TEA1738GT

GreenChip SMPS control IC


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The TEA1738 family of IC´s are low cost Switched Mode Power Supply (SMPS) controller IC´s intended for flyback topologies. They operate in peak current and frequency control mode. To reduce Electro Magnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation.

Features and benefits

  • SMPS controller IC enabling low-cost applications
  • Large input voltage range (12 V to 30 V)
  • Integrated Over Voltage Protection (OVP) on pin VCC
  • Very low supply current during start-up and restart (typically 10 μA)
  • Low start-up voltage (13.2 V typical)
  • Low supply current during normal operation (typically 0.55 mA without load)
  • Overpower or high/low line compensation
  • Adjustable overpower time-out
  • Adjustable overpower restart timer
  • Fixed switching frequency with frequency jitter to reduce EMI
  • Frequency reduction at medium power operation to maintain high efficiency
  • Frequency reduction with fixed minimum peak current
  • Frequency increase at peak power operation
  • Slope compensation for CCM operation
  • Low and adjustable OverCurrent Protection (OCP) trip level
  • Adjustable soft start operation
  • Two protection inputs (e.g. for input UVP and OTP)
  • IC overtemperature protection

Applications

  • All applications requiring efficient and cost-effective PSU solutions up to 75 W
All information on this product information page is subject to the subsequent disclaimers:
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Parametric search

Show functional diagram

Block Diagram: TEA1738FT
Block Diagram: TEA1738FT

Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
Vstartupstart-up voltage13.214.2V
foscoscillator frequencymedium power26.5kHz
foscoscillator frequencyhigh power63kHz
foscoscillator frequencypeak power118kHz
ICC(startup)start-up supply currentVCC < Vstartup51015µA
Tjjunction temperature-40150°C
VCCsupply voltagecontinuous-0.430V
VCCsupply voltaget < 100 ms35V
Vth(UVLO)undervoltage lockout threshold voltage11.212.213.2V

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
TEA1738GT/N1TEA1738GT/N1,1189352 953 58118Volume productionSOT96-1
(SO8) 		Tape reel smdStandard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1VCCsupply voltagePin configuration: TEA1738G (SOT96-1)SOT96-1
2GNDground
3DRIVERgate driver output
4ISENSEcurrent sense input
5VINSENSEinput voltage protection input
6PROTECTgeneral purpose protection input
7CTRLcontrol input
8OPTIMERoverpower and restart timer

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
TEA1738GT/N1TEA1738GT/N1,118TEA1738GT/N1Always Pb-free11
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Documentation for this product

TypeFormatTitleDate
Data sheetpdfGreenChip SMPS control IC (v.1.0)2011-09-02
Application notepdfGreenChip TEA1738 series fixed frequency flyback controller (v.1.1)2011-04-18
Application notepdfReducing standby power (v.1.0)2011-03-30
BrochurepdfNXP GreenChip flyback controllers TEA173x (v.1.0)2011-03-15
Line cardpdfApplication guide: Flat-panel TV sets (v.2.0)2012-03-13
LogogifGreenChip logo (v.1.0)2012-04-20
Other typepdfApplication guide: Set-top boxes (STBs) (v.1.0)2011-11-28
User manualpdfTEA1738; TEA1703 reference board (v.1.0)2011-02-28

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
TEA1738GT/N19352 953 58118TEA1738GT/N1,118NADIGI-KEY CORPORATION4,9885/24/2012Buy online 

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