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PDF OB2288 Datasheet ( Hoja de datos )

Número de pieza OB2288
Descripción Highly Integrated Current Mode PWM Controller
Fabricantes On-Bright Electronics 
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OB2288 datasheet

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OB2288 pdf
OB2288
Highly Integrated Current Mode PWM Controller
ELECTRICAL CHARACTERISTICS
(TA = 25OC, RI=20K ohm, VDD=16V, if not otherwise noted)
Symbol
Parameter
Test Conditions
Supply Voltage (VDD) Section
I_VDD_Startup VDD Startup Current VDD =13.5V
I_VDD_Ops
UVLO(Enter)
Operation Current
VDD Under Voltage
Lockout Enter
VFB=3V
UVLO(Exit)
VDD Under Voltage
Lockout Exit
OVP
VDD Over Voltage
Protection
TD_OVP
VDD OVP Debounce
Time
VDD_De-Latch Latch Release
Voltage Threshold
I_VDD_Latch
VDD Current at
Latch Shutdown
VDD=8V
VDD_Clamp
VDD Zener Clamp
Voltage
I(VDD ) = 15 mA
T_Softstart
Soft Start Time
Feedback Input Section(FB Pin)
AVCS
PWM Input Gain
VFB_Open
FB Pin Open Voltage
ΔVFB /ΔVcs
VDD=18V
Min Typ Max Unit
5 20 uA
2.3 mA
8 9 10 V
14.2 15.2 16.2 V
26 28 30 V
100 uSec
6.5 V
45 uA
31 V
4 mSec
2.2 V/V
6V
IFB_max
FB Pin Maximum
Source Current
VDD=18V, Short FB pin
to GND.
1.1
VFB_TH
Zero Duty Cycle
Threshold Voltage
VDD=9.5V, Vsense=0V 0.9 1
VTH_BM
Burst Mode FB
Threshold Voltage
1.6
VTH_PL
Power Limiting FB
Threshold Voltage
4.4
TD_PL
Power Limiting
Debounce Time
250
ZFB_IN
Input Impedance
6
Current Sense Input(Sense Pin) Section
T_blanking
Sense Input Leading VDD=18V
Edge Blanking Time
300
VTH_OC
Internal Current
Limiting Comparator
Threshold
0.67 0.7
TD_OC
Propagation delay to CL=1nF at GATE
GATE
70
Oscillator Section
FOSC Normal Oscillation
Frequency
F(shuffle)/Fosc Frequency Shuffling
Range
60 65
-4
F_shuffle
f_Temp
Frequency Shuffling
Cycling Frequency
Frequency
Temperature Stability
-20oC to 100 oC
32
3
mA
1.1 V
V
V
mSec
Kohm
nSec
0.73 V
nSec
70 KHz
4%
Hz
%
©On-Bright Electronics
-5-
Confidential
OB_DOC_DS_8800
Free Datasheet http://www.datasheetlist.co

5 Page

OB2288 arduino
OB2288
Highly Integrated Current Mode PWM Controller
PACKAGE MECHANICAL DATA
8-Pin Plastic DIP
©On-Bright Electronics
- 11 -
Confidential
OB_DOC_DS_8800
Free Datasheet http://www.datasheetlist.com/

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