OB2273AMP

60kHz~70kHz 12V~25V Flyback SOT-23-6 AC DC Converters, Offline Switchers RoHS

SOT-23-6ROHS CompliantActive

High Performance Current Mode PWM Controller

Manufacturer: OB
Manufacturer part #: OB2273AMP
Store part #: C78847
Package / case: SOT-23-6
Category: AC DC Converters, Offline Switchers
Packaging: Tape & Reel (TR)

Datasheet (PDF)

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2,845 in stock

#C78847

Stock & price checked 6 days ago

Quantity	Unit price	Pack price
5+	₹29.58	₹147.90
50+	₹23.02	₹1,151.00
150+	₹20.22	₹3,033.00
500+	₹16.70	₹8,350.00
3,000+	₹15.14	₹45,420.00
6,000+	₹14.20	₹85,200.00

Quantity (min 5, multiples of 5)

5 × ₹29.58

₹147.90

excl. GST

₹174.52 incl. 18% GST

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GST invoice with every order
Standard pack: 3,000 per reel

OB2273AMP

₹147.90 for 5 + GST

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Specifications

Operating Temperature: -20℃~+85℃
Frequency - Switching: 60kHz~70kHz
Voltage - Supply: 12V~25V
Topology: Flyback
Features: Light load efficient mode;EMI optimization (spread spectrum);Audio noise elimination;Leading edge blanking;Slope compensation;Under-voltage lockout;Soft-start;Over Voltage Protection;Overtemperature protection (OTP);Under Voltage Protection
Duty Cycle(Max): 80%
Working Mode: PWM Modulation
Feedback System: Secondary-Side Feedback

Packaging & compliance

RoHS: ROHS Compliant
Lifecycle: Active
Packaging: Tape & Reel (TR)
Standard pack: 3,000 / Reel
Sold per: Piece
Minimum order: 5 (multiples of 5)
Unit weight: 0.038 g

Overview

OB2273A is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications. PWM switching frequency at normal operation is internally fixed and is trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversion efficiency is thus achieved. OB2273A is offered in SOT23-6 package. VDD low startup current and low operating current contribute to a reliable power on startup and low standby design with OB2273A. OB2273A offers complete protection coverage with auto-recovery including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD under voltage lockout (UVLO), over temperature protection (OTP), and over voltage (fixed or adjustable) protection (OVP). Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique. The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation.

Applications

Offline AC/DC flyback converter for
Battery Charger
Power Adaptor
Set-Top Box Power Supplies
Open-frame SMPS

Key features

Level 5 compliance with <100mW standby power at universal AC input
Power on Soft Start Reducing MOSFET Vds Stress
Frequency shuffling for EMI
Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
Audio Noise Free Operation
Fixed 65KHZ Switching Frequency
Comprehensive Protection Coverage
VDD Under Voltage Lockout with Hysteresis (UVLO)
Cycle-by-cycle over current threshold setting for constant output power limiting over universal input voltage range
Overload Protection (OLP) with autorecovery
Over Temperature Protection (OTP) with auto-recovery
VDD Over voltage Protection(OVP) with auto-recovery
Adjustable OVP through external Zener