EL7586AILZ-T7 Intersil, EL7586AILZ-T7 Datasheet
![IC POWER SUPPLY TFT-LCD 20-QFN](/photos/28/16/281691/20-vqfn_r_sml.jpg)
EL7586AILZ-T7
Specifications of EL7586AILZ-T7
Related parts for EL7586AILZ-T7
EL7586AILZ-T7 Summary of contents
Page 1
... EL7586ILZ-T13 7586ILZ 13” 4x4 QFN (Note) (Pb-free) EL7586AILZ 7586AIL 4x4 QFN (Note) (Pb-free) EL7586AILZ-T7 7586AIL Z 7” 4x4 QFN (Note) (Pb-free) EL7586AILZ-T13 7586AIL Z 13” 4x4 QFN (Note) (Pb-free) NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...
Page 2
Absolute Maximum Ratings ( ...
Page 3
Electrical Specifications -40°C to 85°C, unless otherwise specified. (Continued) PARAMETER DESCRIPTION V LDO ON V FBP Regulation Voltage FBP V FBP Fault Trip Point F_FBP I FBP Input Bias Current FBP GMP FBP Effective Transconductance ...
Page 4
Electrical Specifications -40°C to 85°C, unless otherwise specified. (Continued) PARAMETER DESCRIPTION FAULT DETECTION t Fault Time Out FAULT OT Over-temperature Threshold I PG Pull-down Current PG LOGIC ENABLE V Logic High Threshold HI V Logic ...
Page 5
Typical Performance Curves 100 80 A =15V VDD 100 200 I (mA) OUT FIGURE 1. V EFFICIENCY AT V BOOST 100 80 A =15V VDD 100 200 300 I (mA) ...
Page 6
Typical Performance Curves 0 -0.5 -1.0 -1.5 -2.0 A -2.5 A =15V VDD -3.0 -3.5 A VDD -4.0 0 100 200 300 I (mA) OUT FIGURE 7. V LOAD REGULATION AT V BOOST 0.05 0.04 0.03 0.02 0.01 0 -0.01 ...
Page 7
Typical Performance Curves 0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 0 100 200 300 400 I (mA) OUT FIGURE 13. V LOAD REGULATION LOGIC V CDLY V REF V BOOST V LOGIC TIME (10ms/DIV) FIGURE 15. EL7586 START-UP SEQUENCE V ...
Page 8
Typical Performance Curves V BOOST V LOGIC V OFF C =220nF V DLY ON TIME (10ms/DIV) FIGURE 19. EL7586A START-UP SEQUENCE V = =13V OUT I =30mA OUT TIME (400ns/DIV) FIGURE 21. LX WAVEFORM - DISCONTINUOUS MODE JEDEC ...
Page 9
Applications Information The EL7586 and EL7586A provide a high integrated multiple output power solution for TFT-LCD applications. The system consists of one high efficiency boost converter and three linear-regulator controllers ( OFF multiple protection functions. A block ...
Page 10
REFERENCE V REF GENERATOR SGND SLOPE COMPENSATION VOLTAGE FBB AMPLIFIER GM AMPLIFIER C INT UVLO EN COMPARATOR V DD SHUTDOWN PG & START-UP CONTROL THERMAL SHUTDOWN CDLY SS + DRVN 0.2V - BUFFER FBN 0.4V UVLO COMPARATOR FIGURE 25. BLOCK ...
Page 11
EL7586, EL7586A SLOPE COMPENSATION Ifb CURRENT AMPLIFIER Iref FBB GM AMPLIFIER REFERENCE GENERATOR CINT FIGURE 26. BLOCK DIAGRAM OF THE BOOST REGULATOR 11 SHUTDOWN & STARTUP CONTROL CLOCK PWM LOGIC BUFFER Ifb Iref VOLTAGE AMPLIFIER PGND LX FN9210.2 January 17, ...
Page 12
The following table gives typical values (margins are considered 10%, 3%, 20%, 10%, and 15 and I : OMAX TABLE (V) V (V) L (µH) (MHz 3.3 9 6.8 1 3.3 12 ...
Page 13
Operation of the DELB Output Function An open drain DELB output is provided to allow the boost output voltage, developed at C (see application diagram delayed via an external switch (Q4 time after the V ...
Page 14
For the EL7586 and EL7586A, the minimum drive current is: I_DRVL_min = 8mA The minimum base-emitter resistor, R calculated as: R _min = V _max/(I_DRVL_min - Ic/Hfe_min 1.25V/(8mA - 500mA/100) = 417Ω This is the minimum value ...
Page 15
Typical V voltage supported by EL7586 LOGIC and EL7586A ranges from +1. comparator is also included for monitoring the output voltage. The undervoltage threshold is set ...
Page 16
The following equation gives the boundary between discontinuous and continuous boost operation. For continuous operation (LX switching every clock cycle) we require that: I(A _load) > D*(1-D)*V /(2*L*F VDD IN OSC where the duty cycle ...
Page 17
EL7586, EL7586A V CDLY EN V REF V BOOST LOGIC V OFF t DEL1 DELAYED V BOOST V ON START-UP SEQUENCE TIMED BY C FIGURE 33. EL7586 START-UP SEQUENCE DEL2 DLY FN9210.2 January ...
Page 18
EL7586, EL7586A V CDLY REF V BOOST LOGIC V OFF t DEL1 DELAYED V BOOST V ON START-UP SEQUENCE TIMED BY C FIGURE 34. EL7586A START-UP SEQUENCE DEL2 t ...
Page 19
Over-Temperature Protection An internal temperature sensor continuously monitors the die temperature. In the event that the die temperature exceeds the thermal trip point of 140°C, the device will shut down. Layout Recommendation The device's performance including efficiency, output noise, transient ...
Page 20
Typical Application Diagram Q NODE 1nF 10µ 0.22µF 4.7µF R 10Ω 4.7µ 10kΩ 0.1µF REF 41 NODE ...
Page 21
... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...