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MAX5950ETJ+

Description
hot swap voltage controllers 12v pwm controller w/hot-swap
CategoryPower/power management    The power supply circuit   
File Size551KB,28 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

MAX5950ETJ+ Overview

hot swap voltage controllers 12v pwm controller w/hot-swap

MAX5950ETJ+ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeQFN
package instructionHVQCCN, LCC32,.2SQ,20
Contacts32
Reach Compliance Codecompli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage16 V
Minimum input voltage8 V
Nominal input voltage12 V
JESD-30 codeS-XQCC-N32
JESD-609 codee3
length5 mm
Humidity sensitivity level1
Number of functions1
Number of terminals32
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current2 A
Package body materialUNSPECIFIED
encapsulated codeHVQCCN
Encapsulate equivalent codeLCC32,.2SQ,20
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
power supply5/12 V
Certification statusNot Qualified
Maximum seat height0.8 mm
Maximum supply current (Isup)3.7 mA
surface mountYES
Switch configurationPHASE-SHIFT
Maximum switching frequency1000 kHz
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width5 mm
19-0545; Rev 0; 6/06
KIT
ATION
EVALU
E
BL
AVAILA
12V PWM Controller with Hot-Swap
General Description
Features
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
8V to 16V or 5V ±10% Input-Voltage Range
Integrated Hot-Swap Controller
Lossless Valley-Mode Current Sensing
Output Voltage Adjustable from 0.8V to 5.5V
Voltage-Mode Control
External Compensation for Maximum Flexibility
Digital Soft-Start
Sequencing or Ratiometric Tracking
Startup Synchronization
Programmable PGOOD Output
Programmable Switching Frequency from 100kHz
to 1MHz
External Frequency Synchronization
SYNCIN and SYNCOUT Enable 180° Out-of-Phase
Operation
Thermal Shutdown and Short-Circuit Protection
Space-Saving 5mm x 5mm, 32-Pin TQFN Package
MAX5950
The MAX5950 is a 12V pulse-width modulated (PWM),
step-down, DC-DC controller with integrated hot-swap
controller. The device operates over the 8V to 16V input-
voltage range or 5V ±10% and provides an adjustable
output from 0.8V to 5.5V. The device delivers up to 10A
of load current with excellent load-and-line regulation.
The MAX5950 is optimized for PCIe
®
ExpressModule™
power-management application.
The MAX5950 features a hot-swap controller that pro-
vides inrush current control during module insertion
and removal, as well as short-circuit protection during
normal operation. The MAX5950 features an internal
charge pump that provides the gate drive for an exter-
nal n-channel MOSFET. A DCENO logic output indi-
cates the completion of the inrush cycle.
The MAX5950 PWM section utilizes a voltage-mode con-
trol scheme for good noise immunity and offers external
compensation, allowing for maximum flexibility with a
wide selection of inductor values and capacitor types.
The device operates at a fixed switching frequency that
is programmable from 100kHz to 1MHz and can be syn-
chronized to an external clock signal through the
SYNCIN input. The device includes undervoltage lockout
(UVLO) and digital soft-start. Protection features include
lossless valley-mode current limit, hiccup-mode output
short-circuit protection, and thermal shutdown.
The MAX5950 is available in a space-saving 5mm x
5mm, 32-pin thin QFN package and is specified for
operation over the -40°C to +85°C extended tempera-
ture range. Refer to the MAX5951 data sheet for a pin-
compatible, general-purpose PWM controller.
Ordering Information
PART
MAX5950ETJ+
TEMP RANGE
-40°C to +85°C
PIN-
PACKAGE
32 TQFN-EP*
PKG
CODE
T3255-4
+Denotes
lead-free package.
*EP
= Exposed pad.
Applications
SENSE
ILIM
CS+
FB
Pin Configuration
TOP VIEW
STARTUP
18
PGOOD
COMP
RT
17
16
15
14
13
SYNCIN
SYNCOUT
AGND
THRESH
DCENI
DCENO
PGI
MPWRGD
12
11
10
9
1
PWM_IN
2
PUVLO
3
HSENSE
4
GATE
5
IN
6
HUVLO
7
PWREN
8
PWRFLT
PCIe ExpressModule
General 12V-Input PWM Controllers with
Hot-Swap
Blade Servers
RAID
Base Stations
Work Stations
24
CS- 25
PGND 26
DL 27
DREG 28
LX 29
DH 30
BST 31
REG 32
23
22
21
20
19
MAX5950
+
PCIe is a registered trademark and ExpressModule is a
trademark of PCI-SIG Corp.
TQFN
(5mm x 5mm)
________________________________________________________________
Maxim Integrated Products
1
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.
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