MAX5936ACESA+ Maxim Integrated Products, MAX5936ACESA+ Datasheet

IC HOT-SWAP CTRLR -48V 8-SOIC

MAX5936ACESA+

Manufacturer Part Number
MAX5936ACESA+
Description
IC HOT-SWAP CTRLR -48V 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Hot-Swap Controllerr
Datasheet

Specifications of MAX5936ACESA+

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
-10 V ~ -80 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
Lead free / RoHS Compliant
19-3281; Rev 1; 1/05
The MAX5936/MAX5937 are hot-swap controllers for
-10V to -80V rails. The MAX5936/MAX5937 allow circuit
line cards to be safely hot-plugged into a live back-
plane without causing a glitch on the power supply.
These devices integrate a circuit-breaker function
requiring no R
The MAX5936/MAX5937 provide a controlled turn-on
for circuit cards, limiting inrush, preventing glitches on
the power-supply rail, and preventing damage to board
connectors and components. Before startup, the
devices perform a Load Probe™ test to detect the
presence of a short-circuit condition. If a short-circuit
condition does not exist, the device limits the inrush
current drawn by the load by gradually turning on the
external MOSFET. Once the external MOSFET is fully
enhanced, the MAX5936/MAX5937 provides overcur-
rent and short-circuit protection by monitoring the volt-
age drop across the R
MOSFET. The MAX5936/MAX5937 integrate a 400mA
fast GATE pulldown to guarantee that the power
MOSFET is rapidly turned off in the event of an overcur-
rent or short-circuit condition.
The MAX5936/MAX5937 protect the system against
input voltage (V
ty. The MAX5936/MAX5937 provide an accurate UVLO
voltage. The MAX5936 has an open-drain, active-low
PGOOD output and the MAX5937 has an open-drain,
active-high PGOOD output.
The MAX5936/MAX5937 are offered with 100mV,
200mV, and 400mV circuit-breaker thresholds, in addi-
tion to a non-circuit-breaker option. These devices are
offered in latched and autoretry fault management, are
available in 8-pin SO packages, and specified for the
extended (-40°C to +85°C) temperature range (see the
Selector Guide).
Load Probe is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Servers
Telecom Line Cards
Network Switches
Solid-State Circuit Breaker
Network Routers
SENSE
IN
________________________________________________________________ Maxim Integrated Products
) steps by providing V
.
General Description
DS(ON)
-48V Hot-Swap Controllers with V
of the external power
Applications
IN
step immuni-
Step Immunity and No R
♦ -10V to -80V Operation
♦ No R
♦ Drives Large Power MOSFETS
♦ Programmable Inrush Current Limit During Hot
♦ 100mV, 200mV, 400mV, and No-Circuit-Breaker
♦ Circuit-Breaker Fault with Transient Rejection
♦ Shorted Load Detection (Load Probe) Before
♦ ±2.4% Accurate Undervoltage Lockout (UVLO)
♦ Autoretry and Latched Fault Management
♦ Low Quiescent Current
Note: The first “_” represents A for the autoretry and L for the
latched fault management option.
The second “_” represents the circuit-breaker threshold.
See the Selector Guide for additional information.
Selector Guide and Typical Operating Circuit appear at end
of data sheet.
MAX5936_ _ESA
MAX5937_ _ESA
Plug
Threshold Options
Power MOSFET Turn-On
Available
PART
TOP VIEW
( ) FOR THE MAX5937.
SENSE
STEP_MON
Required
UVLO
GND
V
EE
1
2
4
3
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
MAX5936
MAX5937
SO
Pin Configuration
8
7
6
5
PGOOD
(PGOOD)
V
GATE
LP
OUT
PIN-PACKAGE
8 SO
8 SO
SENSE
Features
IN
1

Related parts for MAX5936ACESA+

MAX5936ACESA+ Summary of contents

Page 1

... Telecom Line Cards Network Switches Solid-State Circuit Breaker Network Routers Load Probe is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Step Immunity and No R ♦ ...

Page 2

Hot-Swap Controllers with V Step Immunity and No R ABSOLUTE MAXIMUM RATINGS PGOOD (PGOOD), LP, EE OUT STEP_MON to GND............................................+0.3V to -85V PGOOD (PGOOD ....................................-0.3V to +85V OUT PGOOD (PGOOD), LP, STEP_MON to ...

Page 3

Hot-Swap Controllers with V ELECTRICAL CHARACTERISTICS (continued -10V to -80V GND - Typical values are -48V +25°C.) (Notes PARAMETER Circuit-Breaker ...

Page 4

Hot-Swap Controllers with V Step Immunity and No R ELECTRICAL CHARACTERISTICS (continued -10V to -80V GND - Typical values are -48V +25°C.) (Notes 1, ...

