SY21611FHC (SY67211FHC)
Production
Dual H-bridge Stepper Motor Driver IC
Technical Documentation
| Title | Date |
|---|---|
| Automotive_Solutions_Q1_2026 | 2026-02-09 |
| Silergy_Catalog_Q1_2026 | 2026-02-09 |
| Part number | SY21611FHC |
|---|---|
| Vin (max) (V) | 16 |
| Vin (min) (V) | 2.5 |
| Number of half bridges | 2 |
| RDS(on) (HS + LS) (mΩ) | 640 |
| Peak output current (A) | 1.1 |
| Sleep current (µA) | 0.1 |
| Integrated FETs(Yes/No) | Yes |
| Control interface | HW |
| Features | Current regulation, Mixed decay, Integrated current sensing, Open circuit detection |
| Operating temperature range(°C) | -40 to 85 |
| Package | SSOP10 |
| Functional safety category |
The SY21611 is a dual H-bridge motor driver designed for use in brushed DC motors, bipolar stepper motors, solenoids, or other inductive load applications. The highly integrated H-bridge driver block consists of two H-bridges with internal logic control, a gate driver, over-current protection, and a charge pump circuit.
The SY21611 operates with a power-supply voltage range of 2.5V to 16V. It provides protection functions with a fault output pin for over-current protection, short circuit protection, and thermal shutdown. It also features a low-power standby mode.
The SY21611 is available in a compact SSOP10 package.
| Title | Date |
|---|---|
| Automotive_Solutions_Q1_2026 | 2026-02-09 |
| Silergy_Catalog_Q1_2026 | 2026-02-09 |








