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MAX869L
2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown
Low-Resistance P-Channel Switches with Adjustable, Accurate Current Limit Protects Systems and USB
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Status
Active: In Production.
Description
The MAX869L P-channel load switch features an accurate user-set current limit and low on-resistance. This switch is designed to protect your power source from shorts and surges by limiting current and preventing the system supply from being pulled low. The input voltage range is 2.7V to 5.5V.
The MAX869L features a 2A, 45mΩ switch controlled by a logic signal. Current-limit accuracy is ±21%, and can be set from 400mA to 2.4A using a single resistor.
The device has a low 12µA quiescent supply current, which reduces to 2µA max in shutdown. It features thermal-shutdown protection and a logic-signal output pin (active-low FAULT) that signals when there is an overcurrent or overtemperature condition.
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Data Sheet
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Key Features
- Very Small Footprint (16-pin QSOP is the same size as an 8-pin SO)
- Low Resistance: 45mΩ at 3V
- ±21%-Accurate, User-Set Current Limit
- 12µA (typ) Quiescent Current
- 0.01µA (typ) Shutdown Current
- 0.04µA (typ) Leakage to Output when Switch is Off
- 2.7V to 5.5V Input Range
- Thermal Shutdown
- Active-Low FAULT Output
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Applications/Uses
- Handheld Instruments (PDAs, Palmtops)
- Notebook Computers
- Palmtop Computers
- Personal Communicators
- Portable Medical Instrumentation
- Universal Serial Bus (USB)
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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 |
| MAX869L |
Yes |
1 |
2000 |
2000 |
Yes |
15 |
Resistor |
0.4 |
0.038 |
2.7 |
5.5 |
-40 to +85 |
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$2.15 @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
Notes and Comments
45mΩ/2A switch
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Information Index
Document Ref.: 19-1278
Rev 0;
1997-08-01
This page last modified: 2010-01-21
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