MAX16835ATE+

更新时间:2024-09-18 19:11:35
品牌:MAXIM
描述:LED Driver, 1-Segment, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHB, TQFN-16

MAX16835ATE+ 概述

LED Driver, 1-Segment, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHB, TQFN-16 LED驱动器 显示驱动器

MAX16835ATE+ 规格参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:QFN
包装说明:HVQCCN, LCC16,.2SQ,32针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:2.24数据输入模式:SERIAL
接口集成电路类型:LED DISPLAY DRIVERJESD-30 代码:S-XQCC-N16
长度:5 mm湿度敏感等级:1
复用显示功能:NO功能数量:1
区段数:1端子数量:16
最高工作温度:125 °C最低工作温度:-40 °C
封装主体材料:UNSPECIFIED封装代码:HVQCCN
封装等效代码:LCC16,.2SQ,32封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
电源:12 V认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Display Drivers
最大供电电压:40 V最小供电电压:6.5 V
标称供电电压:12 V表面贴装:YES
技术:BICMOS温度等级:AUTOMOTIVE
端子形式:NO LEAD端子节距:0.8 mm
端子位置:QUAD处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:5 mmBase Number Matches:1

MAX16835ATE+ 数据手册

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MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
General Description  
Features  
o +6.5V to +40V Operating Range  
o Adjustable LED Current (35mA to 350mA)  
3.5ꢀ Output Current Aꢁꢁuraꢁc  
The MAX16835 current regulator operates from a 6.5V  
to 40V input voltage range and delivers up to a total of  
350mA to one or more strings of high-brightness LEDs  
(HB LEDs). The output current of the MAX16835 is  
adjusted by using an external current-sense resistor in  
series with the LEDs. An enable input allows wide-  
range “pulsed” dimming. Wave-shaping circuitry  
reduces EMI. The differential current-sense input  
increases noise immunity. The MAX16835 is well suited  
for applications requiring high-voltage input and is able  
to withstand automotive load-dump events up to 40V.  
An on-board pass element minimizes external compo-  
nents while providing 3.5ꢀ output current accuracy.  
Additional features include a 5V regulated output and  
short-circuit and thermal protection.  
o
o Integrated Pass Element with Low-Dropout  
Voltage (0.55V tcp)  
o Output Short-Cirꢁuit Proteꢁtion  
o +5V Regulated Output with 4mA Sourꢁe  
Capabilitc  
o Thermal Shutdown  
o Differential LED Current Sense  
o High-Voltage Enable Pin for Dimming Interfaꢁe  
o Low Shutdown Supplc Current (35µA tcp)  
o Low 200mV Current-Sense Referenꢁe Reduꢁes  
Power Losses  
The MAX16835 is available in a thermally enhanced,  
5mm x 5mm, 16-pin TQFN package and is specified  
over the automotive -40°C to +125°C temperature range.  
o Wave-Shaped Edges Reduꢁe Radiated EMI During  
PWM Dimming  
o Available in Small, Thermallc Enhanꢁed,  
Applications  
5mm x 5mm, 16-Pin TQFN Paꢁkage  
o -40°C to +125°C Operating Temperature Range  
Automotive Interior: Map, Courtesy, and Cluster  
Lighting  
Automotive Exterior: Tail Lights and CHMSL  
Warning Lights for Emergency Vehicles  
Navigation and Marine Indicators  
General Illumination  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX16835ATE+  
MAX16835ATE/V+  
-40°C to +125°C 16 TQFN-EP*  
-40°C to +125°C 16 TQFN-EP*  
Signage, Gasoline Canopies, Beacons  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
/V denotes an automotive qualified part.  
Pin Configuration  
Simplified Diagram  
TOP VIEW  
+6.5V TO +40V  
12  
11  
10  
9
IN  
OUT  
V5  
0.1µF  
+5V REG  
N.C.  
8
7
6
5
N.C. 13  
N.C. 14  
LEDs  
0.1µF  
MAX16835  
N.C.  
N.C.  
N.C.  
