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參數(shù)資料
| 型號： | MAX8890 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Integrated Cellular RF-Section Power-Management IC |
| 中文描述： | 集成的蜂窩電話RF部分電源管理IC |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 233K |
| 代理商： | MAX8890 |
M
Integrated Cellular RF-S ec tion
Power-Management IC
8
_______________________________________________________________________________________
IN1
EN1
IN2
EN2
IN3
EN3
OUT1
BP
GND
OUT2
OUT3
LINEAR REGULATOR #1
LINEAR REGULATOR #2
LINEAR REGULATOR #3
STARTUP
CIRCUITRY
CONTROL
LOCIC
REF
1.25V
THERMAL
SHDN
IN1
ERROR
AMPLIFIER
CURRENT
LIMIT
R
SENSE
Figure 2. Functional Diagram
Enable
If any one of the three low-dropout linear regulators
(LDOs) is enabled, the internal 1.25V reference powers
up. Therefore, all three LDOs must be disabled to shut
down the internal reference, reducing the supply cur-
rent to 0.01μA.
Pull EN_ low to enter shutdown. When any one of the
linear regulators is shutdown, the corresponding
MAX8890 output disconnects from the corresponding
input, and the output discharges through an internal
5k
resistor. The capacitance and load determine the
rate at which V
OUT
_ decays. Do not leave EN_ floating.
Connect EN_ to IN_ for normal operation. EN_ can be
pulled as high as 6V, regardless of the input and output
voltages.
T hermal-Overload Protec tion
Thermal-overload protection limits the MAX8890
’
s total
power dissipation in the event of fault conditions. Each
linear regulator has its own thermal-shutdown circuitry.
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相關代理商/技術參數(shù) |
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| MAX8890EGCAAA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCABK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCAKM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCBBB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCBKK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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