AL8806

AL8806
HIGH EFFICIENCY 36V 1.5A BUCK LED DRIVER
Description
Pin Assignments
The AL8806 is a step-down DC/DC converter designed to drive LEDs
with a constant current. The device can drive up to 8 LEDs,
depending on the forward voltage of the LEDs, in series from a
SET
GND
GND
CTRL
voltage source of 6V to 36V. The AL8806 switches at frequencies up
to 1MHz. This allows the use of small size external components,
hence minimizing the PCB area needed.
1
2
3
4
Maximum output current of AL8806 is set via an external resistor
connected between the VIN and SET input pins. Dimming is achieved
AL8806
8
7
6
5
VIN
N/C
SW
SW
MSOP-8EP
by applying either a DC voltage or a PWM signal at the CTRL input
pin. An input voltage of 0.4V or lower at CTRL switches off the output
MOSFET simplifying PWM dimming.
Features
Applications

LED driving current up to 1.5A

High Power MR16 Lamps

Better than 5% accuracy

General Illumination Lamps

High efficiency up to 98%

Multi-Die LED Driver

Operating input voltage from 6V to 36V

High switching frequency up to 1MHz

PWM/DC input for dimming control

Built-in output open-circuit protection

MSOP-8EP: Available in “Green” Molding Compound (No Br,
Sb) with lead Free Finish/ RoHS Compliant

