Sharp 902SH Service Manual page 84

IC620 VHIM1820XCP-1L (MAX1820XEBC): DCDC
Pin No. Terminal name
1 /SKIP
2 COMP
3 OUT
4 REF
5 GND
6 PGND
7 LX
8 BATT
9 /SHDN
10 SYNC
BATT 8
VOLTAGE
REFERENCE
5
GND
3
OUT
REF 4
IC630 RH-IX3045AFZZL (RF9266): W-CDMA POWER AMP.
Pin No. Terminal name
1 V CTRL (VREG)
2 V CTRL (VREG)
3 GND
4 VCC_BIAS
5 VCC_BIAS
6 GND
7 VCC DET
8 V DETECT
9 GND
10 RF OUT
11 GND
12 GND
13 GND
14 GND
15 VCC2
16 VCC2
17 GND
18 VCC1
19 VCC1
20 GND
21 RF IN
22 GND
Pkg GND
Base
CONFIDENTIAL
Input/Output
Input PWM/Skip-mode input
– Compensation
Input Output voltage sense input
Input External reference input
– Earth
– Power earth
Output Inductor connection
Input Supply voltage input
Input Active-low, shutdown control input
Input Clock synchronisation input
ERROR
1.25 V
TO
SIGNAL
IC BIAS
SLOPE COMP
CURRENT
TRANSIMPEDANCE
SENSE
ERROR AMP
CLAMP
SKIP
THRESHOLD
2
COMP
19
20
GND
21
RF IN
22
GND
1
Description of terminal
PWM
COMPARATOR
PWM
CONTROL
AND
SKIP LOGIC
SKIP
COMPARATOR
+13 OR 1 MHz
+18 OSCILLATOR
10
SYNC /SKIP
18 17 16 15 14
Interstage MN
IMN
Power
Bias Control
Detector
Network
2 3 4 5 6
6 – 7
LX
7
6 PGND
1 9 /SHDN
13 12
11
GND
10
RF OUT
OMN
9
GND
7 8
902SH