FX5959 G701 ADJ SM
Vishay
Power LED Driver the Smallest and the Low Profile, Surface Mount
Application, Constant Current Source 0- 2.0A, 2.5V to 7V, with
450W/in
3
PowerDensity and High Efficiency
FEATURES
•
Fully integrated Power LED driver
•
High efficiency over large load range
•
100% duty cycle
•
Power density - more than450W/inch
3
•
1µA shutdown current
•
Variable input voltage 2.5V to 6V (1Li+ and 3-cell NiCd or NiMH cells)
•
Controlled output current
•
Programmable PWM/PSM controls
•
Low output ripple
•
BGA construction
•
Temperature range: - 40°C to + 85°C
•
No external components required
•
Output power 15W
•
Maximum current 2.5A
•
Short circuit protection
•
Low profile
The Power LED Driver is dedicated for optimum performance
to drive Power LED’s. FX5959 is a complete system solution
for all Power LED’s with current for e.g. > 300mA. The driver
provides a constant current without exceeding the applicable
LED voltage to ensure the specified LED load life time. The
integrated Current Source provides flexibility of utilizing
various battery configurations and chemistries such as NiCd,
NiMH, or Li+ with input voltage range of 2.5v to 6v. An
additional flexibility is provided by using external resistors to
adapt to various voltage input levels and LED configurations.
For ultra-high efficiency, the Power LED Driver is designed to
operate in synchronous rectified PWM mode under full load
while transforming into externally controlled pulse-skipping
mode (PSM) under light load (e.g. LED’s with 20 to 200mA).
The FX5959 Current Source is available in 25-ports BGA
package. In order to satisfy the stringent ambient
temperature requirements, the Current Source is designed to
handle the industrial temperature range of - 40°C to 85°C.
APPLICATION
•
Bike lamps
•
Headlights and flashlights
•
Medical instrumentation
•
General and emergency/alarm lightning
•
Design and architectural lighting
•
Interior and runway lights
•
Outdoor accent lighting
•
Household applications
ORDERING INFORMATION
FX
FUNCTION
SIZE
CIRCUIT IDENTIFIER
OUTPUT VOLTAGE - Example: 3.3V should be written as 3V3 as the V
indicates the decimal point, or ADJ for adjustable version - self selectable output voltage.
SURFACE MOUNT VERSION
PACKAGING - B1 = 10pcs in bulk; B5 = 50pcs in bulk; T1 = 13” reel; T2 = 7” reel.
For lead (pb) - free solder please contact factory.
* Note: For fixed output current please contact FunctionPAK@vishay.com
Document Number: 10142
Revision: 29-Mar-05
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
1
5959
G701
ADJ
SM*
FX5959 G701 ADJ SM
Vishay
PIN DESCRIPTION AND RECOMMENDED BOARD LAYOUT
PIN
SD
DESCRIPTION
Logic low on SD pin shuts down the Current Source completely and decreases current consumption to less than 1uA
Externally controlled synchronization signal. Logic high to low transition forces the clock synchronization.
If not used the pin must be connected to Vin or logic high.
Input supply voltage
Ground
Included inside the package for fixed voltage. To be added externally for all self-selected voltages.
Voltage test point. To test the minimum gap above VL.
To be added externally for selected output current.
Output current. LED connection
PWM/PSM Logic high =PWM mode, logic low =PSM mode. In PSM mode synchronous rectification is disabled.
SYNC
Vin
GND
R1
V
TP
R0
V
L
www.vishay.com
2
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10142
Revision: 29-Mar-05
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