUT
(R
FB12
FB21
) and R
R
(kΩ)
390
360
560
200
FB11
82
FB12
(R
FB22
×π×
) should normally be 1MΩor
R
(kΩ)
220
180
240
FB12
75
18
C
FB1
×
R
FB11
C
(pF)
160
33
33
24
62
) which is
FB1