B0503XT-W2中文资料
B_(X)T-W2 Series
0.25W,FIXED INPUT, ISOLATED & UNREGULATED SINGLE OUTPUT, SMD DC-DC
CONVERTER
multi-country patent protection RoHS
PRODUCT PROGRAM
Input
Output
Voltage (VDC) Current (mA) Part Number Nominal
Range
Voltage (VDC) Max Min Efficiency (%, Typ.)
B0503(X)T-W2 3.3 76 8 62 B0505(X)T-W2 5
50 5 64 B0509(X)T-W2 9 28 3 65 B0512(X)T-W2 12 21 2 67 B0515(X)T-W2 5
4.5-
5.5
15 17 2 66 B1205(X)T-W2 5
50 5 65 B1209(X)T-W2 9 28 3 64 B1212(X)T-W2 12 21 2 63 B1215(X)T-W2 12
10.8-13.2
15 17 2 64 B2405(X)T-W2 5
50 5 60 B2409(X)T-W2 9 28 3 61 B2412(X)T-W2 12 21 2 63 B2415(X)T-W2
24
21.6-26.4
15
17
2
65 Note: The B_XT-W2 series have no 3,6,7 pin. For example B0505XT-W2.
ISOLA TION SPECIFICATIONS
Item
Test Conditions
Min Typ. Max Units Isolation voltage Tested for 1 minute and 1mA max 1000 VDC Isolation resistance
Test at 500VDC
1000
M Ω
OUTPUT SPECIFICATIONS
Item
Test Conditions Min Typ. Max Units Output power
0.25 W
For Vin change of 1%(3.3V output) ±1.5 Line regulation
For Vin change of 1%(Others output) ±1.2 10% to 100% load (3.3V output) 15 20 10% to 100% load (5V output)
12.8 15 10% to 100% load (9V output) 8.3 10 10% to 100% load (12V output) 6.8 10 Load regulation
10% to 100% load (15V output)
6.3
10
% Output voltage accuracy
See tolerance envelope graph Temperature drift 100% full load 0.03 %/°C Output ripple &Noise* 20MHz Bandwidth
50 75 mVp-p Full load, nominal input(24V input) 500 Switching frequency
Full load, nominal input (others input)
110
KHz
*T est ripple and noise by “parallel cable ” method. See detailed operation instructions at T esting of Power Converter
section, application notes. FEATURES
Single Voltage Output SMD Package Style No Heat sink Required 1KVDC Isolation
T emperature Range: -40°C to +85°C Internal SMD construction
No External Component Required Industry Standard Pinout RoHS Compliance
APPLICATIONS
The B_(X)T-W2 Series are specially designed for applications where a group of polar power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to:
1) Where the voltage of the input power supply is fixed (voltage variation ≤ ±10%); 2) Where isolation is necessary between input and output (isolation voltage ≤1000VDC);
3) Where the regulation of the output voltage and the output ripple noise are not demanding.
Such as: purely digital circuits, ordinary low frequency analog circuits, and IGBT power device driving circuits.
MODEL SELECTION
B0505(X )T-W2
P ro duct Se ries Inpu t Vol tag e Output Voltag e P ackage Styl e Ra ted Power
MORNSUN Science& Technology co.,Ltd.
Address: 2th floor 6th building, Huangzhou
Industrial District, Guangzhou, China Tel: 86-20-38601850
Fax:86-20-38601272 https://www.wendangku.net/doc/6318297520.html,
Note:
1. All specifications measured at T A =25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
2. See below recommended circuits for more details.
COMMON SPECIFICA TION
APPLICA TION NOTE
Item
Test Conditions Min Typ. Max Units Storage humidity 95 %
Operating temperature -40 85 Storage temperature -55 125 Temp. rise at full load
15 25 Lead temperature 1.5mm from case for 10 seconds
260
°C Cooling
Free air convection Case material
Plastic(UL94-V0)
Short circuit protection* 1 s MTBF 3500 K hours Weight
1.35
g
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
Operating Temp.(C)
o
RECOMMENDED REFLOW SOLDERING PROFILE
100150200250220C
o 10 M ax
Sec 260C
o
90 Max (>220C )
o Sec T e m p e r a
t u r e (C )
o
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
FOOTPRINT DETAILS
Pin Function(XT)1243,6,7
5Vin GND +Vo
0V 8NC NC:No Connection
Function(T)Vin GND +Vo NC 0V NC Note:
Unit:mm(inch)
Pin section:0.60*0.25mm(0.024*0.010inch)Pin section tolerances:0.10mm(0.004inch)General tolerances:0.15mm(0.006inch)
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*0.1inch)B_(X)T-W2
No Pin
Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load is not less than 10% of the full load, and that this product should never be operated under no load! If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load.
Recommended circuit
If you want to further decrease the input/output ripple, an “LC ” filtering network may be connected to the input and output ends of the DC/DC converter, see (Figure 1).
Vin
+Vo
0V
(Figure 1)
It should also be noted that the inductance and the frequency of the “LC ” filtering network should be staggered with the DC/DC frequency to avoid mutual interference. However, the capacitance of the output filter capacitor must be proper. If the
capacitance is too big, a startup problem might arise. It ’s not recommended to connect any external capacitor in the application field.
Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation,
over-voltage
and
over-current
protection is a linear voltage regulator with overheat protection that is connected to the input or output end in series (Figure2).
Vin Vin REG
0V
DC DC
(Figure2)
Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against over-current and short-circuits. The simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit.
No parallel connection or plug and play.