Page 5

Hot-Swap Controllers with -48V, GND = 0V GND - SUPPLY CURRENT vs. INPUT VOLTAGE 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 ...

Page 6

Hot-Swap Controllers with V Step Immunity and -48V, GND = 0V GND - MAX5936_A SHORT-CIRCUIT EVENT MAX5936 toc08 V GATE 10V/div V OUT 50V/div V PGOOD 50V/div I IN ...

Page 7

Hot-Swap Controllers with V PIN NAME MAX5936 MAX5937 1 1 GND 2 2 UVLO 3 3 STEP_MON GATE OUT PGOOD 8 — — 8 PGOOD Detailed Description ...

Page 8

Hot-Swap Controllers with V Step Immunity and No R GND GND MAX5936 MAX5937 10V REG AND 5V REG BANDGAP REF UVLO UVLO LOGIC CONTROL 10µA STEP_MON Figure 1. Functional Block Diagram The MAX5936/MAX5937 ...

Page 9

Hot-Swap Controllers with 100µF IN 4ms/div Figure 2. GATE Voltage Clamp During Power- normal power-up GATE cycle, the voltage at V (referenced ramps to below 72% of the circuit- EE breaker ...

Page 10

Hot-Swap Controllers with V Step Immunity and No R The V step immunity provides a means for transition- IN ing through a large step increase in V backplane inrush current and without shutting down the load. Without V step ...

Page 11

Hot-Swap Controllers with V Latched Fault Management (MAX5936L_/MAX5937L_) When the MAX5936L_/MAX5937L_ enter fault manage- ment, they remain in this condition indefinitely until the power is recycled or until UVLO is brought below 1.125V for 1.5ms (typ) (when the short-circuit ...

Page 12

Hot-Swap Controllers with V Step Immunity and No R NORMALIZED MOSFET ON-RESISTANCE vs. TEMPERATURE 1.6 1.4 1.2 1.0 MAX5936/MAX5937 NORMALIZED V 0.8 IRFR3910 NORMALIZED R 0.6 IRF1310NS NORMALIZED R ON 0.4 -40 - TEMPERATURE (°C) Figure 9. ...

Page 13

Hot-Swap Controllers with V This startup delay is from a valid UVLO condition until the start of the load-probe test. There is glitch rejection on UVLO going low, which requires that V below its falling threshold for 1.5ms to ...

Page 14

Hot-Swap Controllers with V Step Immunity and No R This occurs with the least possible disturbance to V although during the brief period that the MOSFET is off, the voltage across the load droops slightly depending on the load ...

Page 15

Hot-Swap Controllers with V The margin of V with respect to V OUT when V and V were selected from the three avail able ranges. This margin may be lower at one of the tem- perature extremes ...

Page 16

Hot-Swap Controllers with V Step Immunity and No R GND Figure 14. Load Probe Functional Diagram Adjusting the V The default slew rate is set internally for 9V/ms. The slew rate can be reduced ...

Page 17

Hot-Swap Controllers with V SLEW RATE vs. C SLEW 10 1 0.1 0.01 0 (nF) SLEW Figure 15. MAX5936/MAX5937 Slew Rate vs. C GND GND MAX5936 MAX5937 V OUT V GATE EE C SLEW R GATE ...

Page 18

Hot-Swap Controllers with V Step Immunity and No R BACKPLANE PLUG-IN CARD 48V ±10% 68V 1µF 0.1µF TVS Figure 17. Protecting the MAX5936/MAX5937 Input from High- Voltage Transients Power-Up to Fault Management: 1) Same as step 1 above. [GATE ...

Page 19

Hot-Swap Controllers with V GATE is a complex output structure and its condition at any moment is dependent on various timing sequences in response to multiple inputs. A diode to V ative excursions. For positive excursions, the states are: ...

Page 20

Hot-Swap Controllers with V Step Immunity and No R Verification of the Step It is prudent to verify conclusively that all circuit-breaker and short-circuit faults will be blocked for all ramp rates this, some form of graphical ...

Page 21

Hot-Swap Controllers with V V RESPONSE TO V RAMP OF 300V/ms OUT IN 2.7 2.4 2.1 1.8 1.5 1.2 0 STEP 0 TIME (µs) A ...

Page 22

Hot-Swap Controllers with V Step Immunity and No R NAME SYMBOL Power-Up Delay Load Probe Test Timeout Load Probe Retry Time PGOOD (PGOOD) Assertion Delay Time Autoretry Delay Circuit-Breaker Glitch Rejection UVLO Glitch Rejection GATE Pulldown Pulse Following a ...

Page 23

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 23 © 2005 Maxim Integrated Products ...

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