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參數(shù)資料
| 型號： | MAX1778 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 32-Bit Digital Signal Controller with ROM 100-LQFP -40 to 85 |
| 中文描述： | 四路輸出、TFT LCD DC-DC轉換器，帶有緩沖器 |
| 文件頁數(shù)： | 17/38頁 |
| 文件大?。?/td> | 1051K |
| 代理商： | MAX1778 |
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M
Quad-Output TFT LCD DC-DC
Converters with Buffer
______________________________________________________________________________________
17
Pin Description
PIN
MAX1778
MAX1881
MAX1880
MAX1882
MAX1883
MAX1884
MAX1885
NAME
FUNCTION
1
1
1
1
FB
Main Step-Up Regulator Feedback Input. Regulates to 1.25V
nominal. Connect a resistive divider from the output (V
MAIN
) to FB
to analog ground (GND).
2
2
2
2
INTG
Main Step-Up Integrator Output. When using the integrator,
connect 1000pF to analog ground (GND). To disable the
integrator, connect INTG to REF.
3
3
3
3
IN
Main Supply Voltage. The supply voltage powers the control
circuitry for all of the regulators and may range from 2.7V to 5.5V.
Bypass with a 0.1μF capacitor between IN and GND, as close to
the pins as possible.
4
4
4
4
BUF+
VCOM Buffer (Operational Transconductance Amplifier) Positive
Feedback Input. Connect to GND to select the internal resistive
divider that sets the positive input to half the amplifier
’
s supply
voltage (V
BUF+
= V
SUPB
/2).
5
5
5
5
BUF-
VCOM Buffer (Operational Transconductance Amplifier) Negative
Feedback Input
6
6
6
6
SUPB
VCOM Buffer (Operational Transconductance Amplifier) Supply
Voltage
7
7
7
7
BUFOUT
VCOM Buffer (Operational Transconductance Amplifier) Output
8
8
8
8
GND
Analog Ground. Connect to power ground (PGND) underneath the
IC.
9
9
9
9
REF
Internal Reference Bypass Terminal. Connect a 0.22μF ceramic
capacitor from REF to analog ground (GND). External load
capability up to 50μA.
10
10
FBP
Positive Charge-Pump Regulator Feedback Input. Regulates to
1.25V nominal. Connect a resistive divider from the positive
charge-pump output (V
POS
) to FBP to analog ground (GND).
11
11
FBN
Negative Charge-Pump Regulator Feedback Input. Regulates to
0V nominal. Connect a resistive divider from the negative charge-
pump output (V
NEG
) to FBN to the reference (REF).
12
12
10
10
SHDN
Active-Low Shutdown Control Input. Pull
SHDN
low to force the
controller into shutdown. If unused, connect
SHDN
to IN for normal
operation. A rising edge on
SHDN
clears the fault latch.
13
11
SUPL
Low-Dropout Linear Regulator Input Voltage. Can range from 4.5V
to 15V. Bypass with a 1μF capacitor to GND (see
Capacitor
Selection and Regulator Stability
). Connect both input pins
together externally.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1880 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1881 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1882 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1883 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1884 | Quad-Output TFT LCD DC-DC Converters with Buffer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1778EUG | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1778EUG+ | 功能描述:直流/直流開關轉換器 Quad-Output TFT LCD w/Buffer RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1778EUG+T | 功能描述:直流/直流開關轉換器 Quad-Output TFT LCD w/Buffer RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1778EUG-T | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1778EVKIT | 功能描述:電源管理IC開發(fā)工具 MAX1778/80/81/82 Eval Kit RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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