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參數資料
| 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穩壓器 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 228K |
| 代理商： | MAX8557 |
General Desc ription
The MAX8556/MAX8557 low-dropout linear regulators
operate from input voltages as low as 1.425V and are
able to deliver up to 4A of continuous output current
with a typical dropout voltage of only 100mV. The out-
put voltage is adjustable from 0.5V to V
IN
- 0.2V.
Designed with an internal p-channel MOSFET pass tran-
sistor, the MAX8556/MAX8557 maintain a low 800μA typi-
cal supply current, independent of the load current and
dropout voltage. Using a p-channel MOSFET eliminates
the need for an additional external supply or a noisy inter-
nal charge pump. Other features include a logic-con-
trolled shutdown mode, built-in soft-start, short-circuit
protection with foldback current limit, and thermal-over-
load protection. The MAX8556 features a POK output that
transitions high when the regulator output is within ±10%
of its nominal output voltage. The MAX8557 offers a
power-on reset output that transitions high 140ms after the
output has achieved 90% of its nominal output voltage.
The MAX8556/MAX8557 are available in a 16-pin thin
QFN 5mm x 5mm package with exposed paddle.
Applic ations
Servers and Storage Devices
Networking
Base Stations
Optical Modules
Point-of-Load Supplies
ATE
Features
1.425V to 3.6V Input Voltage Range
Guaranteed 4A Output Current
±1% Output Accuracy Over Load/Line/
Temperature
100mV Dropout at 4A Load (typ)
Built-In Soft-Start
800μA (typ) Operating Supply Current
150μA (max) Shutdown Supply Current
Short-Circuit Current Foldback Protection
Thermal-Overload Protection
±10% Power-OK (MAX8556)
140ms Power-On Reset Output (MAX8557)
Fast Transient Response
16-Pin Thin QFN 5mm x 5mm Package
M
4A Ultra-Low-Input-Voltage
LDO Regulators
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
16
15
14
13
9
10
11
12
OUT
OUT
OUT
POK (POR)
TOP VIEW
4
3
2
1
IN
IN
IN
IN
5
6
7
8
I
I
O
O
MAX8556
(MAX8557)
E
N
G
F
THIN QFN
5mm x 5mm
Pin Configuration
Ordering Information
IN
EN
GND
OUT
FB
N.C.
POK
(POR)
V
IN
1.425V TO3.6V
V
OUT
0.5V TOV
IN
- 0.2V
MAX8556
(MAX8557)
Typic al Operating Circ uit
19-3257; Rev 0; 4/04
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
16 Thin QFN
5mm X 5mm
16 Thin QFN
5mm X 5mm
FEATURE
MAX8556
ETE
-40°C to +85°C
POK
MAX8557
ETE
-40°C to +85°C
POR
相關PDF資料 |
PDF描述 |
|---|---|
| MAX8557ETE | 3-Line To 8-Line Decoders/Demultiplexers 16-CDIP -55 to 125 |
| MAX8561ETA | 22 AWG BLACK PVC UL1007 |
| MAX8574EUT-T | Hex Schmitt-trigger Inverters 14-CFP -55 to 125 |
| MAX8570 | High-Efficiency LCD Boost with True Shutdown |
| MAX8570-MAX8575 | High-Efficiency LCD Boost with True Shutdown |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX8557ETE | 功能描述:低壓差穩壓器 - 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 負載調節:0.3 % 輸出端數量: 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 負載調節:0.3 % 輸出端數量: 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 負載調節:0.3 % 輸出端數量: 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 負載調節:0.3 % 輸出端數量: 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 負載調節:0.3 % 輸出端數量: 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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