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OB3396AP PDF Datasheet - High Precision Off-line Primary-Side PWM Power Switch - On-Bright

Part Number OB3396AP
Description High Precision Off-line Primary-Side PWM Power Switch
Manufacturers On-Bright 
Logo On-Bright Logo 
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OB3396AP datasheet, circuit
OB3396
High Precision Off-line Primary-Side PWM Power Switch
GENERAL DESCRIPTION
OB3396 is a primary side regulation off-line LED
lighting controller which can achieve accurate LED
current. It significantly simplifies LED lighting
system design by eliminating the secondary side
feedback circuitry. Proprietary Constant Voltage
(CV) and Constant Current (CC) control is
integrated as shown in the figure below.
The LED current (CC control) can be adjusted
externally by the resistor Rs at SOURCE pin.
Device operates in PFM in CC mode as well at
large load condition and it operates in PWM with
frequency reduction at light/medium load.
OB3396 offers comprehensive protection
coverage with auto-recovery features including
Cycle-by-Cycle current limiting, VDD OVP, VDD
clamp and UVLO. Excellent EMI performance is
achieved with On-Bright proprietary frequency
shuffling technique.
OB3396 is offered in DIP8 package.
FEATURES
„ High Precise Constant Current Regulation at
Universal AC input
„ Primary-side Sensing and Regulation Without
TL431 and Opto-coupler
„ Programmable CC Regulation
„ Adjustable Constant Current and Output
Power Setting
„ Built-in Secondary Constant Current Control
with Primary Side Feedback
„ Built-in Adaptive Current Peak Regulation
„ Built-in Primary winding inductance
compensation
„ Power on Soft-start
„ Built-in Leading Edge Blanking (LEB)
„ Cycle-by-Cycle Current Limiting
„ VDD Under Voltage Lockout with Hysteresis
(UVLO)
„ VDD OVP
„ VDD Clamp
APPLICATIONS
Low Power AC/DC offline SMPS for
„ LED applications
Fig.1. Typical CC/CV Curve
TYPICAL APPLICATION
.
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_339600

1 page

OB3396AP pdf, schematic
OB3396
High Precision Off-line Primary-Side PWM Power Switch
GENERAL INFORMATION
Pin Configuration
The pin map is shown as below for DIP8.
VDD 1
8 DRAIN
COMP
2
7 DRAIN
GND
3
6 SOURCE
INV 4
5 CS
Ordering Information
Part Number
Description
OB3396AP
DIP8, Pb-free, Tube
Package Dissipation Rating
Package
RθJA (/W)
DIP8
75
Absolute Maximum Ratings
Parameter
Value
Drain Voltage(off state)
-0.3 to BVdss
VDD Voltage
VDD Zener Clamp
Continuous Current
-0.3 to VDD_clamp
10 mA
COMP Voltage
-0.3 to 7V
CS Input Voltage
-0.3 to 7V
INV Input Voltage
-0.3 to 7V
Min/Max Operating
Junction Temperature TJ
Min/Max Storage
Temperature Tstg
Lead Temperature
(Soldering, 10secs)
-40 to 150
-55 to 150
260
Note: Stresses beyond those listed under “absolute maximum
ratings” may cause permanent damage to the device. These
are stress ratings only, functional operation of the device at
these or any other conditions beyond those indicated under
“recommended operating conditions” is not implied. Exposure
to absolute maximum-rated conditions for extended periods
may affect device reliability.
©On-Bright Electronics
Confidential
-2-
Preliminary Datasheet
OB_DOC_DS_339600

2 Page

OB3396AP equivalent
OB3396
High Precision Off-line Primary-Side PWM Power Switch
ELECTRICAL CHARACTERISTICS
(TA = 25, VDD=VDDG=16V, if not otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max Unit
Supply Voltage (VDD) Section
I DD ST
I DD op
Startup Current
Operation Current
VDD=13V
Operation supply current
INV=2V, CS=0V,
VDD=VDDG=20V
-
5
2
20 uA
3 mA
UVLO(ON)
VDD Under Voltage Lockout
Enter
VDD falling
8.6 9.4 10.6 V
UVLO(OFF) VDD Under Voltage Lockout Exit VDD rising
13.9 15.2 16.4 V
VDD_clamp
OVP
Maximum VDD operation voltage IDD=10mA
Over voltage protection
Threshold
Ramp VDD until gate
shut down
27 28.5 30
26 27.5 29
V
V
Current Sense Input Section
TLEB
LEB time
625 ns
Vth_oc
Over current threshold
785 800 815 mV
Td_oc
OCP Propagation delay
110 ns
ZSENSE_IN
T_ss
Input Impedance
Soft start time
50
17
Kohm
ms
Frequency Section
Freq_MaxNote 1 IC Maximum frequency
60 65 70 KHz
Freq_Nom
System Nominal switch frequency
50 KHz
Freq_startup
INV=0V, Comp=5V
14 KHz
f/Freq
Frequency shuffling range
+/-6 %
Error Amplifier section
Vref_EA
Reference voltage for EA
1.96 2 2.04 V
Gain
DC gain of EA
60 dB
Power MOSFET Section
BVdss
MOSFET Drain-Source
Breakdown Voltage
600 V
Rdson
On Resistance
Static, Id=1.0A
4.4 5.5 Ώ
Note:
1. Freq_Max indicates IC internal maximum clock frequency. In system application, the maximum operation frequency of 65KHz
nominal occurs at maximum output power or the transition point from CV to CC.
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_339600

5 Page

OB3396AP diode, scr
OB3396
High Precision Off-line Primary-Side PWM Power Switch
PACKAGE MECHANICAL DATA
Symbol
A
A1
A2
B
B1
C
D
E
E1
e
L
E2
Dimensions In Millimeters
Min Max
3.710
5.334
0.381
2.921
4.953
0.350
0.650
1.524 (BSC)
0.200
0.360
9.000
10.160
6.096
7.112
7.320
8.255
2.540 (BSC)
2.921
3.810
7.620
10.920
Dimensions In Inches
Min Max
0.146
0.210
0.015
0.115
0.195
0.014
0.026
0.06 (BSC)
0.008
0.014
0.354
0.400
0.240
0.280
0.288
0.325
0.1 (BSC)
0.115
0.150
0.300
0.430
©On-Bright Electronics
Confidential
-9-
Preliminary Datasheet
OB_DOC_DS_339600

9 Page





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