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Products manufacturer：B&B Laboratory Corp.
Product name：LED Bulb lamp Constant current Driving power
Model specifications：LT-301P
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1. General description
LT-301P is specially designed for the LED bulb lamp.It is a compact, high
efficiency, high precision, full voltage constant-current driving power, it uses a new
isolation circuit topology design, the use of the excellent performance of the components,
low noise, energy saving, environmental protection, long life etc…
2. Product performance
This product is suitable for 3 ~ 5W bulb lamp. The driving power has the following
protection function:
A ) open circuit protection: when the output terminal has no load but input is
normal,the product will not be damaged;
B ) short circuit protection: if the output is abnormal, causing the output positive
and negative shorted, this product will start short circuit protection function, not because
of the abnormal event cause the permanent injury;
C ) overload protection : This product is constant-current, if load in the design
range, the output current is constant, when the output load is beyond the scope of design,
circuit will go into the protection state, may frequent start or no output;
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3. Electrical Parameters
Design
Symbols
Output power
Pout
3～5W
W
5%
Input voltage
Vin
90～265
V
——
Output current
Iout
330
mA
5%
Can be adjusted according to
customer requirements
Output voltage
Vout
9～15
V
——
Related with
the actual load
Top
-40～85
℃
——
Hop
20～98
%RH
——
Working
temperature
Work humidity
value
Unit
Error
Design project
Note
Range
Related with
the actual load
4. Test parameters
NO.
Voltage
frequency
(Hz)
Load
(W)
Vac
mA
W
V
A
W
1
50
3
90.540
80.902
4.52
9.14
0.33
2
60
3
90.540
81.560
4.513
9.14
3
50
3
110.54
69.888
4.484
4
60
3
110.54
70.020
5
50
3
221.04
6
60
3
7
50
8
60
Input
Output
PFC
Efficiency
(%)
3.0162
0.6170
0.667
0.33
3.0162
0.6111
0.668
9.26
0.33
3.0558
0.5806
0.681
4.486
9.25
0.33
3.0525
0.5713
0.68
43.968
4.4114
9.23
0.33
3.0459
0.4533
0.69
221.03
44.48
4.409
9.22
0.33
3.0426
0.4491
0.69
3
266.14
39.410
4.431
9.23
0.32
2.9536
0.4217
0.667
3
266.14
39.324
4.409
9.20
0.32
2.944
0.4219
0.668
5.Appearance and Dimensions
Dimensions：L*W*H=34mm*19mm*10mm
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6.Test Equipment
Type
Manufacturers
Model
Oscilloscope
TEK
TDS2024B
Digital Multimeter
VICTOR
VC890C+
Electric Parameters Tester
Chroma
66202
Voltage Regulator
Chroma
662003
The AC power
supply device
GWINSTEK
APS-9501
EMC Tester
Volnic
EMC200ASingle-phase simulation
power network
EMC Tester
Volnic
EMC300A receiver
Constant temperature and
humidity box
ShenZhen YuTAI
YGDSJ800-40
7.Conducted EMI
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8.Aging Test Report
Temperature
Humidity
Test time
Test results
25℃
30%RH
4H
Pass
80℃
50%RH
24H
Pass
9. Summary of test results
Model
Input basic
parameters
Output basic
parameters
Key indicators
LT-301P
Input voltage range
AC85~265V
Rated power input
≤5W
Input frequency
47~63HZ
Output voltage (load)
DC9-15V
Maximum output current
330mA±5%
Maximum output power
5W
Work efficiency (80% load)
≥68%(Rated voltage AC220V)
Power factor PFC (AC220V)
≥0.45(Rated voltage AC220V)
Temperature (80% load )
≤30℃
Working temperature
-25℃~ +60℃
Storage temperature
-40～80℃
ripple（80% load）
Output ripple ≤ 300mV
Total harmonic（THD）
≤18%
Insulation intensity
Input-output AC/1.5KV/5mA.1min
Protection function
Short circuit, overload
automatic protection
Exterior size, material and color
36mm(L )×19mm(W)×18mm(H)
FR-4 Glass fiber board
Single weight
Single weight 10g
Lead standard
UL1015，20# Electronic line，Outside
leakage 20CM
Authentication
Connection mode 1W Lamp bead 3~5 string
Application
Used in indoor lighting
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