MAX5911ESA Maxim Integrated Products, MAX5911ESA Datasheet

IC SW HOTSWAP -48V SWAPPER 8SOIC

MAX5911ESA

Manufacturer Part Number
MAX5911ESA
Description
IC SW HOTSWAP -48V SWAPPER 8SOIC
Manufacturer
Maxim Integrated Products
Series
Simple Swapper™r
Type
Hot-Swap Switchr
Datasheet
1.MAX5911ESA.pdf (8 pages)

Specifications of MAX5911ESA

Applications
IP Phones, Power over LAN, Network Routers and Switches
Internal Switch(s)
Yes
Current Limit
280mA
Voltage - Supply
-16 V ~ -65 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MAX5911ESA
Manufacturer:
MAXIM
Quantity:
365
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
MAX5911ESA
Manufacturer:
MAXIM/美信
Quantity:
20 000
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 glitch-
es 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 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 limit-
ed to that operation.
During startup, an internal power FET regulates the cur-
rent 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-resis-
tance. 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.
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
19-1832; Rev 0a; 1/01
IP Phones
Network Routers
Network Switches
AGND
POSITIVE
+3.3V
LOGIC
V
IN
(-48V)
-48V Simple Swapper Hot-Swap Switches
Typical Operating Circuit
DGND
________________________________________________________________ Maxim Integrated Products
3.3kΩ
0.1µF
General Description
V
UVLO
FAULT
ENABLE
DGND
AGND
IN
MAX5911
MAX5912
Internet Appliances
Power-Over-LAN
Applications
V
OUT
LOAD
o Provides Safe Hot Swap for -16V to -65V Power
o 280mA Current Limit for MAX5911
o 415mA Current Limit for MAX5912
o Zero-Current Load Disconnect
o Integrated Power FET
o Status Output Reports Fault Condition
o Internal Switch-Protection Circuitry
o Built-In Thermal Shutdown
o DGND Can Vary Up to ±5V with Respect to AGND
Simple Swapper is a trademark of Maxim Integrated Products, Inc.
Supplies
MAX5911ESA
MAX5912ESE
PART
TOP VIEW
*THESE PINS ARE NOT INTERNALLY CONNECTED.
FAULT
FAULT
DGND
DGND
GATE
N.C.*
N.C.*
GATE
N.C.*
V
V
V
IN
IN
IN
1
2
4
1
2
3
4
5
6
7
8
3
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
MAX5911
MAX5912
16 SO
Pin Configurations
8 SO
16
15
14
13
12
11
10
6
8
7
5
9
UVLO
V
AGND
ENABLE
N.C.*
UVLO
V
V
V
AGND
ENABLE
N.C.*
OUT
OUT
IN
IN
PIN-PACKAGE
8 SO
16 SO
Features
1

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MAX5911ESA Summary of contents

Page 1

... Current Limit for MAX5912 o Zero-Current Load Disconnect o Integrated Power FET o Status Output Reports Fault Condition o Internal Switch-Protection Circuitry o Built-In Thermal Shutdown o DGND Can Vary Up to ±5V with Respect to AGND PART MAX5911ESA MAX5912ESE Simple Swapper is a trademark of Maxim Integrated Products, Inc. Applications V OUT LOAD Features Ordering Information TEMP ...

Page 2

Simple Swapper Hot-Swap Switches ABSOLUTE MAXIMUM RATINGS Voltages are with respect to AGND, unless otherwise noted. V ..........................................................................+0.3V to -70V IN V ............................................................+0. OUT ENABLE to DGND ..................................................-0.3V to +11V ENABLE to V .......................................................-0.3V to +70V IN ...

Page 3

Simple Swapper Hot-Swap Switches ELECTRICAL SPECIFICATIONS (continued -48V, AGND = DGND = 0, UVLO = open circuit values are +25°C.) A PARAMETER SYMBOL Power-Not-Good Output Delay PG (Note 4) Thermal Shutdown Temperature ...

Page 4

Simple Swapper Hot-Swap Switches (V = -48V, AGND = DGND = 0, UVLO = open circuit MAX5911 TURN-ON WAVEFORMS (R = 1.8kΩ NONE MAX5911 toc04 ...

Page 5

Simple Swapper Hot-Swap Switches (V = -48V, AGND = DGND = 0, UVLO = open circuit MAX5912 TURN-OFF WAVEFORMS (R = 1.8kΩ 47µ MAX5911 toc13 ...

Page 6

Simple Swapper Hot-Swap Switches MAX5911/MAX5912 LEVEL ENABLE SHIFTER CONTROL AGND LOGIC 2.11MΩ UVLO 99.5kΩ +1.258V REF (min OUT V (typ ...

Page 7

Simple Swapper Hot-Swap Switches V (-16V TO -65V 0.1µF R1 +3.3V UVLO R2 MAX5911 3.3kΩ MAX5912 FAULT POSITIVE ENABLE LOGIC DGND AGND CHOOSE R1 10kΩ, THEN CALCULATE R2 USING Figure 2. UVLO Voltage ...

Page 8

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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