MAX16835  
EN  
15  
16  
CS+  
CS-  
R
SENSE  
OUT  
+
PWM DIMMING  
EN  
1
2
3
4
GND  
TQFN  
For priꢁing, deliverc, and ordering information, please ꢁontaꢁt Maxim Direꢁt  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.ꢁom.  
19-4028; Rev 2; 10/12  
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
ABSOLUTE MAXIMUM RATINGS  
IN to GND...............................................................-0.3V to +45V  
Operating Junction Temperature Range...........-40°C to +125°C  
OUT, EN to GND..........................................-0.3V to (V + 0.3V)  
CS+, CS-, and V5 to GND........................................-0.3V to +6V  
OUT Short Circuited to GND Duration  
Junction Temperature......................................................+150°C  
Storage Temperature Range.............................-65°C to +150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
IN  
(at V = +16V) ........................................................60 minutes  
IN  
Maximum Current into Any Pin (except IN and OUT)......... 20mA  
Continuous Power Dissipation (T = +70°C)  
A
16-Pin TQFN 5mm x 5mm  
(derate 33.3mW/°C above +70°C)...........................2666.7mW  
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.  
PACKAGE THERMAL CHARACTERISTICS (Note 1)  
Junction-to-Ambient Thermal Resistance (θ ) ...............30°C/W  
JA  
Junction-to-Case Thermal Resistance (θ ).........................2°C/W  
JC  
Note 1: Package thermal resistances obtained using the method described in JEDEC specification JESD51-7, using a four-layer  
board. For detailed information on package thermal considerations, see www.maximintegrated.ꢁom/thermal-tutorial.  
ELECTRICAL CHARACTERISTICS  
(V = V = +12V, C = 0.1µF to GND, I = 0, CS- = GND, connect R  
= 0.58between CS+ and CS-. T = -40°C to  
A
V5  
IN  
EN  
V5  
SENSE  
+125°C, unless otherwise noted. Typical values are at T = +25°C.) (Notes 2 and 3)  
A
PARAMETER  
Supply Voltage Range  
Ground Current  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
40.0  
3
UNITS  
V
V
(Note 2)  
6.5  
IN  
I
G
I
= 350mA  
1.28  
35  
mA  
µA  
LOAD  
Shutdown Supply Current  
Guaranteed Output Current  
Output Current Accuracy  
I
V
0.6V  
EN  
70  
SHDN  
I
R
= 0.55  
350  
mA  
OUT  
SENSE  
35mA < I  
< 350mA  
3.5  
OUT  
I
= 350mA (current pulsed),  
OUT  
0.55  
1.2  
1.5  
V
V
12V < V < 40V  
IN  
Dropout Voltage (Note 4)  
VDO  
I
= 350mA (current pulsed),  
OUT  
0.55  
6.5V < V < 40V  
IN  
Current rising  
Current falling  
7.8  
7.8  
Output Current Slew Rate  
mA/µs  
mA  
Short-Circuit Current  
LOGIC INPUT  
EN Input Current  
EN Input Voltage High  
EN Input Voltage Low  
Turn-On Time  
V
= 12V, V  
= 0V  
CS+  
400  
500  
650  
-0.2  
IN  
I
-2.5  
2.8  
-1.0  
110  
µA  
V
EN  
V
IH  
V
0.6  
V
IL  
t
V
rising edge to 90ꢀ of OUT  
350  
µs  
ON  
EN  
CURRENT SENSE  
Regulated R  
Voltage  
V
V
V
V
= V  
- V  
CS-  
193  
-50  
200  
2.7  
207  
7.0  
mV  
µA  
µA  
SENSE  
SENSE  
SENSE  
CS+  
Input Current (CS+)  
Input Current (CS-)  
= 220mV  
= 220mV  
CS+  
CS+  
-17.2  
Maxim Integrated  
2
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
ELECTRICAL CHARACTERISTICS (ꢁontinued)  
(V = V = +12V, C = 0.1µF to GND, I = 0, CS- = GND, connect R  
= 0.58between CS+ and CS-. T = -40°C to  
A
V5  
IN  
EN  
V5  
SENSE  
+125°C, unless otherwise noted. Typical values are at T = +25°C.) (Notes 2 and 3)  
