Silergy SY21036
The SY21036 high-efficiency synchronous stepdown DC/DC converter operates using a clockcontrol and peak-current-mode control architecture and can deliver 1A load current over a wide input voltage range from 4.5V to 40V. It integrates a main switch and a synchronous switch with low RDS(ON) to minimize the conduction loss and features very low quiescent current to achieve high efficiency under light load. The 2MHz switching frequency permits low output-voltage ripple and reduces external inductor and capacitor sizes.| Part No. | SY21036 |
|---|---|
| Datasheet | SY21036 Download |
| Manufacturer |  Silergy |
| Description | 1A Synchronous Step-Down Regulator |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The SY21036 also provides thermal shutdown, hiccup short-circuit protection, and internal soft-start to limit inrush current during power-on. The SY21036 is available in a compact SOT23-6 package.FEATURES
● 4.5 to 40V Input Voltage Range● 1A Output Current Capability
● Low RDS(ON) for Internal Switches: 380mΩ Top, 180mΩ Bottom
● 2MHz Fixed Switching Frequency
● 0.8V ±1.0% Reference Voltage
● Low Quiescent Current
● Internal Soft-Start Limits Inrush Current
● Hiccup Mode Short-Circuit Protection
● Thermal Shutdown and Auto-Recovery
● Compact Package: SOT23-6
APPLICATIONS
● LCD-TV● Set-Top Box
● Notebook
● Storage
● High-Power AP Router
● Networking Typical
APPLICATIONS
VIN CIN ON/OFF BS IN LX FB EN GND CBS L R1 R2 VOUT CFF (Opt.) COUT Figure 1. Schematic Diagram Efficiency (%) Efficiency vs. Load Current (VOUT=5V, L= 6.8µH /VLS5045EX-6R8M) 100 95 90 85 80 75 70 VIN =12 V 65 VIN =24 V 60 0.001 0.01 0.1 1 Load Current (A) Figure 2. Efficiency vs. Load Current DS_SY21036 Rev.
