MAX16815ATT+T [MAXIM]

LED Driver, 1-Segment, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, MO-229WEEA, TDFN-6;
MAX16815ATT+T
型号: MAX16815ATT+T
厂家: MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述:

LED Driver, 1-Segment, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, MO-229WEEA, TDFN-6

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EVALUATION KIT AVAILABLE  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
General Description  
Features  
6.5V to 40V Operating Range  
The MAX16815/MAX16828 current regulators operate  
from a 6.5V to 40V input voltage range and deliver  
up to 100mA (MAX16815) or 200mA (MAX16828) to  
high-brightness LED (HB LED) loads. The output current  
is adjusted by using an external current-sense resistor  
in series with the LEDs. The MAX16815/MAX16828’s  
dimming input allows wide-range “pulsed” PWM opera-  
tion. An on-board pass element minimizes external com-  
ponents while providing ±3.5% output-current accuracy.  
Adjustable LED Current  
MAX16815: 35mA to 100mA  
MAX16828: 35mA to 200mA  
±3.5% LED Current Accuracy  
High-Voltage DIM Input for Dimming Interface  
Integrated Pass Element with Low-Dropout Voltage  
(0.4V typ)  
The MAX16815/MAX16828 are available in  
a
5V Regulated Output with 4mA Source Capability  
Thermal Shutdown  
thermally enhanced, 3mm x 3mm, 6-pin TDFN package  
with exposed pad and in an 8-pin SO package with  
exposed pad; they are specified over the automotive  
-40°C to +125°C temperature range.  
Output Short-Circuit Protection  
Available in Small, Thermally Enhanced,  
3mm x 3mm, 6-Pin TDFN and 8-Pin SO with  
Exposed Pad Packages  
Applications  
Emergency Vehicle Warning Lights  
Signage and Indicators  
Ambient and Architectural Lighting  
LED Bulbs  
-40°C to +125°C Operating Temperature Range  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
6 TDFN-EP*  
8 SO-EP*  
Display Backlighting  
MAX16815ATT+  
MAX16815ASA+  
MAX16828ATT+  
MAX16828ASA+  
6 TDFN-EP*  
8 SO-EP*  
Pin Configurations appear at end of data sheet.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Typical Operating Circuit  
Simplified Diagram  
+6.5V TO +40V  
6.5V TO 40V  
IN  
OUT  
V5  
IN  
OUT  
V5  
C1  
0.1µF  
+5V REG  
C2  
+5V REG  
0.1µF  
LEDs  
LEDs  
MAX16815  
MAX16828  
EN  
MAX16815  
MAX16828  
CS+  
CS-  
CS+  
PWM  
DIMMING  
R
SENSE  
R
SENSE  
PWM DIMMING  
DIM  
CS-  
DIM  
GND  
GND  
19-4032; Rev 2; 4/14  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Absolute Maximum Ratings  
IN to GND..............................................................-0.3V to +45V  
CS+, CS-, V5 to GND .............................................-0.3V to +6V  
Operating Temperature Range......................... -40°C to +125°C  
Junction Temperature......................................................+150°C  
DIM, EN to GND.........................................-0.3V to (V + 0.3V)  
Junction-to-Case Thermal Resistance (θ ) (Note 1)  
IN  
JC  
OUT Short Circuited to GND Duration  
6-Pin, 3mm x 3mm TDFN..............................................9°C/W  
8-Pin SO........................................................................7°C/W  
(at V = +16V)...................................................... 60 minutes  
IN  
Maximum Current into Any Pin (except IN and OUT)......±20mA  
Junction-to-Ambient Thermal Resistance (θ ) (Note 1)  
JA  
Continuous Power Dissipation (T = +70°C)  
6-Pin, 3mm x 3mm TDFN  
derate 18.2mW/°C above +70°C)...........................1454.5mW  
8-Pin SO (derate 23.3mW/°C above +70°C)..........1860.5mW  
6-Pin, 3mm x 3mm TDFN............................................42°C/W  
8-Pin SO......................................................................43°C/W  
Storage Temperature Range............................ -60°C to +150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
A
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer  
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.  
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these  
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect  
device reliability.  
