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Parametric Search - Switching Regulators
SII's Switching Regulator Controllers with the high efficiency, convert the input voltage to the output voltage that you want to fix. We offer three types of switching regulator controllers: step-up (boost), step-down (buck), and step-up/down (boost/buck) switching regulator controllers.
PWM types are highly efficient to output low ripple and low noise. PFM types feature high efficiency even during light loads. PWM/PFM switchable types use PFM for light loads, and automatically switch to PWM control for heavy loads.
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| No. | Model No. | Data Sheet | Type | FET | Control Method | Input Voltage Range | Output Voltage | Output Accuracy | Switching Frequency | Current Consumption (operating) | Current Consumption (power-off) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | S-8351/ 8352 series |
|
Step-up | Built-in / External | PFM | 0.9 to 10V |
2.0 to 6.5V (A, B, C) 1.5 to 6.5V (D) |
±2.4% | 100 kHz |
23.2 µA (3.3V) |
0.5 µA max. |
SOT-23-3
SOT-23-5 SOT-89-3 |
| 2 | S-8353/ 8354 series |
|
Step-up | Built-in |
PWM, PWM/PFM switchover |
0.9 to 10V |
1.5 to 6.5V (Vdd/Vout sep.) 2.0 to 6.5V (the others) |
±2.4% | 30, 50, 250 kHz |
18.7 µA (3.3V, 50KHz) |
0.5 µA max. |
SOT-23-3
SOT-23-5 SOT-89-3 |
| 3 | S-8363 Series |
|
Step-up | Built-in |
PWM/PFM switchover |
0.9 to 4.5V | 1.8 to 5.0V | - | 1.2 MHz | 450 µA | 3.0 µAMax. |
SOT-23-6
SNT-6A |
| 4 | S-8355/ 56/57/58 series |
|
Step-up | External |
PWM, PWM/PFM switchover |
0.9 to 10V |
1.5 to 6.5V (Vdd/Vout sep.) 2.0 to 6.5V (the others) |
±2.4% | 100, 250, 300, 600 kHz | 25.9 µA (3.3 V, 100 KHz) | 0.5 µA max. |
SOT-23-3
SOT-23-5 SOT-89-3 6-pin SNB (B) |
| 5 | S-8365/8366 series |
|
Step-up | External |
PWM, PWM/PFM switchover |
1.8 to 5.5V | Desired output voltage via external resistor | - | 1.2 MHz, 600 kHz | 300 µA (3.3V, 600 KHz) | 1.0 µA max. |
SOT-23-6
SNT-6A SOT-23-5 |
| 6 | S-8340/ 8341 series |
|
Step-up | External |
PWM, PWM/PFM switchover |
0.9 to 6.0V | 2.5 to 6.0V | ±2.0% | 300, 600 kHz |
350 µA (3.3V, 600KHz) |
3.0 µA max. |
8-pin TSSOP
|
| 7 | S-8337/ 8338 series |
|
Step-up | External | PWM | 1.8 to 6.0 V | Desired output voltage via external resistor | - | 286 kHz to 1.133 MHz via external resistor |
400 µA (700KHz, VFB =0.95V) |
1 µA max. |
8-pin SON (A)
8-pin TSSOP |
| 8 | S-8333 series |
|
Step-up | External | 1 channel for LCD | 1.8 to 6.0 V | Desired output voltage via external resistor | - | 286 kHz to 1.133 MHz via external resistor |
450 µA (700KHz, VFB =0.95V) |
- |
SNT-8A
8-pin TSSOP |
| 9 | S-8330/ 8331 series |
|
Step-up | External | 1 channel for LCD | 2.0 to 9.0V | Maximum output voltage: 20 to 30V | ±2.4% | 50, 180 kHz | 100 µA (Vin=5V, 180KHz) | 1 µA max. |
8-pin SSOP
|
| 10 | S-8550/ 8551 series |
|
Step-down | Built-in | PWM | 2.0 to 5.5 V | 1.1 to 4.0V | - | 1.2 MHz | 200 µA | 1 µA max. |
SOT-23-5
SNT-8A |
| 11 | S-8520/ 8521 series |
|
Step-down | External |
PWM, PWM/PFM switchover |
2.5 to 10/16 V | 1.5 to 6.0V | ±2.4% | 60, 180, 300 kHz |
60 µA (180KHz) 21 µA (60KHz) 100 µA (300KHz) |
0.5 µA max. |
SOT-23-5
|
| 12 | S-8540/ 8541 series |
|
Step-down | External |
PWM, PWM/PFM switchover |
2.5 to 10 V | 1.5 to 6.0 V | ±2.0% | 300, 600 kHz |
180 µA (600KHz) 140 µA (300KHz) |
1µA max. |
8-pin MSOP
|
| 13 | S-8533 series |
|
Step-down | External | PWM syncronous rectification | 2.7 to 16 V | 1.25, 1.3 to 6.0 V | ±2.0% | 300 kHz | 30 µA | 1 µA max. |
8-pin TSSOP
|