A
PARAMETER  
THERMAL OVERLOAD  
Thermal-Shutdown Temperature  
Thermal-Shutdown Hysteresis  
+5V REGULATOR  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
+159  
24  
°C  
°C  
Output Voltage  
V
4.85  
5.00  
12  
5.20  
20  
V
V5  
Output Voltage Load Regulation  
V5 Short-Circuit Current  
V5  
0 < I  
< 4mA (Note 5)  
mV/mA  
mA  
LOAD  
V5 = 0V (Note 6)  
15  
Note 2: Resistors were added from OUT to CS+ to aid with the power dissipation during testing.  
Note 3: All devices 100ꢀ production tested at T = +25°C. Limits over the operating temperature range are guaranteed by design.  
A
Note 4: Dropout is measured as follows:  
Connect R = 27from OUT to CS+. Connect R  
= 0.58from CS+ to CS-. Set V = +12V (record V  
as V  
).  
OUT1  
O
SENSE  
IN  
.
OUT  
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 5: Current regulation varies with V5 load (see the Typical Operating Characteristics).  
Note 6: Thermal shutdown does not function if the output of the 5V reference is shorted to ground.  
Typical Operating Characteristics  
(V = V = +12V, T = +25°C, unless otherwise noted.)  
IN  
EN  
A
OUTPUT CURRENT  
vs. TEMPERATURE  
(V  
- V  
)
OUTPUT CURRENT  
vs. INPUT VOLTAGE  
CS-  
CS+  
vs. OUTPUT CURRENT  
450  
0.208  
0.206  
0.204  
0.202  
0.200  
0.198  
400  
350  
300  
250  
200  
150  
100  
50  
I
= 350mA  
LOAD  
400  
350  
300  
250  
200  
150  
100  
50  
I
= 200mA  
LOAD  
I
= 100mA  
LOAD  
I
= 35mA  
LOAD  
0
0
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
20 50 80 110 140 170 200 230 260 290 320 350  
OUTPUT CURRENT (mA)  
0
5
10 15 20 25 30 35 40  
INPUT VOLTAGE (V)  
TEMPERATURE (°C)  
Maxim Integrated  
3
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
Typical Operating Characteristics (continued)  
(V = V = +12V, T = +25°C, unless otherwise noted.)  
IN  
EN  
A
DROPOUT VOLTAGE  
vs. TEMPERATURE  
+5V REGULATOR OUTPUT  
vs. TEMPERATURE  
SHUTDOWN CURRENT  
vs. TEMPERATURE  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1.0  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
5.2  
5.1  
V
= 40V  
IN  
I
= 350mA  
LOAD  
I
= 1mA  
V5  
NO LOAD  
V
= 20V  
IN  
5.0  
4.9  
4.8  
V
= 12V  
IN  
V
= 6.5V  
IN  
I
= 5mA  
V5  
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
-40 -25 -10  
5
20 35 50 65 80 95 110 125  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
(V  
CS+  
- V ) vs. I  
CS- V5  
+5V REGULATOR OUTPUT vs. V  
IN  
200Hz DIMMED OPERATION  
MAX16835 toc09  
0.206  
0.204  
0.202  
0.200  
0.198  
0.196  
5.2  
5.1  
5.0  
4.9  
4.8  
V
IN  
5V/div  
I
= 5mA  
V5  
NO LOAD  
0V  
I
LOAD  
I
= 350mA  
LOAD  
200mA/div  
0
I
= 5mA  
25  
I
V
= 350mA, V = V ,  
LOAD IN EN  
IN  
V5  
PULSED AT 200Hz (50% DUTY CYCLE)  
1ms/div  
0
1
2
3
4
5
5
10  
15  
20  
V
30  
35  
40  
I
(mA)  
(V)  
IN  
V5  
200Hz DIMMED OPERATION EXPANDED  
200Hz DIMMED OPERATION EXPANDED  
200Hz DIMMED OPERATION  
MAX16835 toc12  
MAX16835 toc10  
MAX16835 toc11  
V
V
IN  
5V/div  
IN  
EN  
5V/div  
10V/div  
0V  
0V  
0V  
I
V
V
= 350mA  
I
V
V
= 350mA  
LOAD  
IN  
IN  
LOAD  
IN  
IN  
I
LOAD  
= V  
EN  
= V  
EN  
I
LED  
200mA/div  
I
LED  
200mA/div  
PULSED AT 200Hz  
PULSED AT 200Hz  
200mA/div  
(50% DUTY CYCLE)  
(50% DUTY CYCLE)  
0
0
0
I
= 350mA, V = 12V,  
IN  
LOAD  
EN PULSED AT 200Hz (50% DUTY CYCLE)  
20µs/div  
4µs/div  
1ms/div  
Maxim Integrated  
