Wide input / output, Buck-boost, ±Output DC/DC Converter
1 Watt BUD Series
1
Bellnix
DC-DC Converter
BDD20200930_Z02(BDD20190924_Z02)
BUD series is a non-isolated DC/DC converter that features wide input / output,
buck-boost, ±output, small size (10×11×6mm). It is ideal for supplying power to analog
circuits from unstable bus voltages for batteries, unstable power supplies and so on.
■
Features
･
Wide input / output
･
Buck-boost type
･
± Output
･
Ultra small size: SMD package
･
High efficiency
･
Max 1.8Woutput
(Input / output voltage derating required
）
･
Over-power protection
･
UVLO function
･
Remote ON/OFFcontrol
･
Equipped with skip mode at light load
･
Non-isolated type
･
Operating temp. Ta = -40°C to +85°C
･
RoHS compliance
･
Output voltage setting is determined by the
single resistor
■
Model & rating
Models
BUD Series
Input V
Vdc
Output V
Vdc
Output P
W
Line Reg.
% (max.)
Load Reg.
% (max.)
Ripple noise
mVpp (typ.)
Efficiency
% (typ.)
BUD12-12W042
12
(3 to 18)
±12
(±3 to 18)
1
(±0.5W each)
1.0
1.0
10
87.5
(Po=0.8W×2)
Note 1: In the measurement circuit in section 4-3.
Note 2: Unless otherwise specified the product is measured at input voltage 12V, output voltage ±12V, output power 0.5W×2, and
ambient temperature 25°C±5°C.
Note 3: Ripple noise is measured at BW=20MHz.
Note 4: The usable input / output voltage range is within the range shown in Fig. 1.
Note 5: The output voltage settings for positive and negative outputs are equal (Voutp = | Voutn |).
Note 6: Maximum output power of 1.8W (±0.9W each) can be output depending on input/ output conditions. For details, refer to section
4-4.
■
Specificatiom
Input/ output voltage range
Refer to Figure 1.
Rated input voltage
12V
Rated output voltage
±12V
Rated output power
0.5W ×2
Output voltage accuracy
±5% max.
Line regulation
Refer to Table 1 (To the regulation of the input voltage range in Table 1)
Load regulation
Refer to Table 1 (To the regulation of Pout
p,n
= 0.05 to 0.5W)
Mutual regulation
100mV typ, 200mV max
(10% ≤ Pout
p,n
≤ 100%
)
Ripple noise
Refer to Table 1 (Measurement frequency bandwidth 20MHz)
Efficiency
Refer to Table 1
Standby current
0.1uA typ., 1.1uA max. (Input voltage 4.2V)
Over-current protection
Operates at 105% or more of the rated output power, automatic restoration.
UVLO
Available
Remote On/ Off
Available
Operating temperature range
-40°C to +85°C
Storage temperature range
-40°C to +85°C
Operating humidity
20 to 95%R.H. (Max. wet bulb temperature 69
℃
with non-condensing)
Storage condition
Until being mounted, keep below 30°C/60% R.H.
Cooling condition
Natural air cooling
Mass
0.7g
Outer dimension
W=10 L=11 H=6 (mm) (For details refer to section 6-1)
＊
The above specifications are provided with rated value, unless otherwise specified.
＊
The contents provided in this data sheet may be changed at any time without prior notice.
Figure 1 Input/ output voltage range
Table 2
Table 1
