OB2530N Datasheet PDF - On-Bright Electronics
| Part Number | OB2530N | |
| Description | High Precision CC/CV Primary-Side Power Switch | |
| Manufacturers | On-Bright Electronics | |
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OB2530N
High Precision CC/CV Primary-Side Power Switch
GENERAL DESCRIPTION
OB2530N is a high performance offline PSR
power switch for low power AC/DC charger and
adapter applications. It operates in primary-side
sensing and regulation. Consequently,
opto-coupler and TL431 could be eliminated.
Proprietary Constant Voltage (CV) and Constant
Current (CC) control is integrated as shown in the
figure below.
In CC control, the current and output power setting
can be adjusted externally by the sense resistor
Rs at CS pin. In CV control, multi-mode operations
are utilized to achieve high performance and high
efficiency. In addition, good load regulation is
achieved by the built-in cable drop compensation.
Device operates in PFM in CC mode at large load
condition and it operates in PWM with frequency
reduction at light/medium load. The chip
consumes very low operation current. It achieves
less than 75mW standby power to meet strict
standby power standard.
OB2530N offers comprehensive protection
coverage with auto-recovery feature including
Cycle-by-Cycle current limiting, VDD over voltage
protection, feedback loop open protection, short
circuit protection, built-in leading edge blanking,
VDD under voltage lockout (UVLO), OTP etc.
OB2530N is offered in SOP7 packages.
FEATURES
Primary-side sensing and regulation without
TL431 and opto-coupler
High precision constant voltage and current
regulation at universal AC input
Multi-mode PWM/PFM operation for efficiency
improving
Integrated 1A 620V MOSFET
Good dynamic response
Programmable CV and CC regulation
Built-in primary winding inductance
compensation
Programmable cable drop compensation
No need for control loop compensation
Audio noise free operation
Built-in leading edge blanking (LEB)
Ultra low start-up current and low operating
current
Comprehensive protection coverage with
auto-recovery
On-chip OTP
VDD over voltage protection
VDD under voltage lockout with
hysteresis (UVLO)
Cycle-by-Cycle current limiting
Feedback loop open protection
Output short circuit protection
APPLICATIONS
Low Power AC/DC offline SMPS for
Cell Phone Charger
Digital Cameras Charger
Small Power Adapter
Auxiliary Power for PC, TV etc.
Linear Regulator/RCC Replacement
Figure.1. Typical CC/CV Curve
TYPICAL APPLICATION
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_2530N02
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OB2530N
High Precision CC/CV Primary-Side Power Switch
ELECTRICAL CHARACTERISTICS
(TA = 25℃, VDD=15V, if not otherwise noted)
Symbol
Parameter
Test Conditions
Supply Voltage (VDD) Section
I start-up
Start up current
VDD=UVLO_OFF-1V
I static
Static current
UVLO(OFF) VDD under voltage lockout exit
UVLO(ON)
VDD under voltage lockout enter
VDD_OVP
VDD over voltage protection
Max. Operating
Voltage
Current Sense Input Section
TLEB
LEB time
Vth_ocp_min Minimum over current threshold
Vth_ocp_max Maximum over current threshold
FB Input Section
Vref_FB
Reference voltage for feedback
threshold
Tpause_min Minimum Toff
F_min
Minimum frequency
F_max
Maximum frequency
Icomp_cable
Maximum cable compensation
current
Output Over Voltage Protection
V_OVP
Output Over voltage threshold
MOSFET Section
BVdss
Mosfet Drain-Source Breakdown
Voltage
Rdson
Static drain to source on
resistance
Min Typ. Max Unit
15.5
7.3
26.0
5
0.85
16.5
8.3
27.0
1.0
17.5
9.3
28.0
uA
mA
V
V
V
25 V
300
485 500 515
590
ns
mV
mV
2.475 2.500 2.525 V
2.0
400 445 490
72
us
Hz
KHz
40 45 50 uA
2.85 3.0 3.15 V
620
9
V
Ώ
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_2530N02
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for OB2530N electronic component. |
| Information | Total 10 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ OB2530N.PDF Datasheet ] | |
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| Part Number | Description | MFRS |
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