MAX8930EWJ+T Maxim Integrated Products, MAX8930EWJ+T Datasheet
MAX8930EWJ+T
Specifications of MAX8930EWJ+T
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MAX8930EWJ+T Summary of contents
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... OUT PLAYR PLAYG PLAYB REFBP V FILT DD _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. LDOs with ALC and CAI White LED Charge Pump S Adaptive 1x or -0.5x Negative Modes S 11 Low-Dropout LED Current Sinks with 25.6mA ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI ABSOLUTE MAxIMUM RATINGS PV_, V EN, CAI, PLAY_, BIAS, DD, SENSE, REFBP, ECAGND to AGND .................-0.3V to +6.0V PV_ PGND_, AGND to NEG .......................-0.3V to +6.0V DD ...
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WLED Charge Pump, RGB, OLED Boost INTERfACE ChARACTERISTICS PARAMETER SDA, SCL Input High Voltage V DD SDA, SCL Input Low Voltage SDA, SCL Input Current V DD SDA Output Low Voltage I SDA ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI CURRENT SINK DRIVER ChARACTERISTICS PARAMETER Current Setting Range WLED1–WLED8, RGB programmable by I Main WLED_ and RGB ramp-up/ramp-down in 0.1mA WLED_, RGB Ramp-Up/Ramp- increments; 8 steps are programmable through ...
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WLED Charge Pump, RGB, OLED Boost, LDO1 ChARACTERISTICS (continued) PARAMETER Power-Supply Rejection f = 10Hz to 10kHz, I /DV LDO1 PV3 DV Output Noise Voltage (RMS 100Hz to 100kHz, I Minimum Output Capacitor I LDO1 Startup Time from ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI LDO3 ChARACTERISTICS PARAMETER Input Operating Range V PV4 Output Voltage V 200mA at V LDO3 V PV4 Programmable Output Voltage V PV4 Output Current Current Limit V LDO3 Dropout ...
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WLED Charge Pump, RGB, OLED Boost, STEP-UP CONVERTER ChARACTERISTICS (continued) PARAMETER Current Limit Propagation Delay (LX) Output Voltage Accuracy V PV5 Programmable Output Voltage V PV5 AMBIENT LIGhT SENSOR INTERfACE PARAMETER BIAS Output Voltage I BAIS BIAS Output Current V ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI CAI ChARACTERISTICS PARAMETER PWM Low-Level Input Voltage PWM High-Level Input Voltage PWM Dimming Frequency C FILT Current Dimming Range Duty cycle = 0% to 100% (Note 3) PWM Dimming ...
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WLED Charge Pump, RGB, OLED Boost, CHG PIN ChARACTERISTICS PARAMETER Low-Level Voltage I CHG Leakage Current V CHG Note 1: Limits are 100% production tested at T Note 2: 0.1mA LED load current is not included. Note 3: Guaranteed by ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI ( 3.7V, circuit of Figure 1, T PV_ EN WLED—CHARGE PUMP ACTIVE V C1P V C1N V C2P V = 3.8V, I LED = 25.6mA PV_ ...
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WLED Charge Pump, RGB, OLED Boost 3.7V, circuit of Figure 1, T PV_ EN WLED—DIMMING CURRENT TRANSIENT BY ALC WITH SLOPE CONTROL V SENSE I LED1 I LED2 0.256ms/0.1mA SLOPE 100ms/div WLED—LED1 OPEN CIRCUIT ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI ( 3.7V, circuit of Figure 1, T PV_ EN RGB—PLAY_ ON/OFF TRANSITION, LOGIC-LOW V PLAY_ I RLED SETTING = 10mA I GLED I ...
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WLED Charge Pump, RGB, OLED Boost 3.7V, circuit of Figure 1, T PV_ EN LDO2 LOAD TRANSIENT I 150mA LDO2 0mA V LDO1 V LDO2 V LDO3 10ms/div LDO1 AND LDO2—OUTPUT VOLTAGE TRANSIENT1 V LDO1 2.6V ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI ( 3.7V, circuit of Figure 1, T PV_ EN LDO1 SHORT CIRCUIT I LDO1 V LDO1 V LDO2 V LDO3 1ms/div KEY—ON/OFF BY ALC V SENSE ...
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WLED Charge Pump, RGB, OLED Boost 3.7V, circuit of Figure 1, T PV_ EN STEP-UP EFFICIENCY vs. LOAD CURRENT 3.6V ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI ( 3.7V, circuit of Figure 1, T PV_ EN STEP-UP LINE TRANSIENT 4. 3.2V V OUT 400 µ s/div STEP-UP OUTPUT VOLTAGE TRANSIENT 16V ...
