LG KU580 Service Manual - Page 46

3. Technical Brief 3.2.4 Camera Regulator APP_GP03_CAM_LDO_CTRL enables 1.8V & 2.8V Camera Regulator for both 2M and VGA Camera. Charge Pump includes two voltage regulators. (2M : 2.8V for analog, 1.8V for I/O, 1.5V for digital), (VGA : 2.8V for analog, 1.8V for I/O, digital) VBAT APP_GP10_BL_CTRL APP_GP03_CAM_LDO_CTRL ESD9X5.0ST5G INSTPAR ZD101 C102 10u U101 1 2 PIN IN MAX8631XETI C1P 23 3 24 29 GND PGND BGND C1N C2P 22 26 C2N 27 OUT 25 20 19 21 ENM1 ENM2 ENF 18 ENLDO 28 17 P1 P2 8 SETM 7 SETF 6 REFBP 16 M1 M2 15 M3 M4 14 13 12 F1 F2 11 10 F3 F4 9 LDO1 4 5 LDO2 C107 0.01u C101 1u C104 1u C103 10u LCD_BL1 LCD_BL2 LCD_BL3 LCD_BL4 C108 C109 1u 1u CPO VCAM_2V8 VCAM_1V8 R116 100K R117 100K R118 100K R121 1% 6.8K R122 1% 10K Figure 3-2-6. 1.8V and 2.8V Camera Regulator in Charge Pump 1.5V LDO is used for only 2M digital core. It's derived from AB3000 and controlled by camera driver file. C12 VDD_A B11 EXTLDO F12 VDD_D D12 VDD_E A11 VDD_C B12 VDD_H A9 VDD_F A7 VDD_G M12 VDD_K J11 VDDLP B2 VBUCK A2 VDDBUCK A1 SWBUCK C601 C602 C603 1u 1u 2.2u R606 1% 0 R607 1% 0 R608 1% 0 VDDC_2V75 VDDH_CAM_CORE VDDF_2V5 VDDG_2V85 VDDK_2V75 TP600 C607 C608 C609 C610 C611 C612 1u 1u 1u 1u 1u 33nF VDDBUCK 1608 120ohm(@100MHz) FB600 VBAT BLM18PG121SN1J 3*3*1.2 0.85A 155mohm 30% L600 4.7uH R609 2.2K VCORE Parallel with VCORE _ VDDE_1V8 VDIGRAD_1V8 to All I/O Supplies and Memory to RF3000 and RF3100 digital VDDC_2V75 VDDH_CAM_CORE VDDF_2V5 VDDG_2V85 VDDK_2V75 VBACKUP to Hall Switch, AB3000 BEAR and Headph MICRON 1.8V, SS 1.5V to DB3100 analog to SD Card and LCD to Bluetooth to AB3000 RTC module VBUCK_FB VCORE to DB3100 CORE 0 BAT600 Figure 3-2-7. 1.5V Camera LDO in AB3000 G4 ADSTR B9 ADOUT C8 VDDADC Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 47 - LGE Internal Use Only