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PDF OB2283 Datasheet ( Hoja de datos )

Número de pieza OB2283
Descripción High Performance Current Mode PWM Controller
Fabricantes On-Bright Electronics 
Logotipo On-Bright Electronics Logotipo
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OB2283 datasheet

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OB2283 pdf
OB2283
High Performance Current Mode PWM Controller
ELECTRICAL CHARACTERISTICS
(TA = 25, VCC=18V, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max
Supply Voltage (VDD)
Istartup
VCC Start up Current
VCC=UVLO(OFF)-1V,
measure
leakage
current into VCC
I_VCC_Operation Operation Current
VDD=18V,CS=4V,
FB=3.5V,measure
I(VCC)
I_VCC_Burst
Burst Current
CS=0V,FB=0.5V,
measure I(VCC)
UVLO(ON)
VCC Under Voltage Lockout
Enter
7
UVLO(OFF)
VCC Under Voltage Lockout
Exit (Recovery)
19
Vpull-up
Pull-up PMOS active
OVP
VCC Over Voltage
threshold voltage
Protection
FB=3V,CS=0V. Slowly
ramp VCC, until no
gate switching.
29
Vlatch_release
Latch release voltage
3 10
2.5 3
0.55 0.65
89
21 23
10
30 31
5
Feedback Input Section(FB Pin)
VFB_Open
VFB Open Loop Voltage
Avcs
PWM input gain VFB/VCS
Maximum
cycle
duty Max duty cycle @
VCC=18V,VFB=3V,VCS=0V
75
Vref_green
The threshold enter green mode
Vref_burst_H
The threshold exits burst mode
Vref_burst_L
The threshold enters burst
mode
IFB_Short
FB pin short circuit current
Short FB pin to GND
and measure current
VTH_OLP
Open loop protection, FB
Threshold Voltage
Td_OLP
Open loop protection,
Debounce Time
ZFB_IN
Input Impedance
Current Sense Input(CS Pin)
SST_CS
Soft start time for CS peak
T_blanking
Leading edge blanking time
Td_OC
Over Current
Control Delay
Detection
From Over Current
and Occurs till the Gate
driver output start to
turn off
VTH_OC
Internal Current Limiting
Threshold Voltage with zero
duty cycle
0.43
VTH_OC_Clamp OCP CS voltage clamper
5.1
3.5
78
1.85
1.33
1.23
0.3
4.4
15
16
4
250
90
0.45
0.69
81
0.47
Vdiode_scp
Diode short protection voltage
1.4
Unit
uA
mA
mA
V
V
V
V
V
V
V/V
%
V
V
V
mA
V
ms
Kohm
ms
ns
ns
V
V
V
Td_dio
Diode short debounce time
8 Cycles
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_228300

5 Page

OB2283 arduino
OB2283
High Performance Current Mode PWM Controller
IMPORTANT NOTICE
RIGHT TO MAKE CHANGES
On-Bright Electronics Corp. reserves the right to make corrections, modifications, enhancements,
improvements and other changes to its products and services at any time and to discontinue any product
or service without notice. Customers should obtain the latest relevant information before placing orders
and should verify that such information is current and complete.
WARRANTY INFORMATION
On-Bright Electronics Corp. warrants performance of its hardware products to the specifications
applicable at the time of sale in accordance with its standard warranty. Testing and other quality control
techniques are used to the extent it deems necessary to support this warranty. Except where mandated
by government requirements, testing of all parameters of each product is not necessarily performed.
On-Bright Electronics Corp. assumes no liability for application assistance or customer product design.
Customers are responsible for their products and applications using On-Bright’s components, data sheet
and application notes. To minimize the risks associated with customer products and applications,
customers should provide adequate design and operating safeguards.
LIFE SUPPORT
On-Bright Electronics Corp.’s products are not designed to be used as components in devices intended to
support or sustain human life. On-bright Electronics Corp. will not be held liable for any damages or
claims resulting from the use of its products in medical applications.
MILITARY
On-Bright Electronics Corp.’s products are not designed for use in military applications. On-Bright
Electronics Corp. will not be held liable for any damages or claims resulting from the use of its products in
military applications.
©On-Bright Electronics
Confidential
- 11 -
Preliminary Datasheet
OB_DOC_DS_228300

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