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
DFLS230LH
D1
RSET
0R089
Document number: DS35144 Rev. 5 - 2
SET
VIN
450µF
D4
AL8806
C1
C2
AL8806
SW
12VAC
DFLS230LH
x4
GND
~
D3
CTRL
D2
Multidie
LED
1µF
33µH L1
D5
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AL8806
Pin Descriptions
Pin
Name
SW
GND
Pin Number
Function
MSOP-8EP
5, 6
Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI.
2, 3
GND Pin
CTRL
4
SET
1
VIN
8
EP
EP
N/C
7
Dimming and On/Off Control Input.
 Leave floating for normal operation.
(VCTRL = VREF = 2.5V giving nominal average output current IOUTnom = 0.1/RS)
 Drive to voltage below 0.4V to turn off output current
 Drive with DC voltage (0.5V < VCTRL < 2.5V) to adjust output current from 20% to 100% of IOUTnom
 A PWM signal (low level ≤ 0.4V and high level > 2.6; transition times less than 1us) allows the output current to be
adjusted below the level set by the resistor connected to SET input pin.
Set Nominal Output Current Pin. Configure the output current of the device.
Input Supply Pin. Must be locally decoupled to GND with > 2.2µF X7R ceramic capacitor – see applications section for
more information.
Exposed pad:
Connect to GND and thermal mass for enhanced thermal impedance. It should not be used as electrical ground
conduction path.
no connection
Functional Block Diagram
AL8806
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AL8806
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD MM
Parameter
Human Body Model ESD Protection
Machine Model ESD Protection
Ratings
2.5
200
Unit
kV
V
VIN
Continuous VIN pin voltage relative to GND
-0.3 to +40
V
VSW
SW voltage relative to GND
-0.3 to +40
V
CTRL pin input voltage
-0.3 to +6
V
VCTRL
ISW-RMS
ISW-PK
DC or RMS switch current
Peak switch current (<10%)
1.65
A
3
A
Junction Temperature
150
°C
TLEAD
Lead Temperature Soldering
300
°C
TST
Storage Temperature Range
-65 to +150
°C
TJ
Caution:
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling
and transporting these devices.
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol
Min
Max
Operating Input Voltage relative to GND
6.0
36
V
VCTRLH
Voltage High for PWM dimming relative to GND
2.6
5.5
V
VCTRLDC
Voltage range for 20% to 100% DC dimming relative to GND
0.5
2.5
V
0
0.4
V
VIN
VCTRLL
Parameter
Voltage Low for PWM dimming relative to GND
ISW
DC or RMS switch current
fOSC
Switching Frequency
Junction Temperature Range
TJ
-40
Unit
1.5
A
1
MHz
+125
°C
Electrical Characteristics (@VIN = 12V, TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Conditions
VINSU
Internal regulator start up threshold
VIN rising
VINSH
Internal regulator hysteresis threshold
VIN falling
IQ
Quiescent current
Output not switching (Note 4)
IS
Input supply Current
CTRL pin floating f = 250kHz
Set current Threshold Voltage
VCTRL ≥ 2.6V or floating.
VTH
Set threshold hysteresis
VTH-H
Min
Typ
100
95
mV
µA
mA
100
105
±20
VSET = VIN-0.1
16
RCTRL
50
VREF
Internal Reference Voltage
ISW = 1A
Switch leakage current
VIN =36V
0.18
JA
Thermal Resistance Junction-to-Ambient (Note 5)
MSOP-8EP (Note 6)
69
Thermal Resistance Junction-to-Case (Note 5)
MSOP-8EP (Note 6)
4.3
mV
mV
22
µA
kΩ
2.5
On Resistance of SW MOSFET
JC
Notes:
300
5
Referred to internal reference
ISW_Leakage
V
1.8
SET pin input current
RDS(on)
Unit
5.9
350
CTRL pin input resistance
ISET
Max
V
0.35
Ω
0.5
μA
C/W
4. AL8806 does not have a low power standby mode but current consumption is reduced when output switch is inhibited: VSENSE = 0V. Parameter is
tested with VCTRL ≤ 2.5V
5. Dominant conduction path via exposed pad. Refer to figure 5 for the device derating curve.
6. Measured on an FR4 51x51mm PCB with 2oz copper standing in still air with minimum recommended pad layout on top layer and thermal vias to
bottom layer maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed.
AL8806
Document number: DS35144 Rev. 5 - 2
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AL8806
Typical Performance Characteristics
900
400
L = 33µH
V CTRL = 0V
V SET = V IN
TA = 25 °C
350
Frequency (kHz)
250
TA = 25°C
700
300
IIN (µA)
V IN = 12V
1 LED
RSET = 150m 
800
200
150
100
600
L = 68µH
500
400
300
200
L = 100µH
50
0
100
0
1.6
1.4
5
0
10
15
20
25
30
VI N (V)
Supply Current (not switching) vs. Input Current
60
3
4
VCTR L (V)
Switching Frequency vs. VCT RL
5
TA = 25 C
40
RSET = 100m
ICT RL (µA)
LED CURRENT (A)
1.2
0.8
2
V SET = V IN = 12V
L =68µH
1
1
80
RSET = 68m
TA = 25°C
0
RSET = 150m
20
0
0.6
-20
0.4
-40
0.2
0
-60
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
V CTRL (V)
ICTRL vs VCTRL
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
CTRL VOLTAGE (V)
LED Current vs. VCTRL
2.52
3
