Sharp GX20 Service Manual - Page 143

Ic201 Vhixc620930-1l Xc6209b302mr: High Speed Ldo Regulator

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CONFIDENTIAL IC201 VHIXC620930-1L (XC6209B302MR): HIGH SPEED LDO REGULATOR Pin No. 1 2 3 4* 5 Terminal name VIN VSS CE NC VOUT Input/Output Input - Input - Output Input Ground ON/OFF Control Not used Output Description of terminal In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside. CE 3 ON/OFF Control Each ciruit - Current + Limit 1 VIN 5 VOUT Voltage Reference 2 VSS IC202 VHIAD340818-1L (ADP3408ACP) POWER SUPPLY Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17* 18 19 20 21 22 23 24* 25 26* 27 28 29 30 31 32* Terminal name SIMEN VRTCIN VRTC BATSNS MVBAT CHRDET CHRIN GATEIN GATEDR DGND DGND ISENSE EOC CHGEN RESCAP RESET NC VSIM VBAT2 VMEM VCORE VBAT VAN NC VTCXO REFOUT AGND TCXOEN PWRONIN PWRONKEY ROWX NC Input/Output Input Input Output Input Output Output Input Input Output - - Input Input Input Input Output - Output Input Output Output Input Output - Output Output - Input Input Input Output - Description of terminal SIM LDO enable RTC LDO input voltage Real time clock supply/coin cell battery chager Battery voltage sense input Divided battery voltage output Charge detect output Charger input voltage Microprocessor gate input signal Gate drive output Digital ground Digital ground Charge current sense input End of charge signal Charge enable for GATEIN, NiMH pulse charging Reset delay time Main reset Not used SIM LDO output Battery input voltage 2 Memory LDO output Digital core LDO output Battery input voltage Analog LDO output Not used TCXO LDO output Output reference Analog ground TCXO LDO enable and MVBATenable Power on/off signal from microprocessor Power on/off key Power key interface output Not used In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside. 6 - 11 GX20

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GX20
6 – 11
CONFIDENTIAL
IC201 VHIXC620930-1L (XC6209B302MR): HIGH SPEED LDO REGULATOR
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
IC202 VHIAD340818-1L (ADP3408ACP) POWER SUPPLY
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Terminal name
Input/Output
Description of terminal
1
VIN
Input
Input
2
VSS
–
Ground
3
CE
Input
ON/OFF Control
4*
NC
–
Not used
5
VOUT
Output
Output
Pin No.
Terminal name
Input/Output
Description of terminal
1
SIMEN
Input
SIM LDO enable
2
VRTCIN
Input
RTC LDO input voltage
3
VRTC
Output
Real time clock supply/coin cell battery chager
4
BATSNS
Input
Battery voltage sense input
5
MVBAT
Output
Divided battery voltage output
6
CHRDET
Output
Charge detect output
7
CHRIN
Input
Charger input voltage
8
GATEIN
Input
Microprocessor gate input signal
9
GATEDR
Output
Gate drive output
10
DGND
–
Digital ground
11
DGND
–
Digital ground
12
ISENSE
Input
Charge current sense input
13
EOC
Input
End of charge signal
14
CHGEN
Input
Charge enable for GATEIN, NiMH pulse charging
15
RESCAP
Input
Reset delay time
16
RESET
Output
Main reset
17*
NC
–
Not used
18
VSIM
Output
SIM LDO output
19
VBAT2
Input
Battery input voltage 2
20
VMEM
Output
Memory LDO output
21
VCORE
Output
Digital core LDO output
22
VBAT
Input
Battery input voltage
23
VAN
Output
Analog LDO output
24*
NC
–
Not used
25
VTCXO
Output
TCXO LDO output
26*
REFOUT
Output
Output reference
27
AGND
–
Analog ground
28
TCXOEN
Input
TCXO LDO enable and MVBATenable
29
PWRONIN
Input
Power on/off signal from microprocessor
30
PWRONKEY
Input
Power on/off key
31
ROWX
Output
Power key interface output
32*
NC
–
Not used
+
-
1
2
3
CE
VSS
VIN
ON/OFF
Control
Current
Limit
Voltage
Reference
Each ciruit
5 VOUT