| Part number | SA33101HSP |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 4 |
| Vin (max) (V) | 36 |
| Topology | Buck |
| Switching frequency (min)(kHz) | 200 |
| Switching frequency (max)(kHz) | 1000 |
| Vout (min) (V) | 0.7 |
| Vout2 (min)(V) | |
| Vout (max) (V) | 5.3 |
| Vout2 (max )(V) | |
| Vref accuracy (±%) | 2 |
| Vout accuracy(±%) | |
| Control mode | Current mode fix frequency |
| Duty cycle (max)(%) | 94 |
| Operation mode | PFM/FCCM |
| Iq (typ) (uA) | 8 |
| Features | Suport PLL/PFM/FCCM,Controller |
| Package | SSOP-18E |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
The SA33101 is a synchronous step-down controller that can generate output voltages from 0.7V to 5.3V by driving the external high/low side NMOS. The user-settable switching frequency can be adjusted from 250kHz to 1.0MHz through an external resistor, and can be synchronized with an external clock. The device supports three operating modes: PWM mode, PLL PWM mode and PFM mode. These modes can be selected under the conditions of the MODE pin. In particular, the automatic PFM mode increases efficiency under light load conditions.
The SA33101 has the protection functions including cycle by cycle current limit function, UVD (Under Voltage Detection), OVD (Over Voltage Detection), OVP (Over Voltage Protection), SCP (Short Circuit Protection) and thermal shut down. Also, the PGOOD (Power Good) pin provides the status of output.
The CLKOUT Pin of SA33101 is equipped with phase shift 180°function to meet the multiphase application. For EMI reduction purpose, spread-spectrum clock generator for diffused oscillation frequency at the PWM operation is available.
The SA33101 is available in SSOP18E package.
Photo of evaluation board
Photo of evaluation board
The EVB_SA33101HSP is intended for evaluating Buck CV Controller 40V Input, Automotive Application
| Title | Date |
|---|---|
| Automotive_Solutions_Q1_2026 | 2026-03-06 |
| Silergy_Catalog_Q1_2026 | 2026-02-09 |