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WLED Charge Pump, RGB, OLED Boost, TOP VIEW + PIN NAME ExTERNALLY CONNECTED TO PGND A1, A7, ECAGND Connect to AGND G1, G7 POWER INPUT SUPPLY AND POWER GROUND Supply Voltage Input for ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI PIN NAME LDO fUNCTION Output of LDO1. The default value is 2.6V. Bypass LDO1 to AGND with a 1FF ceramic capacitor as A3 LDO1 close as possible to the ...
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WLED Charge Pump, RGB, OLED Boost, PIN NAME WLED AND RGB WLED Current Sink Regulator. Current into WLED1 is based upon the programmed internal I D7 WLED1 registers. Connect WLED1 to the cathodes of external LEDs. WLED1 is high impedance ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI INPUT 2.7V TO 5.5V 4.7µF 4.7µF 0.1µF 1.7V TO 5.5V 0.1µF 0.1Hz TO 15kHz 0.1µF 2Hz TO 200Hz PLAYR PLAYG PLAYB LIGHT SENSOR 5.1kI 2.2µF 1.7V TO 5.5V 2.2µF ...
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WLED Charge Pump, RGB, OLED Boost, PIN PV1, PV2, PV3, PV5 PV4 V DD BIAS LDO1 LDO2 LDO3 FILT REFBP C1P, C1N C2P, C2N NEG WLED1–WLED8 RLED, GLED, BLED CHG SW, LX OUT SENSE ALC Note: All output capacitors are ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Detailed Description The MAX8930 integrates a negative charge pump for both white LED display backlighting with ambient light control (ALC) function, content adaptive interface (CAI) function, and R/G/B LED. ...
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WLED Charge Pump, RGB, OLED Boost, WLED1–WLED8 Driver Operation The white LED current regulators are composed of 4 main-group drivers (WLED1–WLED4) and 4 subgroup drivers (WLED5–WLED8). The current of the main-group 2 LEDs can be selected ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI 2 CAI ENABLED BY I CAI (DPWM) SIGNAL 2 DIMMING BY I (MAINI2C = 1 AT 02h) WLED CURRENT Figure 3. Timing Diagram of Stand-Alone CAI ...
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WLED Charge Pump, RGB, OLED Boost, BIAS BIAS VOLTAGE (3V) LIGHT 8-BIT SENSOR ADC SENSE (LOG OR LINEAR) Figure 4. ALC Block Diagram the embedded digital processing. This data can be read 2 through the I C (0Dh). The conversion ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 1. Brightness Data Conversion Settings AMBIENT LEVEL (LINEAR TYPE Of SENSOR Table ...
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WLED Charge Pump, RGB, OLED Boost, The Operation of ALC Function Table 3 shows the various conditions on the main WLED_ current for LCD backlight default value applied from the BIAS pin. The sensed voltage at ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI the next 16.4ms, the internal digital logic block tries to read the ambient light condition 16 times and calculate the average data. This read data is automatically saved in ...
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WLED Charge Pump, RGB, OLED Boost, KEY (Keypad Backlight) ON/OFF Control Operation The keypad lighting is controlled by 3 methods, which are all exclusive of each other. These are: • ALC • PWM 2 • command If KBALC ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI The ambient light level at which the key backlight is turned off can be set in register 0Fh. The default ambi- ent light level is Ah, which is bright ...
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WLED Charge Pump, RGB, OLED Boost, Table 6. Recommended Capacitors VALUE DESIGNATION (µf) C 2.2 PV3 C PV4 2.2 (in case of external supply LDO1 C 1 LDO2 C 2.2 LDO3 response. Connect C as close as possible ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Smaller inductance values typically offer smaller physi- cal size for a given series resistance or saturation cur- rent. The inductor’s saturation current rating should be greater than the peak ...
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WLED Charge Pump, RGB, OLED Boost, SDA LOW SCL t HIGH t HD,STA t R START CONDITION Figure 11. START and STOP Conditions SDA SCLK 2 Figure 12 Master and Slave Configuration One data bit ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI SDA OUTPUT FROM TRANSMITTER SDA OUTPUT FROM RECEIVER SCL FROM MASTER 2 Figure 13 Acknowledge The device that acknowledges must pull down the SDA line during the ...
