S-8365AAABA-M5T1Y2 Datasheet, PDF (31/63 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
6. Circuit for low power supply voltage applications
Following shows a circuit example that starts up by using a dry cell (1.2 V) and its characteristics.
C_IN C_DD
L
VDD
ON/OFF
EXT
S-8365/8366 _FB
Series
VSS
Cb
Q1
Rb
SD
R_FB1
R_FB2
V_OUT
C_FB
C_OUT
Figure 25 Circuit Example (Circuit for Low Power Supply Voltage Applications)
Table 19 External Part Examples (Circuit for Low Power Supply Voltage Applications) (1 / 2)
Condition
Output
Voltage
IC Product
Name
L Product Name
Q1
Product
Name
SD Product Name
1
3.32 V
S-8366AAAAA VLF3010ST-2R2M 2SD2652
RB070M-30TR
2
3.32 V
S-8366ABAAA VLF3010ST-3R3M 2SD2652
RB070M-30TR
Table 19
Condition
1
2
External Part Examples (Circuit for Low Power Supply Voltage Applications) (2 / 2)
CIN Product Name
COUT Product Name
RFB1
RFB2
CFB
CDD
JMK107BJ106MA-T
LMK212BJ106KD-T × 1
68 kΩ 15 kΩ 68 pF 0.1 μF
JMK107BJ106MA-T
LMK212BJ106KD-T × 1
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.
31