SY7201 and SY7201A are DC/DC step-up converters that deliver an accurate constant current for driving LEDs. Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor. The SY7201 and SY7201A .
• Input voltage range: 2.8 to 30V
• Switch current limit 2A
• Drives LED strings up to 30V
• 1MHz fixed frequency minimizes the external
components
• Dimming frequency for EN/PWM pin:
ο SY7201: 20kHz~1MHz ο SY7201A: 100Hz~10kHz
• Internal softstart limits the inrush current
• Open LED over voltage protection
• RoHS Compliant and Halogen Free
• Compact package: SOT23-6 pin
Applications
• GPS Navigation Systems
• Handheld Devices
• Portable Media Players
Typical Applications
L
D
Vin
Cin
Dimming
IN LX EN/PWM OVP
GND
FB
R1
Figure 1. Schematic Diagram
Vout Cout
AN_SY7201/A Rev. 0.9 Sile.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | SY7200A |
Silergy |
30V High Current Boost LED Driver | |
2 | SY7201A |
Silergy |
30V High Current Boost LED Driver | |
3 | SY7208 |
Silergy |
2A Step Up Regulator | |
4 | SY7208B |
Silergy |
2A Step Up Regulator | |
5 | SY7215 |
Silergy |
15A Synchronous Step Up Regulator | |
6 | SY7220 |
SMC |
2 position single | |
7 | SY7060 |
SMC |
Flexibles Montagesystem | |
8 | SY7065 |
Silergy |
1.8V Minimum Input and 5.5V Maximum Output 5A Peak Current Synchronous Boost | |
9 | SY7065A |
Silergy |
1.8V Minimum Input and 5.5V Maximum Output 5A Peak Current Synchronous Boost | |
10 | SY7066 |
Silergy |
1.8V Minimum Input and 5.5V Maximum Output 6A Peak Current Synchronous Boost | |
11 | SY7069 |
Silergy |
1MHz Synchronous Boost | |
12 | SY7072A |
Silergy |
High Efficiency 2A Valley Current Synchronous Boost |