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PDF AL1677 Data sheet ( Hoja de datos )
| Número de pieza | AL1677 | |
| Descripción | HIGH EFFICIENCY AND ACCURACY LED DRIVER CONVERTER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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AL1677
UNIVERSAL, HIGH EFFICIENCY AND ACCURACY LED DRIVER CONVERTER
Description
The AL1677 is a universal AC-input (85~277 VAC), high-efficiency and
high-accuracy Buck LED-driver converter. The AL1677 topology
provides accurate constant current (CC) line and load regulation,
operating at boundary conduction mode (BCM) to ease in EMI/EMC
qualification and testing to meet the latest regulatory laws.
The AL1677 system removes the auxiliary winding and external high-
voltage MOSFET with few external components to create a low bill of
material (BOM) cost solution. The AL1677 has rich protection features
to enhance system safety and reliability. With thermal foldback
function, the AL1677 can reduce output current when the driver’s
temperature is higher than the setting value.
Pin Assignments
(Top View)
GND 1
ROVP 2
NC 3
VCC 4
8 CS
7 CS
6D
5D
SO-8
The AL1677 is available in SO-8 package.
Features
> 90% Efficiency
Valley Detection to Minimize Switching Loss
Universal 85 to 277 VAC Input Range
Internal MOSFET up to 500V
Tight Current Sense Tolerance : ± 3%
Low Startup Current: 170µA
Low Operation Current: 100µA (Static)
Standard Inductor (no auxiliary winding)
Internal Protections
- Undervoltage Lockout (UVLO)
- Leading-Edge Blanking (LEB)
- Cycle-by-cycle Overcurrent Protection(OCP)
- Output Open/Short Protection(OVP/OSP)
- Open-Load and Reload Detection
- Thermal Foldback Function(TFP)
- Over-Temperature Protection(OTP)
SO-8 Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Retrofit LED Lamps
High Voltage DC-DC LED Driver
General Purpose Constant Current Source
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.
AL1677
Document number: DS37526 Rev. 1 - 2
1 of 13
www.diodes.com
November 2015
© Diodes Incorporated
1 page  
Performance Characteristics (Note 9)
Start-up Voltage vs. Ambient Temperature
16.0
15.5
15.0
14.5
14.0
13.5
13.0
12.5
12.-040
-20
0 20 40 60 80
Ambient Temperature (oC)
100 120
Minimal Operating Voltage vs. Ambient Temperature
AL1677
Start-up Current vs. Ambient Temperature
180
170
160
150
140
130
120
-40
-20
0 20 40 60 80
Ambient Temperature (oC)
100 120
Operating Current vs. Ambient Temperature
10.0
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.-040
-20
0 20 40 60 80
Ambient Temperature (oC)
100 120
VCS Reference vs. Ambient Temperature
0.50
0.45
0.40
0.35
0.30
0.25
0.20
-40
-20
0 20 40 60 80
Ambient Temperature (oC)
100 120
140
130
120
110
100
90
80
7-040 -20
0 20 40 60 80
Ambient Temperature (oC)
100 120
VROVP Reference vs. Ambient Temperature
0.60
0.55
0.50
0.45
0.40
0.35
0.3-040
-20
0 20 40 60 80
Ambient Temperature (oC)
100 120
AL1677
Document number: DS37526 Rev. 1 - 2
5 of 13
www.diodes.com
November 2015
© Diodes Incorporated
5 Page 
Ordering Information
AL1677–XX X XX–13
AL1677
Current Option
05 : 0.5A
08 : 0.8A
10 : 1.0A
20 : 2.0A
Mosfet Voltage
B: 500V
Package
S : SO-8
Packing
13 :13" Tape & Reel
Part Number
AL1677-05BS-13
AL1677-08BS-13
AL1677-10BS-13
AL1677-20BS-13
Package Code
S
S
S
S
Package
SO-8
SO-8
SO-8
SO-8
13” Tape and Reel
Quantity
Part Number Suffix
4,000/Tape & Reel
-13
4,000/Tape & Reel
-13
4,000/Tape & Reel
-13
4,000/Tape & Reel
-13
Marking Information
(Top View)
8765
Logo
Part Number
1677-05B for 0.5A/500V
1677-08B for 0.8A/500V
1677-10B for 1.0A/500V
1677-20B for 2.0A/500V
1677- ZZZ
YY WW X X
1 234
YY : Year : 15,16,17 ~
WW : Week : 01~52; 52
represents 52 and 53 week
X X : Internal Code
AL1677
Document number: DS37526 Rev. 1 - 2
11 of 13
www.diodes.com
November 2015
© Diodes Incorporated
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AL1677.PDF ] | |
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