RY3750
RY3750 is Step-Up Converter manufactured by RYCHIP.
Features
- 2.5V to 5.5V Input Voltage
- 1.23V Feedback Voltage
- 1.2MHz Fixed Switching Frequency
- Internal 0.6A Switch Current Limit
- Internal pensation
- Thermal Shutdown
- Available in a 5-pin SOT-23 package
Applications
- Camera Flash White LED
- Digital still cameras
- PDA LED back light
General Description
The Y3750 is a step-up converter. Its 1.23V feedback voltage reduces power loss and improves efficiency. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Internal soft start function can reduce the inrush current. Tiny package type provides the best solution for PCB space saving and total BOM cost.
Typical Application Circuit
L1
ON/
CIN OFF
FB EN
D1 R1 CFF
R2
VOUT
COUT
Figure1. Basic Application Circuit
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1.2MHz, 30V, Step-Up Converter
Package and Pin Description
TOP VIEW
LX 1
5 IN
GND 2
FB 3
4 EN
SOT23-5 Top Marking: KFYLL (device code: KF, Y=year code, LL= lot number code)
Pin
Name
Function
Power Switch Output. LX is the drain of the internal MOSFET switch. Connect...
