SI-8205NHD
Data Sheet
Surface Mounted synchronized rectifier type Chopper Regulator IC
SI-8205NHD
Mar. 04, 2020 Rev.6.0
...
SI-8205NHD
Data Sheet
Surface Mounted synchronized rectifier type Chopper Regulator IC
SI-8205NHD
Mar. 04, 2020 Rev.6.0
SANKEN ELECTRIC CO., LTD.
SI-8205NHD
--- Contents ---
1. General Description 1-1 Features 1-2 Applications 1-3 Type
---------- 3 ---------- 3 ---------- 3
2. Specification 2-1 Package Information 2-2 Ratings 2-3 Circuit Diagram
---------- 4 ---------- 5 ---------- 7
3. Terminal Description 3-1 Terminal List 3-2 Functional Description of Terminal
---------- 8 ---------- 8
4. Operational Description 4-1 PWM Output
Voltage Control 4-2 Overcurrent Protection / Thermal Shutdown
---------- 9 ---------- 10
5. Design Notes 5-1 External Components 5-2 Pattern Design Notes 5-3 Power Supply Stability
---------- 11 ---------- 17 ---------- 19
6. Applications 6-1 Soft Start 6-2 Output ON / OFF Control 6-3 Spike Noise Reduction 6-4 Reverse Bias Protection 6-5 Operational Frequency
---------- 20 ---------- 21 ---------- 21 ---------- 22 ---------- 22
6-6 Synchronous, non-synchronous automatic selection function ---------- 24
6-7 About the operational -frequency when the output is light-load or no-load ---------- 25
6-8 About the movement mode in the light-load condition ---------- 26
2
SI-8205NHD
6-9 About the dispersion of resistance "RonH and RonL"with the internal-
MOSFET
---------- 26
7. Terminology
---------- 27
3
SI-8205NHD
1. General Description
The SI-8205NHD is a synchronized rectifier type chopper regulator IC with a built-in power MOS. Du...