OC9300英文规格书
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General Description
OC9300 is a buck type constant-current LED driver with high precision. It is suited AC 85V~265V non-isolated LED driver supply.
OC9300 operates in critical conduction mode to achieve higher efficiency.
OC9300 uses self-powered structure with built-in
NPN power transistor, and need no auxiliary
winding, which can improve cost performance.
OC9300 adopts SOP8 package, and output
current can reach 240mA. OC9300 integrates comprehensive protection
functions including over temperature protection, output over voltage protection, output short
circuit protection, open circuit protection, current
limit protection cycle-by-cycle, and VDD under voltage lockout protection and so on.
Features
y Built-in 600V NPN power transistor y Self-powered: no need auxiliary winding y Output current: up to 240mA
y High efficiency: up to 93% y Output current precision:+/-3%
y Critical conduction mode
y Over temperature protection y Short circuit protection y Open circuit/over voltage protection
y UVLO protection y SOP8 Package ,
Applications y LED lighting
y Bulb, PAR, Tube LED lamp
Typical Application
Figure 1. Typical Application of OC9300
Buck Type High Brightness LED Driver
Pin Configuration
OC930
Figure 2. Pin configuration of OC9300
Pin description
SOP8 Pin name I/O Pin description
1 OVP
I
Output
voltage
feedback
2 CS I
Current
sense
3 RX I
Connect resistor, set base current of internal
NPN power transistor
4 VDD
VDD
Power
supply
5，6 GND GND
Ground
7，8 C I/O
Collector
of
internal NPN power transistor
Absolute Maximum Ratings
parameter symbol value
unit
Maximum voltage on C pin V C_max 600 V VDD pin voltage range V VDD -0.3~6
Other pin input voltage V I -0.3~ V DD +0.3 V Maximum Power dissipation
（at 25℃）
PD 630 mW Thermal resistance （at 25℃） θJA
150
℃/W
Operating temperature T A -20~85 o
C Storage temperature
T STG -40~125 o
C Soldering temperature （less than 10 sec ） T S
D 250
o
C
ESD
ESD 2000
V
Note : Absolute maximum ratings indicate limits beyond which permanent damage to the device may occur.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Block Diagram
RX
Figure 3. Block Diagram of OC9300