LED Driver. SP7616 Datasheet

SP7616 Driver. Datasheet pdf. Equivalent


Sipex Corporation SP7616
www.DataSheet4U.com
- SP7616
High Accuracy 4-Channel Low Side
LED Driver for CCFL Replacement
FEATURES
Wide 4.5V to 30V operating range
60mA LED current per channel
1.5% channel to channel current matching
Analog Dimming control
PWM operation up to 5kHz with 10% Duty Cycle
Low dropout: 150mV @ 20mA
Built-in Over Temperature Protection
Lead Free, RoHS Compliant Packaging:
Small 2X3mm DFN
Connect heat sink
pad to GND
DESCRIPTION
The SP7616 is a 30V 4-Channel linear low side LED driver. It is capable of powering up to four
LED strings of nine LEDs @ 60mA per string for a total of 36 LEDs with 1.5% typical current
matching between channels. The desired LED current can be adjusted with an external resistor,
and the precision string-to-string current matching ensures consistent color temperature across
the whole display. The device also features very low dropout voltage to maximize system
efficiency and avoid difficult thermal design constraints. Dimming can be achieved by feeding a
PWM signal to the PWM pin, or use an analog signal to control the ISET current, this allows
brightness control without unwanted color shifts. Fast LED current turn-on/off time allows up to 5
kHz PWM dimming frequencies with as low as 10% duty cycle, completely eliminating flicker. The
built-in thermal protection prevents damage to the device under fault conditions.
TYPICAL APPLICATION CIRCUIT
RSET
Mar 22-07 RevD
SP7616: Low Side LED Driver
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1
2007 Sipex Corporation


SP7616 Datasheet
Recommendation SP7616 Datasheet
Part SP7616
Description High Accuracy 4-Channel Low Side LED Driver
Feature SP7616; www.DataSheet4U.com - SP7616 High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement FEA.
Manufacture Sipex Corporation
Datasheet
Download SP7616 Datasheet




Sipex Corporation SP7616
-
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended period of time may affect
reliability.
VIN……….…………………………………….…-0.3V to 32V
LED1, LED2, LED3, LED4 ……………..…... -0.3V to 32V
ISET, PWM …..…………………..………….. -0.3V to 6.0V
Storage Temperature..…………………… -65 °C to 150 °C
Junction Temperature.............................. -40°C to +150°C*
Lead Temperature (Soldering, 10 sec)....……………300°C
* Internally protected
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: VIN = 4.5V - 30V, CIN = 1µF, -40°C < TA < 85°C, - 40°C <TJ< 125°C. Bold values apply over the full
operating temperature range.
PARAMETER
Operating Input Voltage Range
Shutdown Supply Current
Quiescent Supply Current
Quiescent Supply Current
Quiescent Supply Current
LED Current Matching
LED Current Line Regulation
Line Regulation
Maximum LED Current per channel
LED Leakage Current
Dropout Voltage
Output/ISET Current Multiplication
Ratio
Thermal Shutdown Die Temperature
Thermal Shutdown Hysteresis
PWM Pin Logic LOW
PWM Pin Logic HIGH
PWM pin Hysteresis
ISET Voltage
ISET Shutdown Threshold
ISET Shutdown Threshold Hysteresis
PWM Dimming Frequency Range
PWM Dimming Duty Cycle Range
Turn-on time from Shutdown
Turn-off time into Shutdown
MIN
4.5
-3
2.4
0.985
0.1
10
TYP
30
350
1
1.5
1.5
0.5
0.05
0.2
950
150
15
400
1.00
0.3
100
MAX
30
40
500
1.5
3
3
1
0.1
60
2
0.3
0.8
5.5
1.015
3
5
90
300
20
UNITS
V
µA
µA
mA
mA
%
%/V
%/V
mA
µA
V
°C
°C
V
V
mV
V
V
kHz
%
µs
µs
CONDITIONS
Voltage at ISET is pulled to 3V;
VIN 30V
No LED connected, VLED pins
are tied to GND. RSET=1M
ILED = 30mA
ILED = 60mA
To reference channel (channel 2)
-40°C < TA < 85°C
VLED = 0.5V to 25V , VIN = 28V,
RSET =50kΏ2
VIN = 4.5V to 25V, VLED=0.5V 3
RSET = 15.38KΏ,
PWM pin LOW’ VLED 1V; VIN 5V
Note 4
+/- 4 Percent -40°C < TA < 85°C
ILED = 0mA. LED current will self
recover when temperature drops
below the trip point, minus
thermal shut down hysteresis.
Driver is disabled
Driver is active
If ISET is pulled above this
threshold the device goes into full
shutdown
Applied to PWM pin
Applied to PWM pin
VMOD from 5V to 0.0V, RSET =
50k
VMOD from 0.0V to 5V, RSET =
50k
Note
1. Reference channel ILED Variations from specified by RSET value
2. ILED Variations from specified by RSET value at VLED changing from 0.5 to 25V
3. ILED Variations from specified by RSET value at VIN changing from 4.5 to 25V
4. RSET = 31.6KΏ: Dropout voltage is measured as the VLED voltage where LED current drops 5% from nominal value
Mar 22-07 RevD
SP7616: Low Side LED Driver
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2
2007 Sipex Corporation



Sipex Corporation SP7616
-
PIN DESCRIPTION
PIN
NAME
VIN
PWM
ISET
GND
LED1-
LED4
DESCRIPTION
PIN #
Input voltage for the IC. Connect a 1uF decoupling
capacitor between this pin and ground.
This pin must be held high to enable the output drivers. It can
be used for PWM dimming up to 5 kHz.
Connect resistor RSET from this pin to ground to set output
current. Pulling this pin above the shutdown threshold
stated in the Electrical Specifications puts the IC into
shutdown mode
Ground return for LED currents and circuitry of the SP7616
Connect an LED between each pin and VIN. Current value
is controlled by RSET. The current level through each pin is
internally matched within 3%. Connect unused channel (s)
to GND to save current consumption.
1
2
3
4
5-8
BLOCK DIAGRAM
Mar 22-07 RevD
SP7616: Low Side LED Driver
--
3
2007 Sipex Corporation







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