ISB (Integrated System in Board): original SiP(System in Package) technology
Super thin and small 1ch DC/DC converter IC SR Series
- [Features and Functions]
- Size 3.4×3.4×0.75mm³ / 3.09×2.8×0.75mm³
- It is advantageous for efficiency and the characteristic such as the output ripples because it is possible to wire by the beeline between parts and parts. Moreover, the mounting area can be decreased compared with the discrete part composition.
- Controllable Output voltage by external resistance.
- Built-in stand-by function.
- PWM/PFM Automatic Switching Control or Manual Switching Control
- Oscillation Frequency: 100kHz, 180kHz, 300kHz, 500kHz
[SR Series Internal Equivalent Circuit Diagram]

| Type No. | Status | External dimensions [mm] |
DC-DC controller IC | MOSFET | SBD | Output configuration* [V] |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Control system | Input voltage range [V] |
Oscillation frequency typ [kHz] |
Efficiency typ |
VDSS [V] |
ID [A] |
VRRM [V] |
IO [A] |
||||
| SR10020 | 3.4×3.4×0.75 | PWM/PFM automatic switching | 0.9-10 | 300 | 0.85 | 30 | 2.5 | 30 | 1 | 1.5-20 | |
| SR10030 | 3.4×3.4×0.75 | PWM/PFM manual switching | 0.9-10 | 180 | 0.85 | 30 | 2.5 | 30 | 1 | 1.5-20 | |
| SR10040 | 3.4×3.4×0.75 | PWM/PFM automatic switching | 0.9-10 | 500 | 0.85 | 30 | 2.5 | 30 | 1 | 1.5-20 | |
| SR10050 | 3.4×3.4×0.75 | PWM/PFM automatic switching | 0.9-10 | 500 | 0.85 | 30 | 2.5 | 15 | 2 | 1.5-10 | |
| SR10060 | 3.4×3.4×0.75 | PWM/PFM manual switching | 0.9-10 | 100 | 0.85 | 20 | 3 | 30 | 1 | 1.5-13 | |
| SR10070 | 3.4×3.4×0.75 | PWM/PFM manual switching | 0.9-10 | 300 | 0.85 | 20 | 3 | 15 | 2 | 1.5-10 | |
| SR10110 | 3.4×3.4×0.75 | PWM fixed | 2.0-10 | 100 | 0.84 | 20 | 2 | 15 | 1 | 2.0-10 | |
| SR10210 | 3.4×3.4×0.75 | PWM fixed | 2.0-10 | 100 | 0.84 | 20 | 2 | 15 | 1 | 1.5 fixed | |
| SR10310 | 3.09×2.8×0.75 | PWM/PFM exeternally switching | 0.9-10 | 100 | TBD | 20 | 3 | 30 | 1 | 1.5-13 | |
| SR10320 | 3.09×2.8×0.75 | PWM/PFM exeternally switching | 0.9-10 | 180 | TBD | 20 | 3 | 30 | 1 | 1.5-13 | |
| SR10330 | 3.09×2.8×0.75 | PWM/PFM exeternally switching | 0.9-10 | 300 | TBD | 20 | 3 | 30 | 1 | 1.5-13 | |
*We recommend that the maximum value of the output voltage is less than 1/1.5 times VDSS and VRRM.
Moreover, please confirm each rated voltage is not exceeded in actual use.