V CTRL = Open
V SET = V IN = 12V
2.5
2.51
V CTRL (V)
V CTRL (V)
2
1.5
1
V CTRL = Open
V SET = V IN
2.49
TA = 25 C
0.5
2.50
0
0
5
10
15
20
VIN (V)
V CTRL vs. Input Voltage
(CTRL pin open circuit)
AL8806
Document number: DS35144 Rev. 5 - 2
25
30
2.48
-40
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10
35
60
85
Ambient Temperature (°C)
V CTRL vs. Temperature
110
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AL8806
Typical Performance Characteristics (cont.)
0.9
180
0.8
160
3.5
0.7
140
3.0
0.6
4.5
1 LED
R SET = 150m 
LED Current Error (%)
4.0
L = 68µH
0.5
2.5
LED Current Error
0.4
2.0
ILED
1.5
1.0
RDS(ON) (m)
200
V IN = 12V
LED Current (A)
1
5.0
120
100
0.3
60
0.2
40
0.0
0%
0
0
100%
20%
40%
60%
80%
PWM Duty Cycle
ILED vs. PWM Duty Cycle
VCTRL = Open
VSET = VIN 12V
20
0.1
0.5
80
260
130
240
125
TA = 25C
0
5
10
15
20
25
VIN (V)
RDS(ON) vs. Input Voltage
30
18
16
V SENSE
120
14
220
V SENSE (mV)
RDS(ON) (m)
V SW
180
160
110
10
105
8
100
6
4
95
140
RSET = 150m 
L = 68µH
V IN = 12V
1 LED Load
90
120
VCTRL = Open
VSET = VIN 12V
100
-40
-15
10
35
60
85
AMBIENT TEMPERATURE (°C)
SW RDS(ON) vs. Temperature
100%
85
110
80
V SW
12
115
200
2
0
-2
0
2
4
6
Time (µs)
SW Output Switching Characteristics
8
L = 33µH
RSET = 150m 
90%
TA = 25 C
2 LED
80%
Duty Cycle
70%
60%
50%
40%
30%
20%
10%
0%
6
9
12
15
18
21
24
Input Voltage (V)
Duty Cycle vs. Input Voltage
AL8806
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AL8806
Typical Operating Performance Characteristics (cont.)
1.5A Nominal LED Current
1.0A Nominal LED Current
10%
10%
8%
2 LEDs
6%
6 LEDs 7 LEDs
7 LEDs 8 LEDs
3 LEDs
6%
2 LEDs
5 LEDs
4%
DEVIATION
4%
% ERROR
8%
6 LEDs
4 LEDs
2%
0%
1 LED
-2%
-4%
3 LEDs
2%
1 LED
0%
-2%
-4%
-6%
-6%
TA = 25°C
L = 33µH
RS = 66.67m
-8%
-10%
6
9
12 15 18 21 24
INPUT VOLTAGE (V)
27
30
-8%
TA = 25°C
L = 33µH
RS = 100m
-10%
6
9
12 15 18 21 24
INPUT VOLTAGE (V)
27
30
700
700
TA = 25°C
L = 33µH
RS = 66.67m
600
SWITCHING FREQUENCY (kHz)
SWITCHING FREQUENCY (kHZ)
8 LEDs
5 LEDs
4 LEDs
500
400
300
200
1 LED
100
6
9
12
15 18 21 24
INPUT VOLTAGE (V)
27
400
300
200
1 LED
100
0
6
30
100%
500
2 LEDs 3 LEDs
4 LEDs 5 LEDs 6 LEDs
2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 7 LEDs 8 LEDs
0
T A = 25°C
L = 33µH
RS = 100m
600
9
8 LEDs
7 LEDs
12 15 18 21 24
INPUT VOLTAGE (V)
100%
4 LEDs
5 LEDs
6 LEDs
7 LEDs 8 LEDs
4 LEDs
7 LEDs
5 LEDs 6 LEDs
27
30
8 LEDs
3 LEDs
95%
95%
2 LEDs
90%
EFFICIENCY
3 LEDs
2 LEDs
85%
90%
1 LED
85%
1 LED
80%
80%
TA = 25°C
L = 33µH
RS = 100m
TA = 25°C
L = 33µH
RS = 66.67m
75%
6
9
12 15 18 21 24
INPUT VOLTAGE (V)
AL8806
Document number: DS35144 Rev. 5 - 2
75%
27
30
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9
12 15 18 21 24
INPUT VOLTAGE (V)
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AL8806
Application Information
AL8806 Operation
In normal operation, when voltage is applied at VIN, the AL8806 internal switch is turned on. Current starts to flow through sense resistor RSET,
inductor L1, and the LEDs. The current ramps up linearly, and the ramp rate is determined by the input voltage VIN and the inductor L1.
DFLS230LH
D1
RSET
12V
Multidie
LED
1µF
SW
4.7µF 100nF
C3
AL8806
GND
C2
CTRL
C1
SET
VIN
0R082
33µH
GND
L1
Figure 1 Typical Application Circuit
This rising current produces a voltage ramp across RSET. The internal circuit of the AL8806 senses the voltage across RSET and applies a
proportional voltage to the input of the internal comparator.
When this voltage reaches an internally set upper threshold, the internal switch is turned off. The inductor current continues to flow through RSET,
L1, the LEDs and the schottky diode D1, and back to the supply rail, but it decays, with the rate of decay determined by the forward voltage drop of
the LEDs and the schottky diode.
This decaying current produces a falling voltage at R1, which is sensed by the AL8806. A voltage proportional to the sense voltage across RSET is
applied at the input of the internal comparator. When this voltage falls to the internally set lower threshold, the internal switch is turned on again.
This switch-on-and-off cycle continues to provide the average LED current set by the sense resistor RSET.
LED Current Control
The LED current is controlled by the resistor RSET in Figure 1.
Connected between VIN and SET the nominal average output current in the LED(s) is defined as:
ILED 
VTHD
RSET
If the CTRL pin is driven by an external voltage (higher than 0.4V and lower than 2.5V), the average LED current is:
ILED 
VCTRL VTHD
VREF R SET
For example for a desired LED current of 1.33A and a default voltage VCTRL=2.5V the resulting resistor is:
R SET 
VTHD VCTRL
0 . 1 2 .5

