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MAX8930EWJ+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX8930EWJ+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 52 page ________________________________________________________________ _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. WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI 19-4921; Rev 0; 3/10 Typical Operating Circuit appears at end of data sheet. General Description The MAX8930 integrates a charge pump for white LED display backlighting with ambient light control (ALC) feature. The high-efficiency, adaptive-mode 1x/-0.5x charge pump drives up to 11 LEDs (8 WLEDs + RGB LED) with constant current for uniform brightness. The LED current is adjustable from 0.1mA to 25.6mA in 256 linear steps through I2C. High accuracy and LED-to-LED current matching are maintained throughout the adjust- ment range. The MAX8930 includes soft-start, thermal shutdown, open-circuit, and short-circuit protection. Three 200mA LDOs are provided with programmable output voltages to provide power to external circuitry. These three LDOs can also be configured for a GPO function through the I2C. A step-up converter is also available on the MAX8930 for biasing a PMOLED sub- panel. The MAX8930 is available in the 49-bump, 3.17mm x 3.17mm WLP package. Features S White_LED_Charge_Pump S Adaptive_1x_or_-0.5x_Negative_Modes S 11_Low-Dropout_LED_Current_Sinks_with_25.6mA_ to_0.1mA_in_256_Dimming_Steps S Ramp-Up/Down_Control_for_Main_White_LED S Ramp-Up/Down_Control_for_RGB_LED S Individual_Brightness_Control_for_Each_White,_ RGB_LED S Low_240µA_(typ)_Quiescent_Current S Ambient_Light_Control_(ALC)_for_Any_Type_of_Light_ Sensor S Content_Adaptive_Interface S I2C-Compatible_Control_Interface S Three_Programmable_LDOs_Up_to_200mA S Step-Up_DC-DC_Converter_with_Programmable_ Output_for_PMOLED_Application S Low_0.1µA_Shutdown_Current S 2.7V_to_5.5V_Supply_Voltage_Range S Thermal_Shutdown S Open_and_Short-Circuit_Protection Applications Cell Phones and Smartphones PDAs, Digital Cameras, Camcorders, and Other Portable Equipment Ordering Information +Denotes a lead(Pb)-free/RoHS-compliant package. Simplified Application Circuit EVALUATION _KIT AVAILABLE PART TEMP_RANGE PIN-PACKAGE MAX8930EWJ+ -40NC to +85NC 49 WLP 0.4mm pitch µP INPUT 1.7V TO 5.5V INPUT 2.7V TO 5.5V PV4 PV5 PV1 PV2 PV3 WLED1 INPUT WLED2 WLED3 WLED4 WLED5 WLED6 WLED7 WLED8 SCL SDA EN CAI PLAYR PLAYG PLAYB REFBP VDD FILT SENSE LIGHT SENSOR BIAS RLED GLED BLED CHG LDO1 2.3V TO 3.1V, 200mA 2.3V TO 3.1V, 200mA 1.2V, 1.5V, 1.8V, 2.5V, 200mA 13V TO 16.5V LDO2 LDO3 OUT KEY INPUT MAX8930 |
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