BMA1 / BMB1
Series
1 Watt Isolated DC-DC Converter
Dual
Dual Dual
Dual Output
OutputOutput
Output
1
1 . Features
Input Filter With Internal Capacitor
SIL and DIL Package
Low Ripple And Noise
Input / Output Isolation 1K Vdc
100% Burn-In
Industry Standard Pinout
Custom Design Available
Net Weight : 3.0g / 3.7 g Typical
RoHS Converter Certified By SGS
Safety Approval : EN60950-1
2 . Model Selection Guide
(Specifications typical at Ta= +25℃
℃℃
℃, Nominal input voltage, Rated output current unless otherwise noted)
Model No.
Input
Voltage
(Vdc)
Output
Voltage
(Vdc)
Output
Current
(mA) Max
Input Current
@No Load
(mA) Typ.
Input Current
@Max. Load
(mA) Typ.
Output
Ripple
(mV) Max.
Load
R
egulation
(%) Max.
Efficiency
(%)Typ.
1) Dual Output SIL Package Style
BMA1-48D1 ± 5 ± 100 6 31 60 ±10 72
BMA1-48DA ±9 ± 56 5.5 30 80 ±10 74
BMA1-48D2 ± 12 ± 42 5.5 30 100 ±10 73
BMA1-48D3
48
± 15 ± 34 5.5 30 120 ±10 74
2) Dual Output DIL Package Style
BMB1-48D1 ± 5 ± 100 6 31 60 ±10 72
BMB1-48DA ± 9 ± 56 5.5 30 80 ±10 74
BMB1-48D2 ± 12 ± 42 5.5 30 100 ±10 73
BMB1-48D3
48
± 15 ± 34 5.5 30 120 ±10 74
3 . Absolute Maximum Ratings
(Exceeding these values may damage the module. These are not continuous operating ratings)
Parameter Condition Min. Typ. Max. Unit
Input Absolute Voltage Range 48V nominal Input -0.7 48 60 Vdc
Max. Output Power --- --- 1 W
Output Short Circuit Duration --- --- 1.0 Second
OperationTemperature(Ambient
Temperature)
Output Full Load -40 --- +85
Storage Temperature -55 --- +105
℃
BOTHHAND USA
sales@bothhandusa.com
BMA1 / BMB1
Series
1 Watt Isolated DC-DC Converter
Dual
Dual Dual
Dual Output
OutputOutput
Output
2
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. Unit
Input Voltage Range 48V nominal Input 43.2 48 52.8 Vdc
Output Voltage Accuracy --- --- ± 5.0
Load Regulation(10% load to full load)
--- --- ± 10
Voltage Balance (Dual Outputs) --- --- ± 1.0
Unbalanced load 10% to 100% full load
--- --- ±15
%
Switching Frequency --- 100 --- KHz
Temperature Coefficient
Nominal Input
--- ± 0.01 ± 0.02 %/ ℃
Isolation Voltage 60 Second / 0.5 mA 1000 --- --- Vdc
Isolation Resistance 500 Vdc 1000 --- ---
MΩ
Isolation Capacitance 1KHz / 250mV rms --- 30 --- pF
Max. Line Regulation (Per 1.0 % change in input change)
--- --- 1.3 %
5 . General Specification
Parameter Specification Condition
Isolation Voltage 1000 Vdc Test Duration 60 Seconds / 0.5 mA
Isolation Resistance
1000 MΩ Min.
@ 500 Vdc
Operating Temperature (1)
-40℃ ~ +85℃
@ Ambient Temperature With Natural Convention
Operating Temperature (2)
-40℃ ~ +95℃
@ Case Surface Temperature
Storage Temperature
-55℃ ~ +105℃
---
Humidity Up To 90 % ---
Cooling Free Air Convection ---
Case Type Plastic ---
6. Ordering Information 7 . Power Derating Curve
Temperature derating graph
100-40 -20 0 20 40
60
80 120
25%
50%
75%
100%
125%
85
8585
85
Temperature Derating Graph
Operating Ambient Temperature(°C)
Output Power(%)
BMA1-xxD1
Device Family
Input Voltage
Output Voltage:"0"For 3.3V;"1"For
5V;"A"For 9V;"2"For 12V;"3"For 15V
"A"For SIL Package;"B"For DIL Package
"S"For Single Output;"D" For Dual Output
Output Power
BOTHHAND USA
sales@bothhandusa.com