 75m
ILED VREF
1.33 2.5
DC Dimming
The CTRL pin can be driven by an external DC voltage (VCTRL), to adjust the output current to a value below the nominal average value defined by
RSET. The LED current decreases linearly with the CTRL voltage when 0.5V ≤ VCTRL ≤ 2.5V, as shown on page 4 for 4 different current levels.
Note that 100% brightness setting corresponds to VCTRL = VREF, nominally 2.5V. For any voltage applied on the CTRL pin that is higher than VREF,
the device will not overdrive the LED current and will still set the current according to the equation VCTRL = VREF.
When the CTRL voltage falls below the threshold, 0.4V, the output switch is turned off which allows PWM dimming.
AL8806
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Application Information (cont.)
PWM Dimming
LED current can be adjusted digitally, by applying a low frequency Pulse Width Modulated (PWM) logic signal to the CTRL pin to turn the device on
and off. This will produce an average output current proportional to the duty cycle of the control signal. In particular, a PWM signal with a max
resolution of 10bit can be applied to the CTRL pin to change the output current to a value below the nominal average value set by resistor RSET. To
achieve this resolution the PWM frequency has to be lower than 500Hz, however higher dimming frequencies can be used - at the expense of
dimming dynamic range and accuracy.
Typically, for a PWM frequency of 500Hz the accuracy is better than 1% for PWM ranging from 1% to 100%.
700
LED current [mA]
600
500
400
300
200
100
0
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
7%
8%
9%
10%
PWM dimming [%]
Figure 2 PWM Dimming at 500Hz
70
LED current [mA]
60
50
40
30
20
10
0
0%
1%
2%
3%
4%
5%
6%
PWM dimming [%]
Figure 3 Low Duty Cycle PWM Dimming at 500Hz
The PWM pin is designed to be driven by both 3.3V and 5V logic levels directly from a logic output with either an open drain output or push-pull
output stage.
AL8806
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Application Information (cont.)
Soft Start
The AL8806 does not have in-built soft-start action – this provides very fast turn off of the output the stage improving PWM dimming accuracy;
nonetheless, adding an external capacitor from the CTRL pin to ground will provide a soft-start delay. This is achieved by increasing the time taken
for the CTRL voltage to rise to the turn-on threshold and by slowing down the rate of rise of the control voltage at the input of the comparator.
Adding a capacitor increases the time taken for the output to reach 90% of its final value, this delay is 0.1ms/nF, but will impact on the PWM
dimming accuracy depending on the delay introduced.
Figure 4 Soft Start with 22nF Capacitor on CTRL Pin (VIN = 36V, ILED = 667mA, 1 LED)
Reducing Output Ripple
Peak to peak ripple current in the LED(s) can be reduced, if required, by shunting a capacitor C2 across the LED(s) as shown already in the circuit
schematic.
A value of 1μF will reduce the supply ripple current by a factor three (approx.). Proportionally lower ripple can be achieved with higher capacitor
values. Note that the capacitor will not affect operating frequency or efficiency, but it will increase
start-up delay, by reducing the rate of rise of
LED voltage. By adding this capacitor the current waveform through the LED(s) changes from a triangular ramp to a more sinusoidal version
without altering the mean current value.
AL8806
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AL8806
Application Information (cont.)
Capacitor Selection
The small size of ceramic capacitors makes them ideal for AL8806 applications. X5R and X7R types are recommended because they retain their
capacitance over wider voltage and temperature ranges than other types such as Z5U.
A 2.2μF input capacitor is sufficient for most intended applications of AL8806; however a 4.7μF input capacitor is suggested for input voltages
approaching 30V.
Diode Selection
For maximum efficiency and performance, the rectifier (D1) should be a fast low capacitance Schottky diode with low reverse leakage at the