Electrical Characteristics  
(V = 12V, V  
= 12V (SO only), C = 0.1µF to GND, I = 0, V  
= 4V, V - = 0V (SO only), connect R  
= 2(MAX16815)  
SENSE  
IN  
EN  
V5  
V5  
DIM  
CS  
and R  
= 1(MAX16828) between CS+ and GND. TA = -40°C to +125°C, unless otherwise noted. Typical values are at  
SENSE  
T
= +25°C.) (Note 2)  
A
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
40.0  
2
UNITS  
Supply Voltage Range  
V
(Note 3)  
6.5  
V
IN  
I
I
= 100mA  
0.82  
1
LOAD  
LOAD  
Ground Current  
I
mA  
µA  
G
= 200mA  
2
Shutdown Supply Current  
Guaranteed Output Current  
I
V
≤ 0.6V (SO only)  
35  
70  
SHDN  
EN  
R
= 2_ (MAX16815)  
= 1_ (MAX16828)  
100  
200  
SENSE  
SENSE  
I
mA  
OUT  
R
35mA < I  
35mA < I  
< 100mA (MAX16815)  
±3.5  
±3.5  
OUT  
Output Current Accuracy  
%
V
< 200mA (MAX16828)  
OUT  
I
= 100mA (current pulsed),  
OUT  
0.1  
0.1  
0.4  
0.6  
12V < V < 40V (MAX16815) (Note 4)  
IN  
I
= 100mA (current pulsed),  
OUT  
6.5V < V < 12V (MAX16815) (Note 4)  
IN  
Dropout Voltage  
DVDO  
I
= 200mA (current pulsed),  
OUT  
0.27  
0.27  
0.55  
0.7  
12V < V < 40V (MAX16828) (Note 5)  
IN  
I
= 200mA (current pulsed),  
OUT  
6.5V < V < 12V (MAX16828) (Note 5)  
IN  
Current rising  
Current falling  
9.7  
9.7  
Output Current Slew Rate  
Short-Circuit Current  
mA/µs  
mA  
V
V
= 0V, V = 12V, MAX16815  
130  
250  
200  
300  
270  
350  
OUT  
IN  
= 0V, V = 12V, MAX16828  
OUT  
IN  
EN INPUT (SO ONLY)  
EN Input Current  
I
-2.5  
2.8  
-1  
-0.2  
0.6  
µA  
V
EN  
EN Input Voltage High  
EN Input Voltage Low  
V
IH  
V
V
IL  
Maxim Integrated  
2  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Electrical Characteristics (continued)  
(V = 12V, V  
= 12V (SO only), C = 0.1µF to GND, I = 0, V  
= 4V, V - = 0V (SO only), connect R  
= 2(MAX16815)  
SENSE  
IN  
EN  
V5  
V5  
DIM  
CS  
and R  
= 1(MAX16828) between CS+ and GND. TA = -40°C to +125°C, unless otherwise noted. Typical values are at  
SENSE  
T
= +25°C.) (Note 2)  
A
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
CURRENT SENSE  
V
V
= V  
= V  
for TDFN package;  
RSNS  
RSNS  
CS+  
CS+  
Regulated R  
Voltage  
V
193  
-0.3  
200  
207  
mV  
SENSE  
RSNS  
- V  
CS-  
for SO package  
CS- Voltage Range  
Input Current (CS+)  
Input Current (CS-)  
DIM Input Current  
SO only  
+4.7  
7
V
µA  
µA  
µA  
V
V
V
V
= 220mV  
2.7  
17.2  
-1.0  
CS+  
CS+  
DIM  
= 220mV (SO only)  
= 0V  
-50  
-2.5  
2.8  
-0.2  
DIM Input-Voltage High  
DIM Input-Voltage Low  
Turn-On Time  
V
IH  
V
0.6  
100  
55  
V
IL  
t
After V  
After V  
rising to 4V (Note 7)  
µs  
µs  
ON  
DIM  
Turn-Off Time  
t
falling to 0.6V (Note 7)  
OFF  
DIM  
THERMAL OVERLOAD  
Thermal-Shutdown Temperature  
Thermal-Shutdown Hysteresis  
+5V REGULATOR  
+159  
24  
°C  
°C  
Output-Voltage Load Regulation  
Output Voltage  
V
(Note 8)  
0 < I < 4mA  
4.8  
5.0  
12  
15  
5.2  
20  
V
V5  
DV  
mV/mA  
mA  
V5  
V5  
V5 Short-Circuit Current  
V
= 0 (Note 9)  
V5  
Note 2: All devices are 100% production tested at T = +25°C. Limits over the operating temperature range are guaranteed by  
A
design.  
