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參數(shù)資料
| 型號(hào)： | MAX8532 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Noise, Low-Dropout, 200mA Linear Regulator in UCSP |
| 中文描述： | 低噪聲、低壓差、200mA線性穩(wěn)壓器，UCSP封裝 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 280K |
| 代理商： | MAX8532 |
M
Low-Noise, Low-Dropout,
200mA Linear Regulator in UCSP
_______________________________________________________________________________________
5
Detailed Description
The MAX8532 is a low-power, low-dropout, low-quies-
cent current linear regulator designed primarily for bat-
tery-powered applications. For preset output voltages,
see the
Output Voltage Selector Guide
. The device
supplies up to 200mA for OUT. The MAX8532 consists
of a 1.25V reference, error amplifier, P-channel pass
transistor, reference bypass block, and internal feed-
back voltage divider.
The 1.25V bandgap reference is connected to the error
amplifier
’
s inverting input. The error amplifier compares
this reference with the feedback voltage and amplifies
the difference. If the feedback voltage is lower than the
reference voltage, the pass-transistor gate is pulled
lower, allowing more current to pass to the output and
increasing the output voltage. If the feedback voltage is
high, the pass-transistor gate is pulled up, allowing less
current to pass to the output. The output voltage is fed
back through an internal resistor voltage-divider con-
nected to the OUT pin.
Shutdown
The MAX8532 has a single shutdown control input
(
SHDN
). Drive
SHDN
low to shut down the output,
reducing supply current to 10nA. Connect
SHDN
to a
logic-high, or IN, for normal operation.
Internal P-Channel Pass Transistor
The MAX8532 features a 1
P-channel MOSFET pass
transistor. A P-channel MOSFET provides several advan-
tages over similar designs using PNP pass transistors,
including longer battery life. It requires no base drive,
reducing quiescent current. PNP-based regulators waste
considerable current in dropout when the pass transistor
saturates and also use high base-drive currents under
heavy loads. The MAX8532 does not suffer these prob-
lems and consumes only 90μA quiecent current whether
in dropout, light-load, or heavy-load applications (see the
Typical Operating Characteristics
). Whereas a PNP-
based regulator has dropout voltage independent of the
load, a P-channel MOSFET
’
s dropout voltage is propor-
tional to load current, providing for low dropout voltage
at heavy loads and extremely low dropout voltage at
lighter loads.
ERROR
AMP
IN
SHDN
GND
OUT
BP
MOS
DRIVER
WITH I
LIMIT
THERMAL
SENSOR
1.25V
REF
SHUTDOWN
AND
POWER-ON
CONTROL
MAX8532
Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX8532EBTG | Low-Noise, Low-Dropout, 200mA Linear Regulator in UCSP |
| MAX8535AEUA | ORing MOSFET Controllers with Fastest Fault Isolation for Redundant Power Supplies |
| MAX8535 | Triple 3-Input Positive-AND Gates 20-LCCC -55 to 125 |
| MAX8536EUA | Triple 3-Input Positive-AND Gates 14-CDIP -55 to 125 |
| MAX8535EUA | PLUG, JAM NUT, PANEL, 6WAY RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8532EBT2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8532EBT2+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8532EBT2+T | 功能描述:低壓差穩(wěn)壓器 - LDO 200mA 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(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 |
| MAX8532EBT2-T | 功能描述:低壓差穩(wěn)壓器 - LDO 200mA 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(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 |
| MAX8532EBTG | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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