maximum operating voltage and temperature. The Schottky diode also provides better efficiency than silicon PN diodes, due to a combination of
lower forward voltage and reduced recovery time.
It is important to select parts with a peak current rating above the peak coil current and a continuous current rating higher than the maximum output
load current. In particular, it is recommended to have a diode voltage rating at least 15% higher than the operating voltage to ensure safe operation
during the switching and a current rating at least 10% higher than the average diode current. The power rating is verified by calculating the power
loss through the diode.
Schottky diodes, e.g. B240 or B140, with their low forward voltage drop and fast reverse recovery, are the ideal choice for AL8806 applications.
Thermal and Layout Considerations
For continuous conduction mode of operation, the absolute maximum junction temperature must not be exceeded. The maximum power dissipation
depends on several factors: the thermal resistance of the IC package JA, PCB layout, airflow surrounding the IC, and difference between junction
and ambient temperature.
The maximum power dissipation can be calculated using the following formula:
where
TJ(MAX) is the maximum operating junction temperature,
TA is the ambient temperature, and
JA is the junction to ambient thermal resistance.
The recommended maximum operating junction temperature, TJ, is 125°C and so maximum ambient temperature is determined by the AL8806’s
junction to ambient thermal resistance, JA. To support high LED drive at higher ambient temperatures the AL8806 has been packaged in thermally
enhanced MSOP-8EP package.
JA, is layout dependent and the AL8806’s JA in MSOP-8EP on a
1600
approximately 69°C/W.
Therefore the maximum power dissipation at TA = +25°C is:
PD(MAX ) 
125C  25C  1.45 W
69C / W
Figure 5, shows the power derating of the AL8806 on an FR4
Power dissipation (mW)
51 x 51mm double layer PCB with 2oz copper standing in still air is
1400
MSOP-8EP
1200
1000
800
600
400
200
51x51mm PCB with 2oz copper standing in still air.
0
As the ambient temperature increases and/or the PCB area reduces
the maximum allowable power dissipated by the AL8806 will
decrease.
AL8806
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5 20 35 50 65 80
Ambient temperature (°C)
95 110 125
Figure 5 Derating Curve
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AL8806
Application Information (cont.)
PCB Layout
When laying out the PCB for the AL8806 the following should be observed:
1.
The decoupling capacitor C1 has to be placed as close as possible to VIN
2.
The sense resistor, RSET, has to be placed as close as possible to VIN and SET
3.
The anode of the freewheel diode (D1), the SW pin and the inductor have to be placed as close as possible to each other to avoid ringing.
SET
D1
C2
SW
GND
C1
AL8806
CTRL
To avoid
radiated EMI
keep dashed
tracks as
short as
possible
VIN
RSET
L1
Figure 6 PCB Layout
The AL8806 has two evaluation boards available on request (AL8806EV4 and AL8806EV6). Information can be found on the Diodes website and
from a Diodes’ sales representative.
Application Example
A typical application example for the AL8806 is the MR16 lamp; which normally operate from 12VDC or 12VAC supplies, using conventional
electromagnetic transformers or electronic transformers.
As a replacement for MR16 halogen lamps, LED lamps offer a more energy efficient solution - radiating no heat and no Ultra Violet light. The low
thermal impedance of the AL8806 and its 1.5A switch capability allows it drive some of the latest multi-die LEDs; which increases the lamp’s
luminance.
This application example is intended to fit into the base connector space of an MR16 style LED lamp. The design has been optimized for part count
and thermal performance for a multi-die LED in the Lens section as well as EMI conformance.
Figure 7 MR16 Schematic
AL8806
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Application Information (cont.)
Application Example (cont.)
The output of the 12V transformer is fed into the bridge rectifier, comprising of D2, D3, D4 and D5. C10 offers an optional EMI filtering at the input.