Note 3: Resistors were added from OUT to CS+ to aid with power dissipation.  
Note 4: Dropout is measured as follows:  
Connect R from OUT to CS+. Connect R  
= 2Ω (MAX16815) from CS+ to GND (for TDFN) or from CS+ to CS- (for  
O
SENSE  
SO). Set V = 12V (record V  
= V  
). For V = 40V, use R = 360Ω; for V = 6.5V, use R = 56Ω.  
IN  
OUT1  
OUT IN O IN O  
Reduce V until V  
= 0.97 x V  
(record as V  
and V  
). DVDO = V  
- V  
.
IN  
OUT  
OUT1  
IN2  
OUT2  
IN2  
OUT2  
Note 5: Dropout is measured as follows:  
Connect R from OUT to CS+. Connect RSENSE = 1Ω (MAX16828) from CS+ to GND (for TDFN) or from CS+ to CS- (for  
O
SO). Set V = 12V (record V  
= V  
). For V = 40V, use R = 180Ω; for V = 6.5V, use R = 27Ω.  
IN  
OUT1  
OUT  
IN  
O
IN  
O
Reduce V until V  
= 0.97 x V  
(record as V  
and V  
). ∆V  
= V  
- V  
.
IN  
OUT  
OUT1  
IN2  
OUT2  
DO  
IN2  
OUT2  
Note 6: I = 0mA.  
V5  
ON  
Note 7: t  
time includes the delay and the rise time needed for I  
to reach 90% of its final value. t time is the time needed  
OFF  
OUT  
for I  
to drop below 10%. See the Typical Operating Characteristics. t  
and t  
are tested with 100Ω (MAX16815) or  
OUT  
ON  
OFF  
51Ω (MAX16828) from OUT to CS+.  
Note 8: Current regulation varies with V5 load (see the Typical Operating Characteristics).  
Note 9: Thermal shutdown does not function if V5 is shorted to ground.  
Maxim Integrated  
3  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Typical Operating Characteristics  
(V = 12V, T = +25°C, unless otherwise noted.)  
IN  
A
OUTPUT CURRENT  
vs. TEMPERATURE  
V
+ (FOR TDFN) OR V  
- V (FOR SO)  
OUTPUT CURRENT  
vs. INPUT VOLTAGE  
CS  
CS+ CS-  
vs. OUTPUT CURRENT  
0.4  
0.3  
0.2  
0.1  
0
400  
350  
300  
250  
200  
150  
100  
50  
300  
250  
200  
150  
100  
50  
MAX16815 AND MAX16828  
I
UP TO 100mA FOR MAX16828  
OUT  
MAX16828 I  
= 200mA  
= 100mA  
LOAD  
LOAD  
MAX16828  
MAX16815  
MAX16815 I  
MAX16815 AND MAX16828 I  
= 35mA  
LOAD  
0
0
35 40 45 50 55 60 65 70 75 80 85 90 95 100  
OUTPUT CURRENT (mA)  
5
10  
15  
20  
25  
30  
35  
40  
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
TEMPERATURE (C)  
INPUT VOLTAGE (V)  
V
+ (FOR TDFN) OR V  
vs. I  
- V (FOR SO)  
CS+ CS-  
V5  
DROPOUT VOLTAGE  
vs. TEMPERATURE  
+5V REGULATOR OUTPUT  
vs. TEMPERATURE  
CS  
0.5  
0.4  
0.3  
0.2  
0.1  
0
5.2  
5.1  
5.0  
4.9  
4.8  
0.4  
0.3  
0.2  
0.1  
0
MAX16815 AND MAX16828  
MAX16815 AND MAX16828  
MAX16828 I  
= 200mA  
LOAD  
NO LOAD  
I
= 1mA  
V5  
I
V5  
= 5mA  
MAX16815 I  
= 100mA  
LOAD  
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
TEMPERATURE (C)  
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
TEMPERATURE (C)  
0
1
2
3
4
I
V5  
(mA)  
MAX16815 200Hz DIMMED OPERATION  
MAX16815 200Hz DIMMED OPERATION  
+5V REGULATOR OUTPUT vs. V  
(EXPANDED)  
IN  
MAX16815 toc08  
MAX16815 toc09  
5.2  
5.1  
5.0  
4.9  
4.8  
MAX16815 AND MAX16828  
I
= 100mA, V = 12V  
LOAD IN  
I
= 100mA, V = 12V  
LOAD IN  
DIM PULSED AT 200Hz  
150% DUTY CYCLE  
DIM PULSED AT 200Hz  
150% DUTY CYCLE  
V
DIM  
V
DIM  
10V/  
10V/div  
0V  
0V  
NO LOAD  
I
= 1mA  
V5  
I
LOAD  
I
LOA  
50m  
50mA/d  
0
0
I
= 5mA  
V5  
1ms/div  
5
10  
15  
20  
V
25  
(V)  
30  
35  
40  
10s/div  
IN  
Maxim Integrated  
4  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Typical Operating Characteristics (continued)  
(V = 12V, T = +25°C, unless otherwise noted.)  
