ISL97635AIRZ-TK Intersil, ISL97635AIRZ-TK Datasheet
ISL97635AIRZ-TK
Specifications of ISL97635AIRZ-TK
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ISL97635AIRZ-TK Summary of contents
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... Ordering Information PART NUMBER PART (Note) MARKING ISL97635AIRZ* 976 35AIRZ *Add “-T” or “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach ...
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Typical Application Circuit VBL 24V 2 ISL97635A V = 34.5V, 30mA PER STRING OUT ISL97635A FAULT OVP 16 VIN 24 PGND VDC 17 PGND 18 22 IIN0 15 COMP SMBCLK 1 ...
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Block Diagram VBL 24V VIN VIN VDC REG OSC AND RAMP COMP f PWM LED PWM CONTROL COMP GM AMP + + - - RSET GND SMBUS SMBCLK INTERFACE INTERFACE SMBDAT PWMI PWMO 3 ISL97635A FAULT ISL97635A ...
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... ISL97635A Thermal Information Thermal Resistance (Typical, Notes 1, 2) θ QFN . . . . . . . . . . . . . . . . . . . . . . Thermal Characterization (Typical, Note QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = and θ thermal resistance ratings -40°C to +85°C; V ...
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Electrical Specifications All specifications below are tested at T otherwise noted. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER DESCRIPTION Eff_peak Peak ...
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Electrical Specifications All specifications below are tested at T otherwise noted. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER DESCRIPTION t Data ...
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Electrical Specifications All specifications below are tested at T otherwise noted. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER DESCRIPTION FAULT PIN ...
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Typical Performance Curves 0.020 6P9S = 54 LEDs 0.015 12V/1mA 0.010 0.005 0 -0.005 6V/20mA -0.010 6V/1mA -0.015 -0.020 CHANNELS FIGURE 6. CHANNEL-TO-CHANNEL CURRENT MATCHING 180 6 CHANNELS 9 LEDs PER CHANNEL ...
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Typical Performance Curves FIGURE 12 50% PWM DIMMING LED FIGURE 14. LX ZOOM IN AT 50% DIMMING 9 ISL97635A (Continued) FIGURE 16. RIPPLE VOLTAGE ZOOM IN FIGURE 13 50% PWM DIMMING FIGURE 15. RIPPLE VOLTAGE December ...
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Pinout Pin Descriptions (I = Input Output Supply) PIN NAME TYPE 1 SMBCLK I 2 SMBDAT I/O 3 FPWM I 4 PWMO I/O 5 GND S 6 PWMI/ IIN5 I ...
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Theory of Operation PWM Boost Converter The current mode PWM boost converter produces the minimal voltage needed to enable the LED stack with the highest forward voltage drop to run at the programmed current. The ISL97635A employes current mode control ...
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BRTDC can be programmed from 0 to 255 in decimal and defaults to 255 (0xFF). If left at the default value, LED current will be fixed BRTDC can be adjusted LEDmax dynamically on the fly during operation. ...
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PWM signal as shown in Equation 11: × ⁄ × BRT 255 1 V PWMO = – LED ave LED Where BRT is the value held in ...
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Fault Protection and Monitoring The ISL97635A features extensive protection functions to cover all the perceivable failure conditions. The failure mode of a LED can be either open circuit short. The behavior of an open circuited LED can ...
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OVP level, the input protection FET will also be switched off. Over-Temperature Protection (OTP) The ISL97635A includes two over-temperature thresholds. The lower threshold is set to +130°C. When this threshold is reached, any ...
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DETECTION CASE FAILURE MODE MODE 1 CH0 Short Circuit Upper Over-Temperature Protection limit (OTP) not triggered and VIIN0 < VSC 2 CH0 Short Circuit Upper OTP triggered but VIN0 < VSC 3 CH0 Short Circuit Upper OTP not triggered but ...
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SMBCLK t LOW HD:STA SMBDAT BUF P S NOTES: SMBus Description S = start condition P = stop condition A = acknowledge A = not acknowledge R/W = read ...
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Write Byte The Write Byte protocol is only three bytes long. The first byte starts with the slave address followed by the “command code,” which translates to the “register index” being written. The third byte contains the data byte that ...
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... OV_CURR = Input overcurrent (1 = Overcurrent condition Current OK) THRM_SHDN = Thermal Shutdown (1 = Thermal fault Thermal OK) FAULT = Fault occurred (Logic “OR” of all of the fault conditions) MFG[3..0] = Manufacturer ID (16 vendors available. Intersil is vendor ID 9) REV[2..0] = Silicon rev (Rev 0 through Rev 7 allowed for silicon spins) BRTDC[7..0] = 256 steps of DC brightness control VSC[1 ...
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Device Control Register (0x01) This register has two bits that control the operating mode of the backlight controller and a single bit that controls the BL ON/OFF state. The remaining bits are reserved. The bit assignment is shown in Figure ...
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... ID made it to the factory. Except Bit 7 which has all of the bits in this register are read-only. • Vendor ID 9 represents Intersil Corp. • Default value for register 0x03 is 0xC8. The initial value of REV shall be 0. Subsequent values of REV will increment by 1 ...
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... Bit 5 (R) BIT ASSIGNMENT = Manufacturer ID. See “Identification Register MFG[3..0] (0x03)” on page 21. data decimal correspond to other vendors data 9 in decimal represents Intersil ID data decimal are reserved data 15 in decimal Manufacturer ID is not implemented REV[2..0] = Silicon rev (Rev 0 through Rev 7 allowed for ...
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REGISTER 0x07 DC BRIGHTNESS CONTROL REGISTER BRTDC7 BRTDC6 BRTDC5 Bit 7 (R/W) Bit 6 (R/W) Bit 5 (R/W) BIT ASSIGNMENT = 256 steps of DC brightness levels BRTDC[7..0] FIGURE 27. DESCRIPTIONS OF DC BRIGHTNESS CONTROL REGISTER DC Brightness Control Register ...
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REGISTER 0x09 OUTPUT CHANNEL REGISTER RESERVED RESERVED CH5 Bit 7 (R/W) Bit 6 (R/W) Bit 5 (R/W) BIT ASSIGNMENT CH[5..0] CH5 = Channel 5, CH4 = Channel 4 and so on Components Selections According to the inductor Voltage-Second Balance principle, ...
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ESR of the output capacitor. The ripple voltage can be shown as Equation 21: Δ ⁄ × ⁄ × ESR = ...
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... 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 ...
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Q1 VIN 10µ/25V 0.1µ/25V FDMA530PZ C20 JP26 C10 33n VLOGIC R7 C12 R5 R6 500 0.1µ/10V 10k 10k C11 1µ/10V 1 SMBCLK PGND SMBCLK 2 SMBDAT SMBDAT PGND C13 27n/6.3V 3 FPWM ISL97635A C14 4 220n/6.3V ...
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Package Outline Drawing L24.4x4D 24 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 10/06 4.00 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 28 ISL97635A ...