|
|
PDF OB3396 Data sheet ( Hoja de datos )
| Número de pieza | OB3396 | |
| Descripción | High Precision Off-line Primary-Side PWM Power Switch | |
| Fabricantes | On-Bright | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de OB3396 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
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  
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 | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet OB3396.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| OB3394 | High Precision PWM power switch | On-Bright |
| OB3396 | High Precision Off-line Primary-Side PWM Power Switch | On-Bright |
| OB3396AP | High Precision Off-line Primary-Side PWM Power Switch | On-Bright |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |