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MAX4795, MAX4796, MAX4797, MAX4798

450mA/500mA Current-Limit Switches

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX4795–MAX4798 family of switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches have a low 0.2Ω on-resistance and operate from a 2.0V to 4.5V input voltage range. They are available with guaranteed 450mA and 500mA current limits, making them ideal for SDIO and other load-switching applications.

When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures the transient voltages settle down. If after this blanking time, the load current is greater than the current limit, the MAX4795 and MAX4797 switches are turned off and active-low FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON input.

The MAX4796 and MAX4798 have an autoretry feature where the switch turns off and issues an active-low FLAG to the microprocessor after the blanking time and then continuously checks to see if the overload condition is present. The switch remains on after the overload condition disappears and active-low FLAG deasserts.

The MAX4795–MAX4798 are available in tiny, space-saving, 5-pin SOT23 and 6-pin TDFN (3mm x 3mm) packages.

Data Sheet

Download	Rev 0	(PDF, 296kB)
E-Mail

Key Features

Guaranteed Current Limit: 450mA and 500mA
Thermal-Shutdown Protection
Reverse-Current Protection
0.2Ω On-Resistance
14ms Guaranteed Blanking Time
Active-Low FLAG Function
Autoretry (MAX4796/MAX4798)
80µA Supply Current
6µA Latchoff Current (MAX4795/MAX4797)
0.01µA Shutdown Current
+2V to +4.5V Supply Range
Fast Current-Limit Response Time
Tiny SOT23 and TDFN Packages
UL Certification Pending

Applications/Uses

Cell Phones
Global Positioning Systems (GPS)
Handheld Devices
PDAs and Palmtop Devices
SDIO

Key Specifications:

Current Limit and USB Power Switches

Part Number

Power Switches

Current Limit
(mA)

Fault Indicator

Current Limit Accuracy
(%)

Current Limit Set By

R_ON
(Ω)

V_SUPPLY
(V)

Oper. Temp.
(°C)

Package/Pins

Budgetary Price

≥

≤

typ

min

max

See Notes

MAX4795

450

Yes

Preset

0.2

4.5

-40 to +85

SOT/5

TDFN-EP/6

$1.08 @1k

MAX4796

450

SOT/5

TDFN-EP/6

$1.08 @1k

MAX4797

500

SOT/5

TDFN-EP/6

$1.08 @1k

MAX4798

500

SOT/5

TDFN-EP/6

$0.80 @1k

See All Current Limit and USB Power Switches (77)

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.

Diagram

Typical Operating Circuit

Product Guides

Signal Routing & Protection (PDF)

Reliability Reports

Show FIT data for:
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Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4795ETT-T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4795EUK+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4795EUK+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4795EUK-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4796ETT-T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4796EUK+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4796EUK-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4797ETT+T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4797ETT-T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4797EUK-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4798ETT+T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4798ETT-T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4798EUK+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4798EUK+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4798EUK+TG05			Active	SOT; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4798EUK-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	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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See All Current Limit and USB Power Switches (78 Products)

More Information

Topmark Coding	MAX4795
Topmark Coding	MAX4796
Topmark Coding	MAX4797
Topmark Coding	MAX4798

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Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2944 Rev 0; 2003-08-13
This page last modified: 2009-12-04

450mA/500mA Current-Limit Switches

Status

Description

Data Sheet

Key Features

Applications/Uses

Key Specifications:

Diagram

Product Guides

Reliability Reports

Software/Models

Ordering Information

Similar Products by Function

More Information

Didn't Find What You Need?

Information Index

Overview

Technical Documents

Ordering Info

Related Products