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參數(shù)資料
| 型號： | MAX8727ETB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-LCCC -55 to 125 |
| 中文描述： | 2.4 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, DSO10 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEED-3, TDFN-10 |
| 文件頁數(shù)： | 6/13頁 |
| 文件大小： | 253K |
| 代理商： | MAX8727ETB |
M
TFT-LCD Step-Up DC-DC Converter
6
_______________________________________________________________________________________
PIN
NAME
FUNCTION
1
COMP
Compensation Pin for Error Amplifier. Connect a series RC from COMP to ground. See the
Loop
Compensation
section for component selection guidelines.
2
FB
Feedback Pin. The FB regulation voltage is 1.24V nominal. Connect an external resistive voltage-divider
between the step-up regulator’s output (V
OUT
) and GND, with the center tap connected to FB. Place the
divider close to the IC and minimize the trace area to reduce noise coupling. Set V
OUT
according to the
Output Voltage Selection
section.
Shutdown Control Input. Drive
SHDN
low to turn off the MAX8727.
Ground. Connect pins 4 and 5 directly together.
Ground. Connect pins 4 and 5 directly together.
3
4
5
SHDN
GND
GND
6
LX
Switch Pin. LX is the drain of the internal MOSFET. Connect the inductor/rectifier diode junction to LX and
minimize the trace area for lower EMI. Connect pins 6 and 7 directly together.
7
LX
Switch Pin. LX is the drain of the internal MOSFET. Connect the inductor/rectifier diode junction to LX and
minimize the trace area for lower EMI. Connect pins 6 and 7 directly together.
8
IN
Supply Pin. Bypass IN with a minimum 1μF ceramic capacitor directly to GND.
9
FREQ
Frequency-Select Input. When FREQ is low, the oscillator frequency is set to 640kHz. When FREQ is high, the
frequency is 1.2MHz. This input has a 5μA pulldown current.
10
SS
Soft-Start Control Pin. Connect a soft-start capacitor (C
SS
) to this pin. Leave open for no soft-start. The soft-
start capacitor is charged with a constant current of 4.5μA. Full current limit is reached after t = 2.5
×
10
5
C
SS
.
The soft-start capacitor is discharged to ground when
SHDN
is low. When
SHDN
goes high, the soft-start
capacitor is charged to 0.4V, after which soft-start begins.
Pin Description
LX
LX
FB
GND
GND
FREQ
IN
COMP
SS
1
4
5
2
3
9
8
6
7
10
V
OUT
15V/600mA
V
IN
4.5V TO 5.5V
SHDN
MAX8727
C1
10
μ
F
6.3V
R3
10
C3
1
μ
F
C6
33nF
C4
330pF
C5
39pF
L1
3.6
μ
H
D1
R2
28.0k
1%
R4
100k
R1
309k
1%
C2
4.7
μ
F
25V
C7
4.7
μ
F
25V
C8
4.7
μ
F
25V
Figure 1 Typical Operating Circuit
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PDF描述 |
|---|---|
| MAX876BCPA | Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References |
| MAX873 | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-CFP -55 to 125 |
| MAX873-MAX876 | Octal Buffers/Drivers With 3-State Outputs 20-LCCC -55 to 125 |
| MAX873ACPA | Octal Buffers/Drivers With 3-State Outputs 20-CDIP -55 to 125 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8727ETB+ | 制造商:Maxim Integrated Products 功能描述:TFT-LCD STEP-UP DC-DC CONVERTER - Rail/Tube |
| MAX8727ETB+T | 功能描述:LCD 驅(qū)動器 TFT-LCD Step-Up DC/DC Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8727ETB+TG104 | 功能描述:LCD 驅(qū)動器 TFT-LCD Step-Up DC/DC Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8727ETB-T | 功能描述:LCD 驅(qū)動器 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8727EUB+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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