tea1738t NXP Semiconductors, tea1738t Datasheet
tea1738t
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tea1738t Summary of contents
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... TEA1738T; TEA1738LT GreenChip SMPS control IC Rev. 2 — 14 January 2011 1. General description The TEA1738( low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. The TEA1738(L) operates in peak current and frequency control mode. Frequency jitter has been implemented to reduce ElectroMagnetic Interference (EMI) ...
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... Description plastic small outline package; 8 leads; body width 3.9 mm plastic small outline package; 8 leads; body width 3.9 mm All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control IC Version SOT96-1 SOT96-1 © NXP B.V. 2011. All rights reserved. ...
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... LEB soft start μA 4 ISENSE V ctrl(Ipeak) OCP OVERPOWER CORRECTION (1) In the TEA1738LT the overload signal switches the IC to the latched-off state. In the TEA1738T the overload signal triggers the restart timer. Fig 1. Block diagram TEA1738T_TEA1738LT Product data sheet VCCstart V ctrl(Ipeak 400 mV ...
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... All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control IC 8 OPTIMER 7 CTRL TEA1738T TEA1738LT 6 PROTECT 5 VINSENSE 001aan168 © ...
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... IC current consumption is low (10 μA typical). When V startup the IC first waits for pin VINSENSE to reach the V startup det(L)(PROTECT) Figure + 1 V). All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control R10 ...
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... Fig 4. When the voltage on pin VCC drops below the V controller stops switching and the TEA1738T enters Restart mode. In Restart mode the driver output is disabled and the VCC pin voltage is recharged via resistor R3 to the rectified mains voltage. For the TEA1738LT a VCC undervoltage, which does not occur during a start-up event, latches the off-state ...
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... Figure ctrl(Ipeak) current (11 μA typical) is sourced from the OPTIMER pin. If the IO(OPTIMER) All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control IC (0.5 V typical). A det(L)(PROTECT) Figure 3), a temporary overload 1) is set by pin CTRL. When V voltage (2 ...
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... NXP Semiconductors Fig 5. In the TEA1738T when the V TEA1738LT is latched in an off state when the V Fig 6. 7.10 Current mode control (ISENSE pin) Current mode control is used for its good line regulation. The primary current is sensed by the ISENSE pin across external resistor R9 (see ...
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... Peak current control t leb V sense(max) V ISENSE Leading edge blanking 9). All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control IC 014aab293 frequency increase frequency reduction (V) CTRL Figure 8). t 014aaa932 © NXP B.V. 2011. All rights reserved. ...
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... Overpower compensation Section 7.11). f osc 80 kHz 66 kHz low power 28 kHz 1 All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control (V) VINSENSE 014aaa933 Figure 3) on the ISENSE pin is Figure 7 and Figure 10). ...
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... PROTECT current on pin CTRL current on pin ISENSE current on pin DRIVER total power dissipation storage temperature junction temperature All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control IC Conditions Min −0.4 continuous t < 100 ms - −0.4 current limited − ...
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... − startup th(UVLO) V < startup All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control IC Conditions Min class 1 [1] human body - model [2] machine model - charged device - model ...
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... Pulse width modulator f oscillator frequency osc f modulation frequency mod Δf modulation frequency mod variation δ maximum duty cycle max TEA1738T_TEA1738LT Product data sheet TEA1738T; TEA1738LT Conditions no load on pin DRIVER; δ load on pin DRIVER; δ detection level = 50 μA I I(VINSENSE PROTECT low(PROTECT ...
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... V soft start voltage start(soft) R soft start resistance start(soft) Driver (pin DRIVER) TEA1738T_TEA1738LT Product data sheet TEA1738T; TEA1738LT Conditions pin CTRL transfer between high and medium power pin CTRL going to low power no overpower situation overpower situation low level high level ...
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... R9. Capacitor C3 reduces the noise on the CTRL pin. Resistor R7 reduces the peak current to capacitor C5. Resistor R10 is required to limit the current spikes to the DRIVER pin due to parasitic inductance of the current sense resistor R9. TEA1738T_TEA1738LT Product data sheet TEA1738T; TEA1738LT Conditions DRIVER ...
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... CTRL TEA1738LT 7 2 OPTIMER 4.7 μF 220 nF 2.2 MΩ All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control ISENSE S1 470 Ω R10 DRIVER 10 Ω GND R6 22 kΩ VCC C6 C5 220 nF R9 0.25 Ω ...
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... REFERENCES JEDEC JEITA MS-012 All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 TEA1738T; TEA1738LT GreenChip SMPS control θ detail ...
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... NXP Semiconductors 13. Revision history Table 6. Revision history Document ID Release date Data sheet status TEA1738T_TEA1738LT v.2 20110114 TEA1738T_TEA1738LT v.1 20101231 TEA1738T_TEA1738LT Product data sheet TEA1738T; TEA1738LT Product data sheet Preliminary data sheet All information provided in this document is subject to legal disclaimers. Rev. 2 — 14 January 2011 ...
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... TEA1738T_TEA1738LT Product data sheet TEA1738T; TEA1738LT [3] Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. ...
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... For sales office addresses, please send an email to: TEA1738T_TEA1738LT Product data sheet TEA1738T; TEA1738LT own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors’ ...
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... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2011. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Document identifier: TEA1738T_TEA1738LT All rights reserved. Date of release: 14 January 2011 ...