MAX5911, MAX5912 -48V, Simple Swapper Hot-Swap Switches

Description

The MAX5911/MAX5912 are fully integrated hot-swap switches for negative supply rails. These devices allow the safe insertion and removal of circuit cards into live backplanes or ports without causing problematic glitches on the negative power-supply rail. They also monitor various circuit parameters and disconnect the load if a fault condition occurs, alerting the host with a logic-level FAULT-bar output. The MAX5911/MAX5912 operate over a voltage range of -16V to -65V and are designed to permit hot plugging of an IP phone into a hub, but are not limited to that operation.

During startup, an internal power FET regulates the current between the backplane power source and the load to 280mA for MAX5911 and 415mA for MAX5912. After startup, the FET is fully enhanced to reduce its on-resistance. To ensure robust operation, the MAX5911/MAX5912 contain built-in safety features that prevent damage to the internal FET. They include an enable input, which responds to positive logic signals (+3.3V or +5V), allowing the host system to disconnect the load. ENABLE is also used to reset the device after a latching fault condition occurs.

The MAX5911/MAX5912 Simple Swapper™ hot-swap ICs monitor four parameters for these fault conditions: undervoltage lockout (UVLO), power-not-good, zero-current detection, and thermal shutdown. These devices are available in the extended temperature range, -40°C to +85°C. The MAX5911 and MAX5912 come in 8-pin and 16-pin SOIC packages, respectively.

Key Features

Applications/Uses

Provides Safe Hot Swap for -16V to -65V Power Supplies
280mA Current Limit for MAX5911
415mA Current Limit for MAX5912
Zero-Current Load Disconnect
Integrated Power FET
Status Output Reports Fault Condition
Internal Switch-Protection Circuitry
Built-In Thermal Shutdown
DGND Can Vary Up to ±5V with Respect to AGND

	Bridges
	Network Hubs, Switches, Routers
	Routers/Switches

Key Specifications: Hot Swap Controllers

Part Number

Min. V_IN (V)

Max. V_IN (V)

Low Voltage

High Voltage

Voltage Polarity

Type

Fault Condition Control

Number of Channels

Features

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX5911

-16

-65

Yes

Negative

Negative, High-Voltage

Latched Off

•	Fault Status Output

•	On/Off Control

•	Open-Circuit Detection

•	Regulated Internal Switch, In-Rush Current and Short-Circuit Protection

•	Thermal Shutdown

Yes

SOIC/8

-40 to +85

$1.93 @ 1k

MAX5912

SOIC/16

$2.19 @ 1k

See All Hot Swap Controllers (44)

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.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part 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.

Devices: 1-8 of 8

MAX5911

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5911ESA

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-5*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5911ESA-T

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-5*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5911ESA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+5*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5911ESA+T

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+5*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5912

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5912ESE

SOIC;16 pin;62 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S16-9F*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5912ESE-T

-40°C to +85°C

See data sheet

MAX5912ESE+

SOIC;16 pin;62 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S16+9F*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5912ESE+T

SOIC;16 pin;62 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S16+9F*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis