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參數(shù)資料
| 型號(hào)： | MAX1806EUA |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 3A Fixed Low Dropout Linear Regulator (LDO) |
| 中文描述： | 3A固定低壓差線性穩(wěn)壓器（LDO） |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 263K |
| 代理商： | MAX1806EUA |
M
500mA, Low-Voltage Linear Regulator in μMAX
8
_______________________________________________________________________________________
ing a direct heat conduction path from the die to the PC
board. Connect the exposed backside pad and GND to
the system ground using a large pad or ground plane,
or multiple vias to the ground plane layer.
The MAX1806 delivers up to 0.5A(RMS) and operates
with input voltages up to 5.5V, but not simultaneously.
High output currents can only be sustained when input-
output differential is within the limits outlined.
Applications Information
Capacitor Selection and Regulator
Stability
Connect a 1μF capacitor between IN and ground and a
10μF low equivalent series resistance (ESR) capacitor
between OUT and ground. The input capacitor (C
IN
)
lowers the source impedance of the input supply.
Reduce noise and improve load-transient response,
stability, and power-supply rejection by using larger
output capacitors. The output capacitor
’
s (C
OUT
) ESR
affects stability and output noise. Use output capacitors
with an ESR of 0.1
or less to ensure stability and opti-
mum transient response. Surface-mount ceramic
capacitors have very low ESR and are commonly avail-
able in values up to 10μF. Connect C
IN
and C
OUT
as
close to the MAX1806 as possible.
Noise, PSRR, and Transient Response
The MAX1806 is designed to operate with low dropout
voltages and low quiescent currents, while still main-
taining good noise, transient response, and AC rejec-
tion. See the
Typical Operating Characteristics
for a
plot of Power-Supply Rejection Ratio (PSRR) vs. Freq-
uency. When operating from noisy sources, improved
supply-noise rejection and transient response can be
achieved by increasing the values of the input and
output bypass capacitors and through passive-
filtering techniques. The MAX1806 load-transient
80mV
SHDN
IN
IN
POK
ON
OFF
C
IN
1
μ
F
OUT
OUT
C
OUT
10
μ
F
THERMAL
SENSOR
V
OUT
0.8V TO 3.3V
SET
MOSFET
DRIVER WITH
I
LIM
SHUTDOWN
LOGIC
V
0.8V
V
+2.25V TO +5.5V
ERROR
AMPLIFIER
GND
R
POK
100k
LOGIC SUPPLY
VOLTAGE (V
OUT
)
93% V
REF
TO
μ
C
MAX1806
PRESET MODE
Figure 1. Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1806EUA08 | 功能描述:低壓差穩(wěn)壓器 - LDO 500mA 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX1806EUA08+ | 功能描述:低壓差穩(wěn)壓器 - LDO 500mA 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX1806EUA08+T | 功能描述:低壓差穩(wěn)壓器 - LDO 500mA 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX1806EUA08+TG48 | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX1806EUA08-T | 功能描述:低壓差穩(wěn)壓器 - LDO 500mA 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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