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MAX1558, MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset
Smallest Dual USB Switches with Up to 1.2A Current per Channel in a 3mm x 3mm TDFN Package
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Status
Active: In Production.
Description
The MAX1558/MAX1558H are dual, current-limited switches with autoreset for USB applications. Autoreset latches the switch off if it is shorted for more than 20ms, saving system power. The shorted output is then tested to determine when the short is removed to automatically restart the channel. Each channel delivers up to 1.2A and meets all IEC specifications for USB ports. Low quiescent supply current (45µA) and standby current (3µA) conserve battery power in portable applications.
The MAX1558/MAX1558H safety features ensure that the USB port is protected. Built-in thermal-overload protection limits power dissipation and junction temperature. Accurate, programmable current-limiting circuitry protects the input supply against both overload and short-circuit conditions. 20ms fault blanking enables the circuit to ignore transient faults, such as those caused when hot swapping a capacitive load, preventing false alarms to the host system. The MAX1558/MAX1558H also feature reverse-current protection circuitry to block current flow from the output to the input when the switches are off.
The MAX1558/MAX1558H are available in space-saving 3mm x 3mm, 10-pin TDFN packages. The MAX1558 is enabled with an active-low signal, and the MAX1558H is enabled with an active-high signal.
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Data Sheet
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Key Features
- 55mΩ Switch Resistance
- Tiny 10-Pin, 3mm x 3mm TDFN Package
- 14% Accurate Current Limit
- Autorestart when Fault is Removed
- Programmable Current Up to 1.2A
- Thermal-Overload Protection
- Built-In 20ms Fault Blanking
- Compliant to All USB Specifications
- 2.7V to 5.5V Supply Range
- Independent-Output Fault Indicators
- Block Reverse Current when Disabled
- 15kV ESD Protection (with Capacitor)
- Underwriters Laboratories (UL) Recognized
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Applications/Uses
- Docking Stations
- Notebook Computers and Desktops
- PDAs and Palmtop Computers
- USB Ports and Hubs
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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 |
| MAX1558 |
Yes |
2 |
1200 |
1200 |
Yes |
15 |
Resistor |
0.5 |
0.055 |
2.7 |
5.5 |
-40 to +85 |
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$1.10 @1k |
| MAX1558H |
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$1.10 @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
Application Notes
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1558ETB+
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Active |
TDFN-EP;10 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0003 (PDF)
Use pkgcode/variation: T1033+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1558ETB+T
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Active |
TDFN-EP;10 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0003 (PDF)
Use pkgcode/variation: T1033+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1558ETB-T
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Active |
TDFN-EP;10 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0003 (PDF)
Use pkgcode/variation: T1033-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1558HETB+T
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Active |
TDFN-EP;10 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0003 (PDF)
Use pkgcode/variation: T1033+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1558HETB-T
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Active |
TDFN-EP;10 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0003 (PDF)
Use pkgcode/variation: T1033-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-3128
Rev 2;
2008-03-11
This page last modified: 2010-03-04
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