4
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
Pin Description  
PIN  
1, 16  
NAME  
OUT  
IN  
FUNCTION  
Current-Regulated Output. Connect pin 1 to pin 16.  
2, 3  
Positive Input Supply. Bypass IN with a 0.1µF (min) capacitor to GND. Connect pin 2 to pin 3.  
No Connection. Not internally connected.  
4–8, 13, 14  
N.C.  
Positive Input of the Internal Differential Amplifier. Connect the current-sense resistor between CS+  
and CS- to program the output current level.  
9
CS+  
CS-  
Negative Input of the Internal Differential Amplifier. Connect the current-sense resistor between  
CS- and CS+ to program the output current level.  
10  
11  
12  
15  
V5  
GND  
EN  
+5V Regulated Output. Connect a 0.1µF capacitor from V5 to GND.  
Ground  
Enable Input. Drive EN high to enable the output.  
Exposed Pad. Connect to the ground plane for effective power dissipation. Do not use as the only  
ground connection.  
EP  
Functional Diagram  
V5  
IN  
REGULATOR  
IN  
EN  
REFERENCE  
GENERATOR  
ENABLE  
I
-REG  
OUT  
CS+  
DIFFERENTIAL  
SENSE  
AMPLIFIER  
MAX16835  
CS-  
THERMAL  
SHUTDOWN  
features thermal and output short-circuit protection.  
The wide operating voltage range helps protect the  
MAX16835 against large transients such as those  
found in load-dump situations up to 40V.  
Detailed Description  
The MAX16835 is a high-current regulator capable of  
providing up to a total of 350mA of current to one or  
more strings of high-brightness LEDs. A wide operating  
input voltage range of +6.5V to +40V makes the  
MAX16835 ideal for automotive applications. A +5V  
regulated output provides up to 4mA of current to  
power external circuitry. In addition, the MAX16835  
The MAX16835 uses a feedback loop to control the out-  
put current. The differential voltage across the sense  
resistor is compared to a fixed reference voltage, and  
the error is amplified to serve as the drive to the internal  
Maxim Integrated  
5
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
power series pass device (see the Functional Diagram).  
The regulation point is factory set at (V - V ) =  
connected across R  
nity and low-frequency noise rejection. The LED current  
is given by the equation below:  
provides ground-loop immu-  
SENSE  
CS+  
CS-  
200mV 3.5ꢀ. The regulated current is user defined by  
the value of R  
.
SENSE  
I
= V  
/R  
LED  
SENSE SENSE  
The MAX16835 is a current controller internally opti-  
mized for driving the impedance range expected from  
one or more HB LEDs.  
Input Voltage Considerations  
For proper operation, the minimum input voltage must  
always be:  
+5V Regulator  
The MAX16835 includes a fixed +5V output regulator  
that delivers up to 4mA of load current for low-power  
applications throughout the +6.5V to +40V input volt-  
age range. Connect a 0.1µF compensation capacitor  
from V5 to ground. Shorting V5 to ground disables the  
thermal shutdown. When EN is low, V5 is off.  
V
V  
+ V  
+ V  
IN(MIN)  
SENSE(MAX)  
FT(MAX DO(MAX)  
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, the output current may not meet the full regu-  
lation specification.  
Low-Frequency PWM  
at the Output  
Thermal Protection  
The MAX16835 enters a thermal-shutdown mode in the  
event of overheating. This typically occurs in overload or  
output short-circuit conditions. When the junction tem-  
