SY7201A Datasheet PDF Download, Silergy





(PDF) SY7201A Datasheet Download

Part Number SY7201A
Description 30V High Current Boost LED Driver
Manufacture Silergy
Total Page 11 Pages
PDF Download Download SY7201A Datasheet PDF

Features: Application Note: AN_SY7201/SY7201A 30V High Current Boost LED Driver General Description SY7201 and SY7201A are DC/ DC step-up converters that deliver an a ccurate constant current for driving LE Ds. Operation at a fixed switching freq uency of 1MHz allows the device to be u sed with small value external ceramic c apacitors and inductor. LEDs connected in series are driven with a regulated c urrent set by the external resistor. Th e SY7201 and SY7201A are ideal for driv ing up to eight white LEDs in series or up to 30V. Ordering Information SY72 01□(□□)□ Temperature Code Pac kage Code Optional Spec Code Temperatu re Range: -40°C to 85°C Ordering Num ber SY7201ABC SY7201ADC SY7201AABC Pac kage type SOT23-6 TSOT23-6 SOT23-6 Dim ming 20kHz~1MHz 20kHz~1MHz 100Hz~10kHz Features • Input voltage range: 2.8 to 30V • Switch current limit 2A • Drives LED strings up to 30V • 1MHz f ixed frequency minimizes the external c omponents • Dimming frequency for EN/PWM pin: ο SY7201: 20kHz~1MHz ο SY7201A: 100.

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Application Note: AN_SY7201/SY7201A
30V High Current Boost LED Driver
General Description
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
are ideal for driving up to eight white LEDs in series or
up to 30V.
Ordering Information
SY7201(□□)
Temperature Code
Package Code
Optional Spec Code
Temperature Range: -40°C to 85°C
Ordering Number
SY7201ABC
SY7201ADC
SY7201AABC
Package type
SOT23-6
TSOT23-6
SOT23-6
Dimming
20kHz~1MHz
20kHz~1MHz
100Hz~10kHz
Features
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 Silergy Corp. Confidential- Prepared for Customer Use Only 1

                    
           






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