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
･Ultra small size: SMD package
･Max 1.8Woutput
(Input / output voltage derating required）
･Equipped with skip mode at light load
･Operating temp. Ta = -40°C to +85°C
･Output voltage setting is determined by the
single resistor
■Model & rating
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 Table 1 (To the regulation of the input voltage range in Table 1)
Refer to Table 1 (To the regulation of Poutp,n = 0.05 to 0.5W)
100mV typ, 200mV max (10% ≤ Poutp,n ≤ 100%)
Refer to Table 1 (Measurement frequency bandwidth 20MHz)
0.1uA typ., 1.1uA max. (Input voltage 4.2V)
Operates at 105% or more of the rated output power, automatic restoration.
Operating temperature range
Storage temperature range
20 to 95%R.H. (Max. wet bulb temperature 69℃with non-condensing)
Until being mounted, keep below 30°C/60% R.H.
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
