
3. TECHNICAL BRIEF
- 41 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
͑
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ͑
͑
3.9.3 TPS658621D for T20
The TPS658621D provides an easy to use, fully integrated solution for handheld devices, integrating
charge management, multiple regulated power supplies, system management and display functions in a
small 6x6 package. The I
2
C interface enables control of a wide range of subsystem parameters. Internal
registers have a complete set of status information, enabling easy diagnostics and host-controlled
handling of fault conditions.
Figure. AP Power Block Diagram
LGE Internal Use Only
SM0 (1.86A)
SM1 (1.86A)
SM2 (1.86A)
LDO0 (300mA)
I2C
Controller
+
Li-Ion
(6,400mAh)
RTC_OUT
BBAT
+
V
_P
O
W
ER
RA
IL
BAT
TPS658621A
SM1_EN
SM0_EN
nRESET
nINT
CLK32K
1.0~1.2V (CORE)
0.9~1.0V (CPU VDD)
1.0~1.2V (RTC)
1.1V (AVDD_PLL)
3.3V (AVDD_USB)
1.8V (AVDD_OSC, VDDIO_SYS )
2.85V (VPP_FUSE)
3.3V (AVDD_HDMI)
1.8V (AVDD_HDMI_PLL)
2.85V (VDD_DDR_RX)
LDO1 (300mA)
LDO2 (300mA)
LDO3 (300mA)
LDO4 (300mA)
LDO5 (300mA)
LDO6 (300mA)
LDO7 (300mA)
LDO8 (300mA)
LDO9 (300mA)
V2V2
SDA
SCL
Charger
1.5A
Tegra 2 (T250)
LPDDR2 (1GB)
1.2V
1.8V
eMMC
32GB
2.85V (VCC)
1.2V (VDDIO_HSIC, AVDD_CSI_DSI)
3.3V (VDD_SDIO,LCD)
VDD_3V3
VDDIO_PEX_CLK
Sensor’s
ACCELEROMETER
Gyro
COMPAS
CODEC(WM8894)
3.7V (Don’t use)
VDD_1V8
VDD_1V2
1.8V (VCCQ)
MIC2238
AAT2153
VDD_5V0
AAT1217
1.8V (VDDIO_AUDIO, OSC, NAND,
BT, UART, VI)
HDMI
8.9” LCD (LGD)
White LED (4
Ý
7)
3.3V
VDD_WLED
LP8551
1.8V (VDD), LDO2
SPKVDD, LDO1
VDD_3V3
CAMERA, VGA
LP8720
VDD0_3V3
V_CHG_SYS
DC 5V
USB 5V
3.3V
Flash
AAT1270
LP8720
Google Tablet : Power
Bead
Bead
Bead
RP101K332D
VDD_3V3_ALWAYS
Thermal sensor
L/S
Touch Panel IO Voltage
L/S
Touch Panel Main Voltage
BT/WiFi
VDD_1V8
Indicator LED
Ambient Light Sensor
Bead
VBAT
RF_MODULE
AAT1270
VDD_3V3_ALWAYS
GPS
VDD_GPS_1V8