OB2263
Current Mode PWM ControllerFrequency Shuffling
ESD INFORMATION
Symbol
HBM
MM
Parameter
Human Body Model
Machine Model
Test Conditions
MIL-STD
JEDEC-STD
Min
Typ
3
150
Max
Unit
KV
V
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
Current
VDD =12.5V, RI=100K
Measure Leakage current
into VDD
3
20
uA
I_VDD_Ops
UVLO(ON)
UVLO(OFF)
Operation Current
VDD=16V,
RI=100Kohm, VFB=3V
1.4
8.8
14
mA
V
VDD Under Voltage
Lockout Enter
VDD Under Voltage
Lockout Exit
7.8
13
9.8
15
V
(Recovery)
VDD_Clamp
VDD Zener Clamp
Voltage
IVDD = 10 mA
34
V
Feedback Input Section(FB Pin)
AVCS
VFB_Open
PWM Input Gain
VFB Open Loop
Voltage
2.0
4.8
V/V
V
ΔVFB /ΔVcs
IFB_Short
VTH_0D
VTH_PL
TD_PL
FB pin short circuit
current
Short FB pin to GND and
measure current
VDD = 16V,
0.8
mA
V
Zero Duty Cycle FB
Threshold Voltage
Power Limiting FB
Threshold Voltage
Power limiting
Debounce Time
Input Impedance
Maximum Duty
Cycle
0.75
RI=100Kohm
3.7
35
V
mSec
ZFB_IN
DC_MAX
6
75
Kohm
%
VDD=18V,
RI=100Kohm, FB=3V,
CS=0
Current Sense Input(Sense Pin)
T_blanking
Leading edge
RI = 100 Kohm
300
ns
blanking time
Input Impedance
Over Current
ZSENSE_IN
TD_OC
40
75
Kohm
nSec
VDD = 16V,
Detection and
Control Delay
Over Current
Threshold Voltage at
zero Duty Cycle
CS>VTH_OC, FB=3.3V
VTH_OC
FB=3.3V, RI=100 Kohm
RI = 100 Kohm
0.70
60
0.75
65
0.80
70
V
Oscillator
FOSC
Normal Oscillation
Frequency
KHZ
©On-Bright Electronics
Confidential
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OB_DOC_DS_63B2
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