MAX1610CSE Maxim Integrated Products, MAX1610CSE Datasheet
MAX1610CSE
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MAX1610CSE Summary of contents
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... SMBus Serial Interface (MAX1611) ® No Flicker at Low Brightness (internal 280Hz current chopping) ® High Power-to-Light Efficiency ® Selectable 290kHz/145kHz Switching Frequency ® Oscillator SYNC Input ® 16-Pin Narrow SO Package ______________Ordering Information PART MAX1610CSE MAX1611CSE 16 SDA BATT 15 LX SCL BST SMBSUS 14 GND SYNC 13 ...
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... BATT, LX Current .....................................................................1A SDA Current ........................................................................50mA VL Current ...........................................................................50mA Continuous Power Dissipation (T SO (derate 8.70mW/°C above +70°C) .........................696mW Operating Temperature Range MAX1610CSE/MAX1611CSE ..............................0°C to +70°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C CONDITIONS BATT = 25V 4.75V < BATT < 26V ...
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Digitally Controlled CCFL Backlight ELECTRICAL CHARACTERISTICS (continued 0°C to +70°C, BATT = 8.2V, MINDAC = 0V, unless otherwise noted. Typical values are PARAMETER DAC AND ERROR AMPLIFIER DAC Resolution MINDAC Input Voltage Range MINDAC Input ...
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Digitally Controlled CCFL Backlight Power Supplies TIMING CHARACTERISTICS—MAX1610 (Figure +25°C, unless otherwise noted.) A PARAMETER SYMBOL UP, DN Pulse Width High t 1 UP, DN Pulse Width Low t 2 UP, DN Pulse Separation t 3 Counter ...
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Digitally Controlled CCFL Backlight __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A REF OUTPUT VOLTAGE vs. REF OUTPUT CURRENT 2.2 SHDN = VL, BATT = 5V 2.1 2.0 1.9 1.8 1.7 1.6 1 100 1000 10000 ...
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Digitally Controlled CCFL Backlight Power Supplies ______________________________________________________________Pin Description PIN NAME MAX1610 MAX1611 1 — UP — 1 SDA 2 — DN — 2 SCL SHDN 3 — — 3 SMBSUS 4 4 SYNC ...
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Digitally Controlled CCFL Backlight Figure 1. MAX1610 UP and DN Signal Timing START CONDITION CLOCKED INTO SLAVE SCL t HD:STA SDA t SU:STA Figure 2. MAX1611 SMB Serial-Interface Timing—Address _______________________________________________________________________________________ MOST SIGNIFICANT ...
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Digitally Controlled CCFL Backlight Power Supplies • • • SCL • • • SDA Figure 3. MAX1611 SMB Serial-Interface Timing—Acknowledge _______________Detailed Description A cold-cathode fluorescent lamp (CCFL) has two termi- nals. For the CCFL to emit light, the two lamp ...
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Digitally Controlled CCFL Backlight BATT + C9 MAX1610 MAX1611 SYNC 9 REF MINDAC R6 * DIGITAL INTERFACE NOT SHOWN Figure 4. Typical Floating-Lamp Application Circuit Table 1. ...
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Digitally Controlled CCFL Backlight Power Supplies Table 2. Typical Application Circuit Component Values a) Resistors SYMBOL VALUE TOLERANCE R1 (Note) ±1% R2 510 ±10% 51k R3 ±5% 8.2k R4 ±5% 150k R5 ±5% 51k R6 ± ±10% c) ...
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Digitally Controlled CCFL Backlight FIGURE 4 CIRCUIT 15pF 462mA, R1 CCFL VL = 500V RMS BATT = 10V 0.20A, BATT MINDAC = 0.5V, D/A VALUE = 11111 5µs/div Figure 5. Royer Oscillator Typical Operating ...
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Digitally Controlled CCFL Backlight Power Supplies Open-Tube Protection (OTP) Any real transformer used in a Royer oscillator will have a maximum-allowed secondary voltage. If the maximum- allowed secondary voltage is exceeded, the winding insulation can break down, leading to permanent ...
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Digitally Controlled CCFL Backlight BATT BST DMOS POWER SWITCH LX CS CSAV CC REF MINDAC SYNC SS OTP SHDN (SMBSUS ARE FOR MAX1611 NOTE: CIRCUITRY TO DETECT MINDAC = VL NOT SHOWN. SEE CHOPPING THE LAMP CURRENT SECTION. ...
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Digitally Controlled CCFL Backlight Power Supplies MOST SIGNIFICANT ADDRESS BIT START CONDITION SCL SDA Figure 10. MAX1611 Serial-Interface Single-Byte Write Example (REGSEL = 0) MOST SIGNIFICANT ADDRESS BIT START CONDITION SCL SDA Figure 11. MAX1611 Serial-Interface Single-Byte Write Example (REGSEL ...
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Digitally Controlled CCFL Backlight SCL SDA IN LE 7-BIT LATCH-0 SMBSUS 5-BIT DAC Figure 12. MAX1611 Serial-Interface Circuitry Block Diagram ______________________________________________________________________________________ OTPOK CONTROL LOGIC 8 8-BIT SHIFT REGISTER DATA 7-BIT LATCH ...
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Digitally Controlled CCFL Backlight Power Supplies Table 4. MAX1611 Configuration Byte with REGSEL = 0 POR BIT NAME STATE* 7 REGSEL — 6 SHDNB STDBY D1-0 0 ...
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Digitally Controlled CCFL Backlight MOST SIGNIFICANT ADDRESS BIT START CONDITION SCL SDA Figure 13. MAX1611 Serial-Interface Read Example Table 6. MAX1611 Status Bits POR BIT NAME STATE* 7 OTPOK 1 6 — — 5 — — 4 DA4 3 DA3 ...
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Digitally Controlled CCFL Backlight Power Supplies minimum 9% duty cycle. DAC code 00000 shuts off the lamp entirely (0% duty cycle). Figure 14 shows the chopped waveforms with the DAC set to mid-scale. __________ Applications Information Directly Regulating the Lamp ...
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Digitally Controlled CCFL Backlight Table 7. Capacitor C1 Supplier Information PART SUPPLIER SMD7.3104 WIMA PACCOM CHEV0025J104 Electronics 4040N104M250 NOVACAP Table 8. Capacitor C2 Supplier Information PART 1808HA330KATMA AVX/Kyocera GHM1040SL330J3K Murata 302C1812A330K Metuchen Capacitors, Inc. 302R29N330K Johanson Dielectrics ___________________Chip Information TRANSISTOR ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 20 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 20 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...