IN  
A
MAX16815 200Hz DIMMED OPERATION  
(EXPANDED)  
MAX16828 200Hz DIMMED OPERATION  
MAX16815 toc10  
MAX16815 toc11  
I
= 100mA, V = 12V  
IN  
I
= 200mA, V = 12V  
IN  
LOAD  
LOAD  
DIM PULSED AT 200Hz  
50% DUTY CYCLE  
DIM PULSED AT 200Hz  
50% DUTY CYCLE  
V
V
DIM  
DIM  
10V/div  
10V/div  
0V  
0V  
I
I
LOAD  
LOAD  
50mA/div  
200mA/div  
0
0
20s/div  
1ms/div  
MAX16828 200Hz DIMMED OPERATION  
MAX16828 200Hz DIMMED OPERATION  
(EXPANDED)  
(EXPANDED)  
MAX16815 toc12  
MAX16815 toc13  
I
= 200mA, V = 12V  
IN  
I
= 200mA, V = 12V  
IN  
LOAD  
LOAD  
DIM PULSED AT 200Hz  
50% DUTY CYCLE  
DIM PULSED AT 200Hz  
50% DUTY CYCLE  
V
V
DIM  
DIM  
10V/div  
10V/div  
0V  
0V  
I
LOAD  
I
LOAD  
200mA/div  
200mA/div  
0
0
20s/div  
20s/div  
Maxim Integrated  
5  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Pin Description  
PIN  
NAME  
FUNCTION  
TDFN  
SO  
Pulsed Dimming Input. Drive DIM low to turn off output current (LED current). Drive DIM  
1
6
DIM  
high to turn on the output current (LED current). DIM is pulled high to V when left  
IN  
unconnected  
Enable Input. Drive EN high to enable the output. For the TDFN package, this input is not  
accessible and always high  
7
EN  
2
3
8
1
OUT  
IN  
Current-Regulated Output  
Positive Input Supply. Bypass IN with a 0.1µF (min) capacitor to GND  
LED Current-Sense Amplifier Positive Input. For the SO package version, connect the  
current-sense resistor between this pin and CS-; for the TDFN version, connect it between  
this pin and ground.  
4
2
CS+  
5
3
4
5
CS-  
V5  
LED Current-Sense Amplifier Negative Input. Connect to ground  
+5V Regulated Output. Connect a 0.1µF (min) capacitor from V5 to GND  
Ground  
6
GND  
Exposed Pad. Connect to a large ground plane for effective power dissipation. Do not use as  
the only ground connection.  
