172946001 Module Datasheet

172946001 Datasheet PDF, Equivalent


Part Number

172946001

Description

LED Step Down High Current Module

Manufacture

Wurth

Total Page 30 Pages
PDF Download
Download 172946001 Datasheet PDF


172946001
WLMDU9456001JT / 172946001
MagI3C Power Module
LDHM - LED Step Down High Current Module
4.5 - 60V / 450mA / 4.5 - 60V Output
DESCRIPTION
The LDHM type of the MagI³C Power Module family
provides a fully integrated constant current LED driver
including the buck switching regulator and inductor in a
package.
The 172946001 offers high efficiency and delivers up to
450mA of LED current. It operates from 4.5V input
voltage up to 60V and supports up to 16 LEDs in series. It
is designed for fast PWM dimming for no color shift.
It is available in an innovative industrial high power
density TO263-7EP (10.16 x 13.77 x 4.57mm) package
that enhances thermal performance and allows for hand
or machine soldering.
The LDHM regulator has an on-board protection circuitry
to guard against thermal overstress and electrical
damage featuring thermal shut-down, input under-voltage
lockout and LED short-circuit protections.
TYPICAL APPLICATIONS
ƒ Indoor lighting: Spot light, down light
ƒ Outdoor lighting: Street light, security light, tunnel
light
ƒ Outdoor lighting: High-bay light, low-bay light
FEATURES
ƒ Peak efficiency up to 95%
ƒ Default LED current: 350mA
ƒ Adjustable LED current up to 450mA
ƒ Current sharing in parallel operation for higher
output current
ƒ Wide input voltage range: 4.5V to 60V
ƒ Output voltage range: 4.5V to 60V
ƒ Maximum output power: 27W
ƒ PWM dimming / Analog dimming
ƒ Integrated shielded inductor
ƒ Single exposed pad for best-in-class thermal
performance
ƒ Typical LED Current Accuracy ±3.5 %
ƒ LED short circuit protections
ƒ Under voltage lockout Protection (UVLO)
ƒ Fixed switching frequency at 800kHz
ƒ Compatible with ceramic and Low ESR Capacitors
ƒ Operating ambient temp. range up to 85°C
ƒ Operating junction temp. range: -40 to 125°C
ƒ RoHS & REACH compliant
ƒ Mold compound UL 94 Class V0 (flammability
testing) certified
ƒ Complies with EN 55015 radiated emissions
standard
TYPICAL CIRCUIT DIAGRAM
We-online.com
© May 2016
VIN
CIN
High Power LED String
COUT
1 LED+
LED- 7
2 LED+ Module
IFIX 6
3 DIM
5
ISET
PGND
EP
AGND
4
RIADJ
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
1/35

172946001
WLMDU9456001JT / 172946001
MagI3C Power Module
LDHM - LED Step Down High Current Module
PACKAGE
LED+
LED+
DIM
AGND
ISET
IFIX
LED-
1
2
3
4
5 EP
6
7
Top view
Exposed Pad = PGND
Connect to AGND
YMLLLLG3
WE201
6
7
Package marking
MARKING DESCRIPTION
Marking
WE
Y
M
LLLL
G3
WE201
Description
Würth Elektronik trade name
Year
Month
Lot trace code
Lead finish code per JEDEC norm (green 3 mat sin)
Part identifier
PIN DESCRIPTION
SYMBOL
LED+
PIN #
1, 2
DIM 3
AGND
4
ISET
5
IFIX
LED-
PGND
6
7
EP
TYPE
Power
Input
Supply
Input
Input
Power
Power
PIN DESCRIPTION
Supply input and rail connection to the anode of the LED string.
Dimming control signal input. Left floating enables the driver. Optional: apply a logic
level PWM signal to control the brightness of the LED string.
The analog ground pin is the reference point for all stated voltages and must be
connected to the exposed pad (EP) externally.
Connect a resistor between this pin and GND to adjust the LED current up to
450mA. If the default LED current of 350mA is desired, leave this pin floating.
Connect this pin to GND to set the default LED current of 350mA. In case a different
value of LED current is required, leave this pin floating.
The current return pin of the LED string. Connect to the cathode of the LED string.
Exposed Pad. Connect to copper plane(s) with thermal vias for thermal
performance. Must be electrically connected to pin 4.
We-online.com
© May 2016
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
2/35


Features WLMDU9456001JT / 172946001 MagI3C Power Module LDHM - LED Step Down High Curren t Module 4.5 - 60V / 450mA / 4.5 - 60V Output DESCRIPTION The LDHM type of th e MagI³C Power Module family provides a fully integrated constant current LED driver including the buck switching re gulator and inductor in a package. The 172946001 offers high efficiency and de livers up to 450mA of LED current. It o perates from 4.5V input voltage up to 6 0V and supports up to 16 LEDs in series . It is designed for fast PWM dimming f or no color shift. It is available in a n innovative industrial high power dens ity TO263-7EP (10.16 x 13.77 x 4.57mm) package that enhances thermal performan ce and allows for hand or machine solde ring. The LDHM regulator has an on-boar d protection circuitry to guard against thermal overstress and electrical dama ge featuring thermal shut-down, input u nder-voltage lockout and LED short-circ uit protections. TYPICAL APPLICATIONS Indoor lighting: Spot light, down light ƒ Outdoor lighting: Str.
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