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WLED Charge Pump, RGB, OLED Boost, Table 12. Register Map ADDRESS POR BIT 7 BIT 6 (hEx) (hEx) 00h 00 RESET SUEN 01h 00 WLED7 WLED6 02h 26 CAI CHG 03h 6C LDO10 LDO11 04h BA LDO 30 LDO 31 ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 12. Register Map (continued) ADDRESS POR BIT 7 BIT 6 (hEx) (hEx) 09h 01 ISLED7 ISLED6 0Ah 00 x DSLP3 0Bh 00 x DSLP3 0Ch 10 SBIAS LSTY ...
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WLED Charge Pump, RGB, OLED Boost, Table 12. Register Map (continued) ADDRESS POR BIT 7 BIT 6 (hEx) (hEx) 16h 6A CADA67 CADA66 17h 79 CADA77 CADA76 18h 89 CADA87 CADA86 19h 98 CADA97 CADA96 1Ah A7 CADAA7 CADAA6 1Bh ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 13. On/Off Register 1 for Boost, LDO1, LDO2, LDO3, Main WLED, and ALC ADDRESS POR BIT 7 (hEx) (hEx RESET NAME POR R/W RESET 0 R/W ...
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WLED Charge Pump, RGB, OLED Boost, Table 15. On/Off Register 3 ADDRESS POR BIT 7 (hEx) (hEx CAI NAME POR R/W CAI 0 R/W CHG 0 R/W KYI2C 1 R/W WLED8 0 R/W SUB8 0 R/W TWAIT 1 ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 17. LDO3, Step-Up, LDO1, LDO2, and LDO3 Active Discharge function Register ADDRESS POR R/W (hEx) (hEx R/W LDO30 NAME POR LDO1ADIS 1 ...
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WLED Charge Pump, RGB, OLED Boost, Table 19. Dimming Current Register for Sub WLED5 ADDRESS POR BIT 7 (hEx) (hEx ISLED7 NAME POR R/W ISLED7 0 R/W ISLED6 0 R ISLED5 0 R ISLED4 ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 21. Dimming Current Register for Sub WLED7 ADDRESS POR BIT 7 (hEx) (hEx ISLED7 NAME POR R/W ISLED7 0 R/W ISLED6 0 R ISLED5 ...
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WLED Charge Pump, RGB, OLED Boost, Table 23. Slope Control Register for Main WLEDs ADDRESS POR BIT 7 (hEx) (hEx Reserved NAME POR R/W DSLP3 0 R/W DSLP2 0 R/W DSLP1 0 R/W Slope control for ramp down ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 26. ALC Control Register 1 ADDRESS POR BIT 7 (hEx) (hEx SBIAS NAME POR R/W 1: Measurement cycle is synchronized SBIAS 0 R/W 0: Always on ...
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WLED Charge Pump, RGB, OLED Boost, Table 27. ALC Control Register 2 ADDRESS POR BIT 7 (hEx) (hEx ALDA1 NAME POR R/W ALDA_ R 16 different levels based on ambient light conditions ALDA1 ALDA2 ALDA3 ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 28. Keypad Control Register ADDRESS POR BIT 7 (hEx) (hEx KYSL1 NAME POR R/W KYSL_ 0 R/W PWM slope time is the transition time for stepping ...
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WLED Charge Pump, RGB, OLED Boost, Table 29. Keypad Control Register for ALC ADDRESS POR BIT 7 (hEx) (hEx KYHS1 NAME POR R/W The hysteresis values between ON and OFF. KYHS_ 10 R/W The value should meet the ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI Table 30. Control Register in ACL 1–16 ADDRESS POR BIT 7 (hEx) (hEx) 10~1F — CADA*7 NAME POR R CADA* — R ...
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WLED Charge Pump, RGB, OLED Boost, Table 33. Green LED Dimming Current Control Register ADDRESS POR BIT 7 (hEx) (hEx GLED7 NAME POR R/W GLED7 0 R/W GLED6 0 R GLED5 0 R GLED4 ...
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WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI INPUT 2.7V TO 5.5V INPUT 1.7V TO 5.5V LIGHT SENSOR 50 _____________________________________________________________________________________ C1P C1N C2P PV2 PV1 PGND1 PGND2 PV3 PV5 PV4 REFBP MAX8930 V DD BIAS SENSE FILT ...
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WLED Charge Pump, RGB, OLED Boost, Good PCB layout is essential for optimizing performance. Use large traces for the power-supply inputs to minimize losses due to parasitic trace resistance and route heat away from the device. Good design minimizes excessive ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 52 2010 Maxim Integrated Products © ...