The MAX16835 provides pulsed or chopped current  
dimming. Generally, HB LEDs are binned to match at  
their full-rated current; however, LEDs from the same  
bin exhibit poor matching at currents other than full-  
rated current. To achieve uniformity, HB LED manufac-  
turers recommend PWM pulsing of the LED current at  
their full-rated value. There are two methods for pro-  
ducing a PWM output. One method is by pulsing the  
enable input (EN) while having a constant voltage at IN.  
The other method is to connect EN to IN and pulse both  
EN and IN. Both methods generate a regulated-ampli-  
tude PWM current (variable duty cycle) that can pro-  
vide control over the LED brightness (see Figures 1  
and 2).  
perature exceeds T = +159°C (typ), the internal ther-  
J
mal-protection circuitry turns off the series pass device.  
The MAX16835 recovers from thermal-shutdown mode  
once the junction temperature drops by 24°C (typ). The  
part therefore protects itself by thermally cycling in the  
event of a short-circuit or overload condition. Shorting V5  
to ground disables the thermal shutdown.  
Applications Information  
Programming the LED Current  
The MAX16835 uses a sense resistor across CS+ and  
CS- to set the LED current. The differential sense amplifier  
V
EN  
16  
15  
14  
13  
16  
15  
14  
13  
OUT  
EN  
N.C.  
N.C.  
OUT  
EN  
N.C.  
N.C.  
I
I
LED  
LED  
GND 12  
OUT  
IN  
GND 12  
1
2
3
4
OUT  
IN  
1
2
3
4
D1  
C2  
D1  
C2  
V
V
IN  
IN  
11  
10  
9
11  
V5  
V5  
CS-  
CS+  
MAX16835  
MAX16835  
C1  
C1  
R
R
SENSE  
SENSE  
IN  
IN  
10  
9
CS-  
CS+  
N.C.  
N.C.  
N.C.  
5
N.C.  
6
N.C.  
7
N.C.  
8
N.C.  
5
N.C.  
6
N.C.  
7
N.C.  
8
Figure 1. Pulse Application with V at a Constant Voltage  
IN  
Figure 2. Pulse Application with EN Connected to V  
IN  
Maxim Integrated  
6
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
Typical Operating Circuit  
Chip Information  
PROCESS: BiCMOS  
16  
15  
14  
13  
OUT  
EN  
N.C.  
N.C.  
GND 12  
1
2
3
4
OUT  
IN  
Package Information  
D1  
C2  
For the latest package outline information and land patterns (foot-  
prints), go to www.maximintegrated.ꢁom/paꢁkages. 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.  
V
IN  
11  
10  
9
V5  
CS-  
CS+  
MAX16835  
C1  
R
SENS  
IN  
N.C.  
LAND  
PACKAGE  
TYPE  
PACKAGE  
CODE  
OUTLINE NO.  
21-0140  
N.C.  
5
N.C.  
6
N.C.  
7
N.C.  
8
PATTERN NO.  
90-0073  
16 TQFN  
T1655+3  
Maxim Integrated  
7
MAX16835  
High-Voltage, 350mA, Adjustable Linear  
High-Brightness LED Driver  
Revision History  
REVISION  
NUMBER  
REVISION  
DATE  
PAGES  
CHANGED  
DESCRIPTION  
0
1
2
2/08  
5/08  
Initial release  
1, 2, 8, 9  
1
Updated Ordering Information, Electrical Characteristics, and Package  
Information.  
10/12  
Added automotive qualified part to Ordering Information  
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.  
8
________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000  
© 2012 Maxim Integrated Products, Inc.  
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.  

MAX16835ATE+ CAD模型

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  • MAX16835ATE+ 相关器件

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    MAX16838ATP MAXIM Integrated, 2-Channel, High-Brightness LED Driver with High-Voltage Boost and SEPIC Controller 获取价格
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