BQ LF Series

BQ LF- Series
8 To 10 Watt Isolated DC-DC Converter
Single Output
1 . Features
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Wide 2 : 1 Input Range
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Low Ripple And Noise
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Input / Output Isolation 1.5K Vdc
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100% Burn-In
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Input π - Filter
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Custom Design Available
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Net Weight: 14.8 g
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RoHS Converter Certified By SGS
Typical
2 . Single Output Selection Guide
(Specifications typical at Ta= +25℃, Nominal input voltage, Rated output current unless otherwise noted)
Model No.
Input Output Output Input Current Input Current
Voltage Voltage Current
@No Load @Max. Load
(Vdc)
(Vdc) (mA) Max.
(mA) Typ.
(mA) Typ.
Output
Load
Efficiency
Ripple
Regulation
(%)Typ.
(mV) Max. (%)Max.
1) 8 W Single Output Series
BQ-242R5S8M LF
18~36
2.5
3000
12
450
100
± 0.5
74
BQ-482R5S8M LF
36~75
2.5
3000
10
220
100
± 0.5
74
3.3
3000
10
520
100
± 0.5
80
5
2000
10
510
100
± 0.5
81
BQ-2412S 10M LF
12
833
15
496
100
± 0.5
84
BQ-483R3S10M LF
3.3
3000
10
260
100
± 0.5
78
5
2000
10
250
100
± 0.5
83
12
833
10
254
100
± 0.5
82
2) 10 W Single Output Series
BQ-243R3S10M LF
BQ-2405S 10M LF
BQ-4805S 10M LF
18~36
36~75
BQ-4812S 10M LF
Notes :
1. Load regulation is for output current change from 0% to 100% Max. Load.
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BQ LF- Series
8 To 10 Watt Isolated DC-DC Converter
Single Output
3 . Absolute Maximum Ratings
(Exceeding these values may damage the module. These are not continuous operating ratings)
Parameter
Input Absolute Voltage Range
Output Short Circuit Duration
Condition
Min.
Typ.
Max.
24V Input Model
-0.7
24
45
48V Input Model
-0.7
48
90
Nominal Input Range
Vdc
Indefinite & Auto-Restart
Reverse Polarity Input Current Limit
---
---
---
1
Operation Temperature (Ambient
Temperature)
Output Full Load
-40
---
+60
-55
---
+105
Storage Temperature
Unit
A
℃
4 . Nominal Input/Output Electrical Specifications
(Specifications typical at Ta= +25℃
,Nominal input voltage, Rated output current unless otherwise noted)
Parameter
Condition
Min.
Typ.
Max.
24V Input Model
18
24
36
48V Input Model
36
48
75
Line Regulation
Output Full Load
---
---
± 0.5
Load Regulation
Single Output Model
---
---
± 0.5
Nominal Input
---
---
± 2.0
---
350
---
KHz
---
---
± 0.02
%/ ℃
Standard Series
1500
---
---
Vdc
Input To Output (500 Vdc )
1000
---
---
MΩ
1KHz / 250mV rms
---
---
1000
pF
Input Voltage Range
Output Voltage Accuracy
Switching Frequency
Nominal Input
Temperature Coefficient
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Unit
Vdc
%
5 . General Specification
Parameter
Isolation Voltage
Specification
Condition
1500 Vdc
Test Duration 60 Seconds / 0.5 mA
Isolation Resistance
1000 MΩ Min.
@ 500 Vdc
Operating Temperature (1)
-40℃ ~ + 60℃
@ Ambient Temperature With Natural Convention
Operating Temperature (2)
-40℃ ~ + 90℃
@ Case Surface Temperature
Storage Temperature
Humidity
Cooling
Case Type
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-55℃ ~ +105℃
---
Up To 95 %
---
Free Air Convection
---
Metal
---
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BQ LF- Series
8 To 10 Watt Isolated DC-DC Converter
Single Output
6 . Ordering Information
BQ-xxxxSxM LF
Device Family
Input Voltage
Output Voltage
"S" For Single Output
Output Power
Suffix "M" For Metal Case
RoHS Converter Certified By SGS
7 . Power Derating Curve
( )
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BQ LF- Series
8 To 10 Watt Isolated DC-DC Converter
Single Output
8 . Efficiency & Output Load Chart
Vin=24/48V Vout= 3R3Vdc
24Vin
3000.0
2700.0
2400.0
18Vin
24Vin
Output Load (mA)
833.0
747.0
664.0
581.0
498.0
415.0
332.0
249.0
36Vin
83.0
2000.0
1800.0
1600.0
1400.0
1200.0
1000.0
800.0
600.0
400.0
36Vin
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
166.0
Efficiency %
24Vin
200.0
Efficiency %
Vin=24/48V Vout= 12 Vdc
18Vin
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2100.0
Output Load (mA)
Vin=24/48V Vout= 5 Vdc
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
1800.0
Output Load (mA)
1500.0
36Vin
300.0
3000.0
2700.0
2400.0
2100.0
1800.0
1500.0
900.0
1200.0
600.0
36Vin
18Vin
1200.0
24Vin
900.0
18Vin
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
600.0
Efficiency %
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
300.0
Efficiency %
Vin=24/48V Vout= 2R5Vdc
Output Load (mA)
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BQ LF- Series
8 To 10 Watt Isolated DC-DC Converter
Single Output
9 . Mechanical Dimension
Metal Case Model
31.75
(1.25)
10.16
(0.40)
5.00
(0.20)
27.63
(1.09)
Printed Face
BQ-240510M LF
8.50
(0.33)
IN=18~36Vdc
OUT=5Vdc Pb
22.86
(0.90)
φ0.50
Date Code
20.32 16.16
(0.80) (0.64)
Single Output
Pin
1
No Pin No Pin
24
2
3
3.05
(0.12) Min.
15.24
(0.60)
+Vin
23
22
21
5
20
No Pin No Pin
19
7
18
8
17
9
10
2.54
(0.10)
-Vin
4
6
(0.02)
Bottom View
Pin
11
12
N.C.
-Vo
No Pin No Pin
N.C.
+Vo
No Pin No Pin
16
15
14
13
Units : mm (inch)
Tolerance : 0.xx ± 0.25 (0.xx ± 0.01)
10 . Recommended Footprint Details
Metal Case Model
22.86
(0.90)
23 22
16
14
15.24
(0.60)
2 3
9
2.54
(0.10)
11
ψ1.0~1.2
1.0~1.2
Units : mm (inch)
Tolerance : 0.xx ± 0.25 (0.xx ± 0.01)
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978-887-8050
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[email protected]
BQ LF- Series
8 To 10 Watt Isolated DC-DC Converter
Single Output
11 . Package
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