(see figure 9)
Capacitor, CBULK, (capacitors C1 and C2 on the PCB and BOM are multiple components to reduce size) forms the bulk reservoir capacitance used to sustain operation of the device during the low part of the rectified AC wave. In the case of a system driving two LEDs at 1.1A, one 470µF
plus 47µF capacitors are required.
Capacitors C3 and C9 provide local decoupling for the AL8806 and for the schottky freewheeling diode, D1. It is important that C3 is as close as
possible to the AL8806’s VIN pin and that C9 is as close to the VIN and shottky diode as possible, as reflected in the layout shown below in figure 8.
The LED current is determined by the total resistance between the VIN and SET pins (R1 and R2 in figures 7 (schematic) and 8 (top PCB) and
BOM).
C4 decouples the LED connections, again to minimize EMI, as well as smoothing the current.
D1 operates as the freewheeling diode, providing a current path for the LED current when the power switch at SW pin is off.
Capacitors C5 to C9, 1.5nF have been added to improve the overall EMI performance. C5 is connected across the Supply pins to reduce radiation
via the wiring. C6 and C7 also assist the reduction of EMI via the wiring. C8 snubs high frequency radiation from the harmonics in the switching
regulator.
A large number of vias have been used to improve the grounding effect throughout the PCB to improve the evaluation board’s EMI performance.
Figure 8 AL8806EV6 evaluation board (Top)
AL8806
Document number: DS35144 Rev. 5 - 2
Figure 9 AL8806EV6 evaluation board (Bottom)
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AL8806
Application Information (cont.)
AL8806EV6 BOM
Count
Designator
Description
Package
Manufacturer
Part Number
Radial,
10 x 12.5mm
Rubycon
25ZLH470M
1
C1
Capacitor, 470uF, 25V Aluminium Electrolytic
1
C2
Capacitor, 4.7µF 10% 50V X7R
1210
Kemet
C1210X475K5RAC
3
C3, C9, C10
Capacitor, 100nF 10% 50V X7R
0805
Kemet
NIC
C1210X475K5RAC
NMC0805X7R104K50TRPF
1
C4
Capacitor, 100nF 10% 50V X7R
1206
Kemet
NIC
C1206104K5RAC7800
NMC1206X7R104K50TRPF
4
C5 to C8
Capacitor, 1.5nF 10% 50V or 100V, COG
0805
generic
1
L1
Inductor, shielded, 15µH 20%
6.6 x 6.6mm
Coilcraft
NIC
Würth
MSS7341-153ML
NPIS64D150MTRF
744777115
1
L2
Inductor, ferrite bead, 6A, 30ohms @100MHz
0805
TDK
MPZ2012S300A
1
R1
Resistor, 0.15ohms 1% 250ppm 125mW
0805
generic
1
R2
Resistor, 0.2ohms 1% 250ppm 125mW
0805
generic
1
D1
Diode, schottky, 36V 2A DFLS230 (alternatives:
DFLS230L or LH)
PowerDi123
Diodes Inc
DFLS230-7
4
D2 to D5
Diode, Super Barrier Rectifier, 36V 2A SBR2U30
PowerDi123
Diodes Inc
SBR2U30P1-7
1
U1
IC, LED Driver, AL8806
MSOP-8EP
Diodes Inc
AL8806MP8-13
The AL8806 guarantees high level of performance both with 12VAC and 12VDC power supply.
Ordering Information
AL8806 XXX - XX
Package
Packing
MP8 : MSOP-8EP
13 : 13” Tape & Reel
Part Number
Package Code
Packaging
AL8806MP8-13
MP8
MSOP-8EP
AL8806
Document number: DS35144 Rev. 5 - 2
Tape and Reel
Quantity
2500/Tape & Reel
13 of 15
www.diodes.com
Part Number Suffix
-13
July 2013
© Diodes Incorporated
AL8806
Marking Information
MSOP-8EP
Part Number
AL8806MP8-13
Package
MSOP-8EP
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
MSOP-8EP
Dim Min Max Typ
A
1.10
A1
0.05 0.15 0.10
A2
0.75 0.95 0.86
A3
0.29 0.49 0.39
b
0.22 0.38 0.30
c
0.08 0.23 0.15
D
2.90 3.10 3.00
D1
1.60 2.00 1.80
E
4.70 5.10 4.90
E1
2.90 3.10 3.00
E2
1.30 1.70 1.50
E3
2.85 3.05 2.95
e
0.65
L
0.40 0.80 0.60
a
0°
8°
4°
x
0.750
y
0.750
All Dimensions in mm
D
4X
10
°
0.25
D1
x
E
E2
Gauge Plane
Seating Plane
a
y
1
4X
10
°
8Xb
e
Detail C
E3
A1
L
A3
c
A2
A
D
E1
See Detail C
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
X
C
Y
G
Y2
Dimensions
C
G
X
X1
Y
Y1
Y2
Y1
X1
AL8806
Document number: DS35144 Rev. 5 - 2
14 of 15
www.diodes.com
Value
(in mm)
0.650
0.450
0.450
2.000
1.350
1.700
5.300
July 2013
© Diodes Incorporated
AL8806
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2013, Diodes Incorporated
www.diodes.com
AL8806
Document number: DS35144 Rev. 5 - 2
15 of 15
www.diodes.com
July 2013
© Diodes Incorporated
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