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Número de pieza | OB3330 | |
Descripción | High Performance LED Lighting Driver | |
Fabricantes | On-Bright | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de OB3330 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! OB3330
High Performance LED Lighting Driver
GENERAL DESCRIPTION
The OB3330 is power factor correction,
primary-side-control LED lighting driver with
advanced features to provide high efficiency
control for lighting applications.
OB3330 features an internal start-up timer for
stand-alone applications, an analog multiplier for
power factor correction (PFC), zero current
detectors (ZCD) to ensure transition mode (TM)
operation, a current sensing comparator with
built-in leading-edge blanking, and a totem pole
output.
OB3330 offers great protection coverage including
VCC under voltage lockout (UVLO), VCC over
voltage protection, load voltage over voltage
protection, Level selectable cycle-by-cycle current
limiting, over temperature protection, LED
open/short circuit protection and gate drive output
clamping for external power MOSFET protection.
FEATURES
Primary-Side Control with Single Stage PFC
Topology
Minimized BOM Count
Transition Mode (TM) Operation to Achieve
High Efficiency
Analog multiplier for Power Factor Correction
High Current Accuracy
Cycle-by-Cycle Current Limiting (OCP)
Selectable Threshold of OCP
VCC Over Voltage Protection
Output Over Voltage Protection
Over-temperature Protection
LED Open Circuit Protection
LED Short Circuit Protection
Soft-start
VCC Under Voltage Lockout (UVLO)
Ultra-low Start-up Current
APPLICATIONS
LED Lighting
Industrial and Commercial lighting
Residential lighting
TYPICAL APPLICATION
Figure1: OB3330 Typical Application Schematic
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_333000
1 page OB3330
High Performance LED Lighting Driver
Electrical Characteristics
VCC=16V, TA=25℃, if not otherwise noted.
Symbol
Parameter
Test Conditions
Min Typ Max Unit
Supply Voltage Section
I_VCC_ST
Standby Current
I_static
Static Current
UVLO(ON)
VCC Under Voltage Lockout Enter
UVLO(OFF) VCC Under Voltage Lockout Exit
VCC_clamp VCC Clamp Protection
VCC_OVP
VCC Over Voltage Protection
VCC=14V
VCC=16V, no switching
VCC falling
VCC rising
5 15 uA
1.5 2
mA
8 9 10 V
13.6 14.6 15.6 V
32 V
30 V
Current Sense Section
T_leb
Lead Edge Blanking Time
Td_oc
OCP Propagation Delay
IOCP_TH
Source current of OCP_TH PIN
Vth_OCP
Threshold voltage of over current
protection
Multiplier Section
Vmult
Linear Operating Range
∆Vcs/∆Vmult Output Max. Slope
K Gain
From OCP comparator
Gate drive
VCC=16V
0V<VOCP_TH<0.3V
0.3V<VOCP_TH<1.5V
VOCP_TH>1.5V
to
COMP=3V
MULT=from 0 to 0.5V,
COMP=4V
MULT=1V, COMP=2.2V
17
0 to 3
0.6
300
100
28
2.1
1.8
1.5
2.8
0.75
39
0.9
nS
ns
uA
V
V
V
V
V/V
1/V
ZCD Section
Vovp
Vzcd_low
Vth_dem_H
Vth_dem_L
Output Over Voltage Protection
ZCD Low Voltage Detection
When ZCD rise up this voltage,
demagnetization began
When ZCD drop below this voltage,
demagnetization finished
1us delay after turn off
3.8 4
4.2 V
0.9 V
0.9 V
0.3 V
Gm amplifier section
Vref EA Reference Voltage
Gm EA Transconductance Gain
Gain
DC gain
Vout
Dynamic range
Vcomp_h
Upper clamp voltage
Vcomp_l
Lower clamp voltage
Isource_max EA Maximum Source Current
Isink_max
EA Maximum Sink Current
394 400 406 mV
80 uS
60 70
dB
1.2~4.5
V
6V
1.2 V
100 uA
32 uA
Watch Dog Section
Toff_max
Re-start timer period
55 us
Toff_min
Minimum off time
3.5 us
Ton_max
Maximum on time
50 us
OTP Section
OTP_on
Over Temperature Protection
120 140 160 ℃
Gate Drive Output Section
Vol Output Low Level
VCC=16V@ Iout=100mA
1.5 V
Voh
Vclamp
Output High Level
Output Clamping Voltage
VCC=16V@ Iout=100mA
8
V
Vcc=28V
11 12.5 V
Tr Rising Edge Time
CL=1nF, 10~90%
80 150 nS
Tf Falling Edge Time
CL=1nF, 10~90%
30 70 nS
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_333000
5 Page |
Páginas | Total 10 Páginas | |
PDF Descargar | [ Datasheet OB3330.PDF ] |
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