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MAX14523A, MAX14523AL, MAX14523B, MAX14523C
250mA to 1.5A, Adjustable Current-Limit Switches
Industry's Highest Accuracy, Adjustable, 1.5A Current-Limit Switch
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Status
| Part Number |
Status |
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MAX14523A
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Active: In Production. |
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MAX14523AL
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Future Product |
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MAX14523B
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Active: In Production. |
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MAX14523C
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Active: In Production. |
Description
The MAX14523A/MAX14523AL/MAX14523B/MAX14523C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These current-limit switches feature a low 70mΩ on-resistance and operate from a +1.7V to +5.5V input voltage range. The current limit is adjustable from 250mA to 1.5A, making these devices ideal for SDIO (secure digital input/output) and other load-switching applications.
Each device in the family handles an overcurrent event differently depending on the option selected. The MAX14523A/MAX14523AL go into an autoretry mode, the MAX14523B latches off the switch, and the MAX14523C features a continuous current-limit mode. Additional safety features include thermal shutdown to prevent overheating and reverse-current blocking to prevent current from being driven back into the source.
The MAX14523A/MAX14523AL/MAX14523B/MAX14523C are available in a tiny 8-pin, 3mm x 3mm, TDFN package and operate over the -40°C to +125°C automotive temperature range.
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Data Sheet
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Key Features
- Accurate (±10%) Overload Current Limit
- Adjustable Current-Limit Threshold
- Low-Dropout Voltage (70mV at 1A Load Current)
- Short-Circuit Protection
- Thermal-Shutdown Protection
- Reverse-Current Protection
- 170µA (typ) Supply Current
- Shutdown Reverse Current, 0.6µA (max)
- +1.7V to +5.5V Supply Voltage Range
- Tiny 8-Pin, 3mm x 3mm, TDFN Package
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Applications/Uses
- Cell Phones
- GPS
- MP3 Players
- Notebook VGA Ports
- SDIO Ports
- USB Ports
- UTCA/ATCA Platforms
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Key Specifications:
| Current Limit and USB Power Switches |
| Part Number |
USB |
Power Switches |
Current Limit
(mA) |
Current Limit
(mA) |
Fault Indicator |
Current Limit Accuracy
(%) |
Current Limit Set By |
Lowest Adj. Setting
(A) |
RON
(Ω) |
VSUPPLY
(V) |
VSUPPLY
(V) |
Oper. Temp.
(°C) |
Package/Pins |
Budgetary Price |
| ≥ |
≤ |
typ |
min |
max |
See Notes |
| MAX14523A |
Yes |
1 |
1500 |
1500 |
Yes |
10 |
Resistor |
0.25 |
0.07 |
1.7 |
5.5 |
-40 to +125 |
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$1.70 @1k |
| MAX14523AL |
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- |
| MAX14523B |
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$1.65 @1k |
| MAX14523C |
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$1.70 @1k |
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See All Current Limit and USB Power Switches (77)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
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Information Index
Document Ref.: 19-4814
Rev 1;
2011-01-10
This page last modified: 2011-01-10
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