参数资料
型号: MAX8758ETG+T
厂商: Maxim Integrated Products
文件页数: 10/20页
文件大小: 0K
描述: IC REG STEP UP 24-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 转换器,TFT,LCD
输入电压: 1.8 V ~ 5.5 V
输出数: 1
输出电压: 5V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-TQFN-EP(4x4)
包装: 带卷 (TR)
Step-Up Regulator with Switch Control
and Operational Amplifier for TFT LCD
Typical Operating Circuit
The typical operating circuit (Figure 1) of the MAX8758
is a power-supply solution for TFT LCD panels in note-
book computers. The circuit generates a +8.5V source
driver supply, and approximately +22V and -7V gate
D2
driver supplies. The input voltage range for the IC is
from +1.8V to +5.5V, but the Figure 1 circuit is
designed to run from 2.7V to 3.6V. Table 1 lists some
selected components and Table 2 lists the contact
information of component suppliers.
D4
C17
0.1 μ F
D3
V GOFF
-8V/20mA
C15
0.1 μ F
C6
0.1 μ F
C18
0.1 μ F
C19
0.1 μ F
V IN
+1.8V TO +5.5V
L1
4.7 μ H
D1
V MAIN
+8.5V/300mA
C1
3.3 μ F
6.3V
C2
3.3 μ F
6.3V
R4
10 ?
LX
R1
200k ?
1%
C3
4.7 μ F
10V
C4
4.7 μ F
10V
C5
4.7 μ F
10V
R10
100k ?
C6
1 μ F
IN
FB
R2
34.0k ?
1%
FREQ
GND
R3
100k ?
SHDN
MAX8758
PGND
COMP
C7
220pF
C8
33pF
LDO
OUT
SUPB
C9
0.22 μ F
C12
0.1 μ F
R5
100k ?
C10
0.022 μ F
SS
POSB
R6
100k ?
NEGB
MODE
C11
150pF
OUTB
TO VCOM
BACKPLANE
R7
51.1k ?
1%
THR
FROM TCON
CTL
R8
R9
20k ?
DRN
DLP
C13
20.0k ?
1%
0.033 μ F
V GON
+24V/20mA
GON
SRC
C14
0.1 μ F
Figure 1. Typical Operating Circuit
10
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