OB3622M Datasheet PDF - On-Bright
| Part Number | OB3622M | |
| Description | High Precision Non-isolated Power Switch | |
| Manufacturers | On-Bright | |
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OB3622M
High Precision Non-isolated Power Switch
GENERAL DESCRIPTION
OB3622M is a high current precision, non-isolated
power switch for LED lighting. It works under
transition mode.
It significantly simplifies the LED lighting system
design by eliminating the auxiliary winding
inductance and works under low current. A 650V
power switch is also integrated into the device.
The LED current can be adjusted externally by the
sense resistor Rs at CS pin and high precision
constant current regulation is realized.
OB3622M offers comprehensive protection
coverage with auto-recovery features including
LED string open protection, LED string short circuit
protection, cycle-by-cycle current limiting, built-in
leading edge blanking, VDD under voltage lockout
(UVLO), over temperature protection (OTP), etc.
OB3622M is offered in SOP8 package.
FEATURES
High precision Constant Current Regulation at
Universal AC input
Sense and supply without auxiliary winding
inductance
Low System Cost and High Efficiency
Low operation current
Programmable CC Regulation
Transition Mode operation
Built-in Primary winding inductance
compensation
LED string short circuit protection
LED string open protection
Cycle-by-Cycle Current Limiting
Built-in Leading Edge Blanking (LEB)
VDD Under Voltage Lockout with Hysteresis
Over temperature protection (OTP)
APPLICATIONS
LED lighting
TYPICAL APPLICATION
~+
AC
+
CS
NC
VDD
SW
GND
GND
Drain
Drain
OB3622M
Output Power Table
Product
Condition
90Vac~264Vac Input
220Vac±20% Input
OB3622M
IOUT≤0.2A
6.6W
11.3W
Note: Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sink, at 50℃ ambient
and 60℃ temperature rise. Higher output power is possible with extra added heat sink or air circulation to reduce thermal resistance.
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_3622M00
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OB3622M
High Precision Non-isolated Power Switch
ELECTRICAL CHARACTERISTICS
(TA = 25℃, VDD=7.5V, if not otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ
Supply Voltage (VDD) Section
I start-up
Start up current
VDD=UVLO(OFF)-1V
120
I oper
operation current
VDD=7.5V, no loading
280
UVLO(OFF) VDD under voltage lockout exit
9
UVLO(ON)
VDD under voltage lockout enter
6.5
VDD_CLAMP VDD CLAMP
VDD current 1mA
10.5
Current Sense Input Section
TLEB
LEB time
0.3
Vth_ocp
Over current threshold
485 500
Td_oc
OCP propagation delay
From OCP comparator
to gate drive
100
Toff_max
Maximum off time
600
Toff_min
Minimum off time
5
Ton_max
Maximum on time
305
Source Drive Section
Rdson_l
Source drive low side on resistor
1.3
OTP Section
OTP
Over temperature protection
150
Power MOSFET Section
BVdss
MOSFET
Drain-Source
Breakdown Voltage
650
Rds,on
On resistance
18
Max Unit
150 uA
320 uA
V
V
V
us
515 mV
ns
us
us
us
ohm
℃
V
ohm
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_3622M00
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for OB3622M electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ OB3622M.PDF Datasheet ] | |
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