OB2358AP View Datasheet(PDF) - On-Bright Electronics
Part Name
Description
Manufacturer
OB2358AP Datasheet PDF : 10 Pages
| |||
OB2358
Current Mode PWM Power Switch Freq Shuffling
ELECTRICAL CHARACTERISTICS
(TA = 25℃, VDD=16V, if not otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max Unit
Supply Voltage (VDD)
Istartup
VDD Start up
VDD =14.5V,Measure
5
20 uA
Current
Leakage current into VDD
I_VDD_Operation Operation Current VFB=3V
UVLO(ON)
VDD Under
1.6
mA
8.7 9.7 10.7 V
Voltage Lockout
Enter
UVLO(OFF)
VDD Under
14.6 15.8 17.0 V
Voltage Lockout
Exit (Recovery)
OVP(ON)
Over voltage
CS=0V,FB=3V
27.0 28.5 30.0 V
protection
Ramp up VDD until gate
voltage
clock is off
VDD_Clamp
VDD Zener Clamp IDD = 10 mA
Voltage
30
V
Feedback Input Section(FB Pin)
VFB_Open
VFB Open Loop
Voltage
5.4 5.7 6.0 V
IFB_Short
FB pin short
circuit current
Short FB pin to GND and
measure current
1.45
mA
VTH_0D
Zero Duty Cycle
FB Threshold
0.8
V
Voltage
VTH_PL
Power Limiting
FB Threshold
3.7
V
Voltage
TD_PL
Power limiting
Debounce Time
50
mSec
ZFB_IN
Input Impedance
Current Sense Input(Sense Pin)
4
Kohm
Soft start time
4
ms
T_blanking
Leading edge
270
ns
blanking time
ZSENSE_IN
Input Impedance
40
Kohm
TD_OC
Over Current
From Over Current Occurs
120
nSec
Detection and
till the Gatedrive output start
Control Delay
to turn off
VTH_OC
Internal Current
Limiting
FB=3.3V
0.72 0.77 0.82 V
Threshold Voltage
Oscillator
FOSC
△f_Temp
Normal Oscillation
Frequency
Frequency
Temperature
Stability
45 50 55 KHZ
5
%
©On-Bright Electronics
-4-
Confidential
OB_DOC_DS_5800
|
|
Share Link: 