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參數(shù)資料
| 型號： | MAX778LCPA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low-Voltage Input, 3V/3.3V/5V/ Adjustable Output, Step-Up DC-DC Converters |
| 中文描述： | 1 A SWITCHING REGULATOR, 150 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 121K |
| 代理商： | MAX778LCPA |
MAX777L/MAX778L/MAX779L
Low-Voltage Input, 3V/3.3V/5V/
Adjustable Output, Step-Up DC-DC Converters
6
_______________________________________________________________________________________
A: SHDN, 2V/div
B: VOUT, 1V/div
VOUT = 3V
MAX778L
START-UP TIME
A
B
10ms/div
_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
NAME
FUNCTION
1
ILIM
Sets switch current-limit input. Connect to IN for 1A current limit. A resistor from ILIM to IN sets lower
peak inductor currents.
2
IN
Input from battery
3
AGND
Analog ground. Not internally connected to PGND.
PIN
4
PGND
Power ground. Must be low impedance; solder directly to ground plane or star ground. Connect to
AGND, close to the device.
5
LX
Collector of 1A NPN power switch and emitter of Active Rectifier PNP.
6
OUT
Voltage output. Connect filter capacitor close to pin.
7
SHDN
Shutdown input disables power supply when low. Also disconnects load from input. Threshold is set at
VIN/2.
8
N.C.
(MAX777L)
No connect—not internally connected.
SEL
(MAX778L)
Selects the main output voltage. 3.3V when hard-wired to AGND, 3.0V when left open.
______________________________________________________________Pin Description
FB
(MAX779L)
Feedback input for adjustable-output operation. Connect to an external voltage divider between VOUT
and AGND.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX778LCSA | 制造商:Maxim Integrated Products 功能描述: |
| MAX780ACAG | 功能描述:電源開關(guān) IC - 配電 RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| MAX780ACAG+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX780ACAG-T | 功能描述:電源開關(guān) IC - 配電 RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| MAX780ACNG | 功能描述:電源開關(guān) IC - 配電 RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
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