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參數(shù)資料
| 型號： | MAX8557 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3-Line To 8-Line Decoders/Demultiplexers 16-CFP -55 to 125 |
| 中文描述： | 4A、超低輸入電壓LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大?。?/td> | 228K |
| 代理商： | MAX8557 |
M
4A Ultra-Low-Input-Voltage
LDO Regulators
6
_______________________________________________________________________________________
Pin Desc ription
PIN
1–6
NAME
IN
FUNCTION
LDO Input. Connect to a 1.425V to 3.6V input voltage. Bypass with a 22μF ceramic capacitor to GND.
7–11
OUT
LDO Output. Bypass with 2 x 10μF ceramic capacitors to GND. A smaller capacitance can be used if
the maximum load current is less than 4A.
POK
(MAX8556)
Power-OK Output. Open-drain output that pulls low when V
OUT
is outside ±10% of the expected
regulation voltage or when EN is low. POK is high impedance when V
OUT
is within ±10% of the
nominal output voltage. Connect a resistor from POK to a logic supply of less than 3.6V.
12
POR
(MAX8557)
Power-On Reset. Open-drain output goes high impedance 140ms after the output is above 90% of its
nominal regulation voltage. POR pulls low immediately after an output fault or when EN is low.
Connect a resistor from POR to a logic supply of less than 3.6V.
13
FB
Feedback Input. V
FB
is regulated to 0.5V. Connect to the center tap of a resistor-divider from output
to GND to set the desired output voltage.
14
15
GND
N.C.
Ground
Connect to GND or Floating
16
EN
Enable Input. Connect to GND or a logic low to shut down the device. Connect to IN or a logic high
for normal operation.
EP
—
Exposed Paddle. Connect to GND and to a ground plane for heatsinking.
P
MAX8556
(MAX8557)
THERMAL-
OVERLOAD
PROTECTION
REF
SHUTDOWN
LOGIC
ERROR
AMP
CURRENT-
LIMIT
COMPARATOR
THRESHOLD
EN
GND
IN
0.50V
OUT
FB
POK
(POR)
0.45V
0.55V
UNDERVOLTAGE
LOCKOUT
POK (POR)
CIRCUITRY
N
Bloc k Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8557ETE | 功能描述:低壓差穩(wěn)壓器 - LDO 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8557ETE+ | 功能描述:低壓差穩(wěn)壓器 - LDO 4A Ultra-Low-Input-V LDO 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8557ETE+T | 功能描述:低壓差穩(wěn)壓器 - LDO 4A Ultra-Low-Input-V LDO 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8557ETE-T | 功能描述:低壓差穩(wěn)壓器 - LDO 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX8559EBA11+T | 功能描述:低壓差穩(wěn)壓器 - LDO Dual 300mA Low-Noise 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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