MAX5934, MAX5934A Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity

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The MAX5934/MAX5934A are fully integrated hot-swap controllers for +9V to +80V (MAX5934A) positive supply rails. The MAX5934 is optimized for +33V to +80V power-supply rails. These devices allow for the safe insertion and removal of circuit cards into a live backplane without causing glitches on the backplane power-supply rail. The MAX5934/MAX5934A feature a programmable analog foldback current limit, programmable undervoltage lockout, and programmable output- voltage slew rate through an external n-channel MOSFET. In addition, if these devices remain in current limit for more than a programmable time, the external n-channel MOSFET latches off.

The MAX5934/MAX5934A feature pin-selectable PWRGD_ assertion polarity (active low or active high) and pin-selectable fault management (latched or autoretry). Other features include automatic restart after a circuit-breaker fault, selectable duty-cycle (DC) options, and thermal-shutdown mode for overtemperature protection.

The MAX5934/MAX5934A operate in the extended (-40°C to +85°C) temperature range and are available in a 16-pin QSOP package.

Key Features

Applications/Uses

Provides Safe Hot Swap for +9V to +80V Power Supplies (MAX5934A)
Safe Board Insertion and Removal from a Live Backplane
Pin-Selectable Active-Low or Active-High Power-Good Output
Pin-Selectable Latched or Autoretry Fault Management
Programmable Foldback Current Limiting
High-Side Drive for an External n-Channel MOSFET
Built-In Thermal Shutdown
Undervoltage Lockout (UVLO)
Pin-Selectable Duty-Cycle Options (0.94%, 1.88%, 3.75%)

	24V/48V Industrial/Alarm Systems
	Electronic Circuit Breakers
	Hot Board Insertion
	Industrial High-Side Switch/Circuit Breakers
	Network Routers and 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^**

MAX5934

Yes

Positive

Positive, High-Voltage

Programmable latched off or periodic retry

•	3 Power-Good Outputs for Output U/V, Input O/V, & Gate Voltage Status

•	Adjustable auto-retry duty cycle and Circuit-Breaker Timeout

•	Latch or Auto-Restart Fault Management

•	Output Undervoltage Monitor

•	Power-Good Output Programmable

Yes

QSOP/16

-40 to +85

$1.66 @ 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.