Sharp GX10i, Руководство по обслуживанию

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6 – 1
GX10i
CONFIDENTIAL
CHAPTER 6. OTHERS
[1] Function table of IC
IC001 VH+-1R (LT1937): DC - DC
Pin No.
Terminal Input/
Description of terminal
name Output
1 SW Output LED voltage output
2 GND – Ground
3 FB Input LED ground
4 SHDN Input Chip enable
5 GND – Ground
6 VIN Input Input
IC002 VHI-1L (ADM8830): CHARGE PUMP REGULATOR
Pin No.
Terminal Input/
Description of terminal
name Output
1 VCC Input Positive supply voltage input
2 VOUT Output Voltage doubler output
3 LDO_IN Input Voltage regulator input
4 +5 VOUT Output +5.1 V output pin
5 +5 VIN Input +5.1 V input pin
6 LDO_ Input Control logic input
ON/OFF
7 SHDN Input Digital input
8 SCAN/ Input Drive mode input
BLANK
9 CLKIN Input External clock input
10 +15 V Output +15.3 V output pin
OUT
11 C3– Input External capacitor
12 C3+ Input External capacitor
13 C2– Input External capacitor
14 C2+ Input External capacitor
15 C4– Input External capacitor
16 C4+ Input External capacitor
17 –10 V Output –10.2 V output pin
OUT
18 GND – Devide ground pin
19 C1– Input External capacitor
20 C1+ Input External capacitor
A1
RAMP
GENERATOR
COMPARATOR
DRIVER
1.2MHz
OSCILLATOR
SW VIN FB
1 3
GND
2 5
A2
R Q
S
Q1
0.2 ohms
V
REF
1.25V
SHUTDOWN
95mV
Rc
Cc
SHDN
6
4