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參數(shù)資料
| 型號： | MAX8885EUK33 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 150mA, Low-Dropout Linear Regulator with Power-OK Output |
| 中文描述： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.22 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 8/8頁 |
| 文件大小： | 179K |
| 代理商： | MAX8885EUK33 |
M
150mA, Low-Dropout Linear Regulator
with Power-OK Output
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8
_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
1999 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
PSRR and Operation from Sources
Other than Batteries
The MAX8885 is designed to allow low dropout voltages
and low quiescent currents in battery-powered systems.
Power-supply rejection is 60dB at low frequencies (see
the Power-Supply Rejection Ratio vs. Frequency graph
in the
Typical Operating Characteristics
).
Improve supply-noise rejection and transient response
by increasing the values of the input and output bypass
capacitors. The typical operating characteristics show
the MAX8885
’
s line- and load-transient responses.
Load-Transient Considerations
The MAX8885
’
s load-transient response graphs (see
Typical Operating Characteristics
) show three compo-
nents of the output response. The first (and most signifi-
cant) component is the abrupt drop in output voltage
due to the capacitor
’
s ESR. The magnitude of the voltage
drop is directly proportional to the output capacitor's
ESR and the size of the load transient and is indepen-
dent of the regulator
’
s transient response. The second
component is the output voltage recovery, which is a
function of the regulator
’
s loop response and the capaci-
tance at the output. The third component is a DC shift in
the output voltage resulting from the regulator
’
s finite out-
put impedance. To improve the MAX8885
’
s load-tran-
sient response, increase the output capacitor
’
s value
and decrease its ESR. Take care to ensure that the out-
put capacitor is chosen to comply with the Region of
Stable C
OUT
ESR vs. Load Current graph.
Dropout Voltage
A regulator
’
s minimum input-output voltage differential
(or dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this will deter-
mine the useful end-of-life battery voltage. Because the
MAX8885 uses a P-channel MOSFET pass transistor,
its dropout voltage is a function of drain-to-source on-
resistance (R
DS(ON)
) multiplied by the load current (see
Typical Operating Characteristics
).
V
DROPOUT
= V
IN
- V
OUT
= R
DS(ON)
·
I
OUT
Chip Information
TRANSISTOR COUNT: 266
Package Information
S
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8885EUK33+ | 制造商:Maxim Integrated Products 功能描述:REG LDO LIN FIX POS 3.3V 0.15A 5PIN SOT-23 - Rail/Tube |
| MAX8885EUK33+T | 功能描述:低壓差穩(wěn)壓器 - LDO 150mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8885EUK33-T | 功能描述:低壓差穩(wěn)壓器 - LDO 150mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8885EUK50+ | 制造商:Maxim Integrated Products 功能描述:REG LDO LIN FIX POS 5V 0.15A 5PIN SOT-23 - Rail/Tube |
| MAX8885EUK50+G103 | 制造商:Maxim Integrated Products 功能描述:150MA, LOW-DROPOUT LINEAR REGULATOR WITH POWER OK OUTPUT - Rail/Tube |
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