EP  
DFN Functional Diagram  
DIM  
IN  
0.8A  
1.2V  
BANDGAP  
AND 5V  
V5  
REGULATOR  
IREG  
P
OUT  
CS+  
THERMAL  
SHUTDOWN  
DIFF  
AMP  
GND  
MAX16815  
MAX16828  
Maxim Integrated  
6  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
SO Functional Diagram  
DIM  
IN  
0.8A  
1.2V  
EN  
V5  
BANDGAP  
AND 5V  
REGULATOR  
IREG  
P
OUT  
CS+  
THERMAL  
SHUTDOWN  
DIFF  
AMP  
GND  
CS-  
MAX16815  
MAX16828  
Detailed Description  
Applications Information  
+5V Regulator  
Programming the LED Current  
The MAX16815/MAX16828 include a fixed +5V output  
regulator that delivers up to 4mA of load current through-  
out the 6.5V to 40V input voltage range. Connect a 0.1µF  
compensation capacitor from V5 to ground. Shorting V5  
to ground disables the thermal shutdown. V5 stays on  
during PWM dimming.  
The MAX16815/MAX16828 use a sense resistor across  
CS+ and GND for the TDFN package or across CS+ and  
CS- for the SO package, to set the LED current. The LED  
current is given by I  
= V  
/R  
.
LED  
RSNS SENSE  
Input-Voltage Considerations  
For proper operation, the minimum input voltage must  
always be:  
Thermal Protection  
The MAX16815/MAX16828 enter a thermal-shutdown  
mode in the event of overheating. This typically occurs  
in overload or output short-circuit conditions. If the  
V
≥ V  
+ V  
+ ∆V (MAX)  
IN(MIN)  
RSNS(MAX)  
FT(MAX) DO  
where V  
is the total forward voltage of all series  
FT(MAX)  
connected LEDs. The minimum operating voltage of  
the device is +6.5V. The device operates below +6.5V;  
however, output current may not meet the full regulation  
specification (see the Typical Operating Characteristics)  
and the V5 regulator will drop below 5V.  
junction temperature exceeds T = +159°C (typ), the  
J
internal thermal-protection circuitry turns off the series  
pass device. The MAX16815/MAX16828 recover from  
thermal-shutdown mode once the junction tempera-  
ture drops by 24°C (typ). The devices therefore protect  
themselves by thermal cycling in the event of a short-  
circuit or overload condition. Shorting V5 to ground  
disables the thermal shutdown.  
Low-Frequency PWM Dimming  
at the Output  
Provide a pulse to the dimming input (DIM) of the  
MAX16815/MAX16828 to produce a PWM output.  
Alternatively, connect DIM to IN and pulse IN.  
Maxim Integrated  
7  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
D1  
STOP  
TAIL  
D2  
IN  
OUT  
R1  
D3  
MAX16815  
MAX16828  
R2  
+5V REG  
C2  
LEDs  
V5  
C1  
IN  
DIS  
D4  
DIM  
OUT  
CS+  
R3  
ICM7555  
R4*  
GND  
R
SENSE  
TH  
TRG  
GND  
CS-  
C2  
*R4 < 300k  
Figure 1. PWM Dimming Operation with ICM7555 Timer  
Two Brightness Levels for  
TAIL/STOP Lights  
Figure 1 shows PWM dimming operation for the  
MAX16815/MAX16828 with an ICM7555 timer. The  
ICM7555 provides adjustable duty cycle using two exter-  
nal resistors and a capacitor. In TAIL operation, the output  
of the ICM7555 feeds into DIM and lights up the LEDs.  
The LED’s brightness depends on the duty cycle of the  
V
IN  
IN  
OUT  
MAX16815  
MAX16828  
LEDs  
V5  
C1  
PWM  
DIMMING  
C2  
RT  
R2  
DIM  
ICM7555. When V  
is present, DIM is pulled up to  
STOP  
CS+  
CS-  
V . The PWM dimming operation is disabled and the  
STOP  
GND  
R1  
LEDs light up to full brightness. See the ICM7555 data  
sheet for formulas to calculate the dimming frequency and  
the duty cycle.  
LED Current Thermal Foldback  
With a minimum number of external components, the  
MAX16815/MAX16828 provide LED current thermal fold-  
back using a negative temperature coefficient (NTC)  
thermistor. Figure 2 shows a thermistor connected to V5  
and the CS+ of the MAX16815/MAX16828. As the tem-  
perature increases, the voltage drop across R2 increases,  
causing the LED current to decrease.  
