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PDF MBI1816 Data sheet ( Hoja de datos )
| Número de pieza | MBI1816 | |
| Descripción | All-Ways-On Constant-Current LED Driver | |
| Fabricantes | Macroblock | |
| Logotipo |  |
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Macroblock
Datasheet
MBI1816
All-Ways-OnTM Constant-Current LED Driver
Features
z 16 constant-current output channels
z Constant output current invariant to load voltage change
z Excellent output current accuracy:
between channels: <±3% (max.), and
between ICs: <±6% (max.)
z Output current adjusted through an external resistor
z Constant output current range per channel: 5-60 mA
z Schmitt trigger input
z 5V supply voltage
z Package Type: “Pb-free & Green” package with thermal pad
Thin Shrink SOP
GGTT:: TTSSSSOOP2P02-107L3--01.6753-0.65
Current Accuracy
Between Channels
Between ICs
< ±3%
< ±6%
Conditions
IOUT = 5 ~ 60 mA
Product Description
MBI1816 is an instant On/Off LED driver for lighting applications and exploits PrecisionDrive™ technology to
enhance its output characteristics. At MBI1816 output stage, sixteen regulated current ports are designed to
provide uniform and constant current sinks for driving LEDs within a large range of VF variations.
MBI1816 provides users 16-channel constant current ports to match LEDs with equal current. Users may adjust the
output current from 5 mA to 60 mA through an external resistor, Rext, which gives users flexibility in controlling the
light intensity of LEDs. In addition, users can precisely adjust LED brightness from 0% to 100% via output enable
( OE ) with Pulse Width Modulation.
Additionally, to ensure the system reliability, MBI1816 is built with Thermal Protection (TP) function and thermal
pad. The TP function protects IC from over temperature (165°C). Also, the thermal pad enhances the power
dissipation. As a result, a large amount of current can be handled safely in one package.
Applications
z Automotive interior lighting
z Channel letter
z Decoration lighting
©Macroblock, Inc. 2009
Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail: [email protected]
- 1 - Jan. 2009, VA.00
1 page  
MBI1816
All-Ways-OnTM High-Power LED Driver
Electrical Characteristics
Characteristic
Supply Voltage
Sustaining Voltage at
OE =High
Output Current
Input Voltage
“H” level
“L” level
Output Leakage Current
Output Current 1
Symbol
VDD
VDS
IOUT
VIH
VIL
IOH
IOUT1
Condition
-
OUT0 ~ OUT15
DC Test Circuit
Ta= -40~85ºC
Ta= -40~85ºC
VDS =17V, OE =High
VDS= 0.6V
Rext= 2.4kΩ
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V
- - 17.0 V
5
0.7×VDD
GND
-
-
-
-
-
-
30.5
60*
VDD
0.3×VDD
0.5
-
mA
V
V
µA
mA
Current Skew 1
dIOUT/IOUT
IOL= 30.5mA
VDS= 0.6V
Rext= 2.4kΩ
-
±1 ±3 %
Output Current 2
IOUT2
VDS= 0.8V
Rext= 1.3kΩ
-
56
- mA
Current Skew 2
dIOUT/IOUT
IOL= 56mA
VDS= 0.8V
Rext= 1.3kΩ
-
±1 ±3 %
Regulation of Output
Current vs. Sustaining
Voltage
Regulation of Output
Current vs. Supply Voltage
%/dVDS VDS within 1.0V and 3.0V
%/dVDD VDD within 4.5V and 5.5V
- ±0.1 - % / V
- ±1 - % / V
OE Pull-up Resistor
Threshold Junction
Temperature of Thermal
Shutdown
RIN(up)
Tx
OE
When Tj approaches Tx and
OUT is shut off.
250 500 800 KΩ
- 165 -
°C
IDD(off) 1 Rext= Open, OUT0 ~ OUT15 = Off
-
5
9
Supply
Current
“OFF”
IDD(off) 2
IDD(off) 3
Rext= 2.4kΩ, OUT0 ~ OUT15 = Off
Rext= 1.3kΩ, OUT0 ~ OUT15 = Off
-
-
6 10
8 12 mA
“ON”
IDD(on) 1
IDD(on) 2
Rext= 2.4kΩ, OUT0 ~ OUT15 = On
Rext= 1.3kΩ, OUT0 ~ OUT15 = On
-
-
6 10
7 10
* Each output current, IOUT, can be driven up to 90mA, but the total output current should be smaller than 1A.
Test Circuit for Electrical Characteristics
Function
Generator
Logic input
waveform
VIH
VIL
C1
IDD VDD
VDD OUT0
OE
R-EXT
OUT15
GND
IR-EXT
Rext
IOUT
VDS
C2
Figure 2
- 5 - Jan 2009, VA.00
5 Page 
MBI1816
All-Ways-OnTM High-Power LED Driver
Package Power Dissipation (PD)
The maximum power dissipation, PD(max) = (Tj,max – Ta) / Rth(j-a), decreases as the ambient temperature increases.
Max. Power Dissipation at Various Ambient Temperature
1
0.8 Type: TSSOP20(GT); Rth(j-a)=117(°C/W)*
0.6
0.4
0.2
Safe Operation Area
0
0 25 50 75 100
Ambient Temperature (°C)
Figure 7
The maximum allowable package power dissipation is determined as PD(max) = (Tj,max – Ta) / Rth(j-a). When 16
output channels are turned on simultaneously, the actual package power dissipation is PD(act) = (IDD x VDD) + (IOUT x
Duty x VDS x 16). Therefore, to keep PD(act) ≤ PD(max), the allowable maximum output current as a function of duty
cycle is:
IOUT = { [(Tj – Ta) / Rth(j-a) ] – (IDD x VDD) } / VDS / Duty / 16,
where Tj = 125°C;
Duty= tON / T;
tON: the time of LEDs turning on; T: OE signal period
tON
OE
T
*Note: The empirical thermal resistor Rth(j-a) =117 °C/W; it is based on the following structure.
Copper foil
L2 L1
W1
W2
The PCB area L2xW2 is 4 times of the
IC’s area L1xW1.
The thickness of the PCB is 1.6 mm,
copper foil 1 Oz. The thermal pad on the
IC’s bottom has to be mounted on the
copper foil.
- 11 -
Jan 2009, VA.00
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MBI1816.PDF ] | |
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