S-8365AAABA-M5T1Y2 Datasheet, PDF (29/63 Pages) Seiko Instruments Inc – PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.2.1_01
S-8365/8366 Series
4. Power supply for high output current
Following shows a circuit example and its characteristics for outputting 3.3 V from two dry cells (1.8 V) and
satisfying IOUT = 800 mA.
L
SD
V_OUT
C_IN C_DD
VDD
ON/OFF
EXT
S-8365/8366
Series
FB
CSP
VSS
M1
CSP
R_FB1
RFB2
C_FB
C_OUT
Figure 24 Circuit Example (Power Supply for High Output Current)
Table 18 External Part Examples (Power Supply for High Output Current) (1 / 2)
Condition
Output
Voltage
IC Product Name L Product Name
M1 Product
Name
SD Product
Name
1
3.32 V
S-8365AABBA NR6028T2R2M Si2312BDS RB050LA-30
2
3.32 V
S-8365ABBBA LTF5022-3R3M Si2312BDS RB050LA-30
3
3.32 V
S-8366AABBA NR6028T2R2M Si2312BDS RB050LA-30
4
3.32 V
S-8366ABBBA LTF5022-3R3M Si2312BDS RB050LA-30
Table 18 External Part Examples (Power Supply for High Output Current) (2 / 2)
Condition CIN Product Name
COUT Product Name
RFB1
RFB2
CFB
CDD
1
C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 kΩ 68 pF 0.1 μF
2
C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 kΩ 82 pF 0.1 μF
3
C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 kΩ 68 pF 0.1 μF
4
C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 kΩ 82 pF 0.1 μF
Caution The above connection will not guarantee successful operation. Perform thorough evaluation
using an actual application to set the constant.
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