Figure 2. LED Current Thermal Foldback with an NTC  
Thermistor  
STOP operation, Q1 turns on and the output current  
is set by a parallel combination of R1 and R2. Figure  
4 shows an application circuit with the MAX16815/  
MAX16828 using a single BJT to provide high output  
current. For proper operation:  
I
= [V  
- (R2 / R ) (V - V  
)]/R1  
LED  
RSNS  
T
V5  
RSNS  
V
> VCESAT(MAX) + VFT(MAX) + VRSNS  
Other Applications  
IN(MIN)  
The application circuit in Figure 3 implements a two-  
level brightness current for TAIL/STOP lights. In TAIL  
operation, Q1 is off and R1 sets the output current. In  
where V  
of the external BJT and V  
voltage of all series connected LEDs.  
is the maximum saturation voltage  
CESAT(MAX)  
is the total forward  
FT(MAX)  
Maxim Integrated  
8  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
STOP  
D1  
LEDs  
IN  
OUT  
DIM  
V5  
TAIL  
V
IN  
IN  
Q1  
OUT  
V5  
MAX16815  
MAX16828  
LEDs  
C2  
R3  
MAX16815  
MAX16828  
C1  
C1  
CS+  
CS-  
PWM  
DIMMING  
C2  
R2  
DIM  
GND  
R1  
CS+  
CS-  
Q1  
GND  
R
SENSE  
Z1  
Figure 3. Two-Level Brightness with Current Level Switch for  
TAIL/STOP Lights  
Figure 4. Increased LED Current (Ampere Range)  
with a Single BJT  
D1  
L1  
V
IN  
C
REF  
C3  
IN  
IN  
IN  
REF  
OUT  
OUT  
OUT  
V
CC  
C2  
R3  
U2  
U4  
U3  
LEDs  
LEDs  
LEDs  
MAX5094C  
C
COMP  
MAX16815  
MAX16815  
MAX16815  
EN MAX16828  
EN MAX16828  
EN MAX16828  
V5  
V5  
V5  
COMP  
FB  
Q1  
OUT  
GND  
C4  
R
COMP  
C7  
C11  
C9  
C6  
C10  
C8  
DIM  
DIM  
DIM  
CS+  
CS+  
CS+  
R5  
R7  
R6  
R4  
GND  
CS-  
GND  
CS-  
GND  
CS-  
C
T
/R  
CS  
T
CT  
R2  
Figure 5. Multichannel HB LED Drivers for LCD Backlight  
Multichannel HB LED Driver  
Chip Information  
PROCESS: BiCMOS  
Figure 5 shows an array of MAX16815/MAX16828s with  
independent DIM control. The MAX5094C, a current-  
mode PWM controller, provides the input power to each  
LED driver preregulated voltage to multiple MAX16815/  
MAX16828 drivers.  
Maxim Integrated  
9  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Pin Configurations  
TOP VIEW  
6
5
4
IN  
CS+  
CS-  
V5  
1
2
3
4
8
7
6
5
OUT  
EN  
MAX16815  
MAX16828  
DIM  
GND  
MAX16815  
MAX16828  
EP*  
SO  
EP*  
+
1
2
3
TDFN  
*EP = EXPOSED PAD  
Package Information  
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,  
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing  
pertains to the package regardless of RoHS status.  
PACKAGE TYPE  
8 SO-EP  
PACKAGE CODE  
S8E-12  
DOCUMENT NO.  
21-0111  
6 TDFN-EP  
T633-2  
21-0137  
Maxim Integrated  
10  
www.maximintegrated.com  
MAX16815/MAX16828  
High-Voltage, 100mA/200mA Adjustable Linear  
High-Brightness LED Drivers with PWM Dimming  
Revision History  
REVISION REVISION  
PAGES  
DESCRIPTION  
CHANGED  
NUMBER  
DATE  
0
2/08  
Initial release  
Added the SO package to the Ordering Information table, Electrical Characteristics,  
TOC 2 and TOC 6, Pin Description table, and Functional Diagrams; modified the  
Simplified Diagram and Figures 1–4 to include the CS- pin; and added the SO-EP  
Pin Configuration  
1
2
7/09  
4/14  
1–4, 6–10  
1
No /V OPNs; removed automotive references from Applications section  
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.  
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses  
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)  
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.  
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.  
© 2014 Maxim Integrated Products, Inc.  
11  

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