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OB2263 View Datasheet(PDF) - On-Bright Electronics

Part Name
Description
Manufacturer
OB2263 Datasheet PDF : 13 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
OB2263
Current Mode PWM ControllerFrequency Shuffling
ELECTRICAL CHARACTERISTICS
(TA = 25OC if not otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max Unit
Supply Voltage (VDD)
I_VDD_Startup VDD Start up
VDD =12.5V, RI=100K
3
20 uA
Current
Measure Leakage current
into VDD
I_VDD_Ops
Operation Current VDD=16V,
1.4
mA
UVLO(ON)
RI=100Kohm, VFB=3V
VDD Under Voltage
7.8 8.8 9.8 V
Lockout Enter
UVLO(OFF)
VDD Under Voltage
13 14 15 V
Lockout Exit
(Recovery)
VDD_Clamp
VDD Zener Clamp
Voltage
IVDD = 5 mA
34
V
Feedback Input Section(FB Pin)
AVCS
PWM Input Gain
ΔVFB /ΔVcs
2.0
V/V
VFB_Open
VFB Open Loop
Voltage
4.8
V
IFB_Short
FB pin short circuit Short FB pin to GND and
1.2
mA
current
measure current
VTH_0D
Zero Duty Cycle FB VDD = 16V,
Threshold Voltage RI=100Kohm
0.75 V
VTH_PL
Power Limiting FB
Threshold Voltage
3.7
V
TD_PL
Power limiting
Debounce Time
35
mSec
ZFB_IN
DC_MAX
Input Impedance
Maximum Duty
VDD=18V,
6
Kohm
75
%
Cycle
RI=100Kohm, FB=3V,
CS=0
Current Sense Input(Sense Pin)
T_blanking
Leading edge
RI = 100 Kohm
300
ns
blanking time
ZSENSE_IN
Input Impedance
40
TD_OC
Over Current
VDD = 16V,
75
Detection and
CS>VTH_OC, FB=3.3V
Control Delay
Kohm
nSec
VTH_OC
Over Current
FB=3.3V, RI=100 Kohm 0.70 0.75 0.80 V
Threshold Voltage at
zero Duty Cycle
Oscillator
FOSC
Normal Oscillation RI = 100 Kohm
60 65 70 KHZ
Frequency
f_Temp
f_VDD
RI_range
V_RI_open
Frequency
VDD = 16V,
Temperature Stability RI=100Kohm, TA -20oC
to 100 oC
Frequency Voltage VDD = 12-25V,
Stability
RI=100Kohm
Operating RI Range
50
RI open load voltage
5
%
5
%
100 150 Kohm
2
V
©On-Bright Electronics
Confidential to Micro Bridge
-5-
OB_DOC_DS_63B5
 

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