Sharp Vodafone 802SH, Service Manual

Page: 95 / 121

802SH
6 – 18
CONFIDENTIAL
IC1303 VHIXC621933-1L (XC6219C332DR): 3.3 V REGULATOR
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
IC1504 VHI-1R (FA3727R): POWER CONTROL
Pin No. Terminal name Description of terminal
1 VIN Power supply input
2* NC Not used
3 VOUT Output
4* NC Not used
5 VSS Earth
6 CE ON/OFF control
Pin No. Terminal name Input/Output Description of terminal
1 SNSG – DC/DC converter detection resistance earth
2 VCC – Circuit system power supply input
3 GND2 – Earth
4 VOUT1 Output LDO_1 output
5 VIN1 Input LDO_1 power supply input
6 EN1 Input LDO_1 enable terminal
7 EN4 Input LDO_4 enable terminal
8 VOUT4 Output LDO_4 output
9 VIN2 Input LDO_3, LDO_4 power supply input
10 VOUT3 Output LDO_3 output
11 GND3 – Earth
12 VOUT5 Output LDO_5 output
13 VIN3 Input LDO_2, LDO_5 power supply input
14 VOUT2 Output LDO_2 output
15 EN3 Input LDO_3 enable terminal
16 EN2 Input LDO_2 enable terminal
17 EN5 Input LDO_5 enable terminal
18 CREF – Reference voltage capacitor connection terminal
19 LPM Input Low Power Mode signal input
20 MODE Input Output PchMOS slew mode signal input
21 PGND – Power earth
22 VOUT Output DC/DC converter driver output
23 PVCC – Power system power supply input
24 CS – Soft start terminal
25 GND1 – Earth
26 FB Output Error amplifier output
27 IN- Input Error amplifier inverting input
28 ISNS Input LDO load detection terminal
-
+
CE
ON/OFF
Control
each circuit
Current
Limit
Voltage
Reference
VIN
VOUT
VSS