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參數(shù)資料
| 型號(hào)： | MAX8878EZK50-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Analog IC |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.12 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大小： | 57K |
| 代理商： | MAX8878EZK50-T |
General Desc ription
The MAX881R IC is an inverting, charge-pump DC-DC
converter with a low-noise, regulated output. Low out-
put ripple voltage makes this device ideal for biasing
the GaAsFETs commonly found in cellular telephone
transmitters.
The MAX881R evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount board. Provisions are
made for mounting a second voltage-divider resistor,
which is required for setting output voltages other than
-2V. A special scope-probe socket is also mounted on
the board, so output noise can be observed on an
oscilloscope.
Features
o
1mVp-p Output Voltage Ripple
o
2.5V to 5.5V Input Range
o
Uses One 4.7μF and Three 1μF Ceramic
Capacitors
o
-2V Regulated Output (or Adjustable)
o
4mA Output Current
o
Power OK (
POK
) Output
o
Fully Assembled and Tested Surface-Mount
Board
Quic k S tart
The MAX881R EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Do not turn on the power supply until all connec-
tions are completed.
1) Connect a 2.5V to 5.5V supply to the pad labeled
VIN. Connect the ground lead to the pad labeled
GND.
2) Connect a voltmeter and the load to the VOUT pad.
3) Make sure there is no shunt across J U1.
4) Turn on the power and verify that the output is -2V.
You can insert a scope probe into J 1 to observe the
output noise. Be sure the scope ground makes con-
tact with the outside of the connector.
E
MAX 881R Evaluation K it
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
1
19-1372; Rev 1; 6/98
QTY
DESCRIPTION
C1, C2, C3
3
C4
1
J 1
1
Scope-probe connector
Berg Electronics 33J R135-1
2-pin jumper
J U1
R1
R2
R3, R4
U1
None
None
1
0
1
2
1
1
1
Not installed
100k
, 1% resistor
1M
resistors
MAX881RREUB
Shunt
Printed circuit board
4.7μF, 10V, low-ESR ceramic capacitor
Taiyo Yuden LMK316BJ 475ML
1μF, 16V, low-ESR ceramic capacitors
Taiyo Yuden EMK316BJ 105KL
SUPPLIER
PHONE
FAX
Berg Electronics
Sprague
Taiyo Yuden
(317) 738-2800
(603) 224-1961
(408) 573-4150
(317) 738-2858
(603) 224-1430
(408) 573-4159
DESIGNATION
Component List
PART
MAX881REVKIT
-40°C to +85°C
TEMP. RANGE
IC PACKAGE
10 μMAX
Ordering Information
Component S uppliers
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| MAX8879ETG+ | 功能描述:LED照明驅(qū)動(dòng)器 Charge Pump for Back Light/Flash/RGB LEDs RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX8879ETG+T | 功能描述:LED照明驅(qū)動(dòng)器 Charge Pump for Back Light/Flash/RGB LEDs RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX887EVKIT | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Evaluation Kit for the MAX887 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)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(fēng)格:SMD/SMT |
| MAX887HESA | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)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(fēng)格:SMD/SMT |
| MAX887HESA+ | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 100% Duty Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)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(fēng)格:SMD/SMT |
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