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BR301

P1-P3P4-P6P7-P9P10-P10
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
Description
The BR301 is non-isolated step down type DC/DC
converter module. The single module includes: a control IC,
inductor, ceramic capacitor, and standoff pins. This provides a
complete DC / DC converter solution, requiring few external
components. It can be configured easily, reducing overall
design time, allowing reuse of designs, and saving space on
the application PCB.
Features and Benefits
▪ Input voltage range 8 to 30 VDC
▪ Circuit topology: step-down chopper
▪ Switching frequency: 350 kHz
▪ Output: 3.3 V, 1 A, 3.3 W
▪ Module footprint: 14 × 14 × 10 mm (W × D × H)
▪ Weight: 1.6 g
▪ All in one
▪ Design-free
▪ High efficiency: 87% (typ) at V
IN
= 8 V, I
O
= 0.6 A
▪ Miniaturizes space required, by using high-frequency
switching technology
▪ Protection functions:
▫ Overcurrent Protection function (OCP), with auto restart
▫ Thermal Shutdown Protection function (TSD), with
auto restart
3.3 V, 1 A Non-Isolated Step Down DC/DC Converter Module
Typical Application Circuit
BR301
BR301-DS, Rev. 1.0
September 11, 2012
Applications:
• Factory Automation
• Communication devices
• Consumer electronics
• Other low power conversion
VIN VO
V
IN
8 to 30 V
C
IN
220 μF
C
O
Electrolytic 470 μF
or Ceramic 30 μF
1
32
4
GND
NC
Load
BR301
14 × 14 mm (11 mm height mounted)
Package: Module
2
SANKEN ELECTRIC CO., LTD.
BR301-DS, Rev. 1.0
3.3 V, 1 A Non-Isolated Step Down DC/DC Converter Module
BR301
September 11, 2012
Selection Guide
Part Number
BR301
The polarity value for current specifies a sink as "+," and a source as “,” referencing the IC.
Absolute Maximum Ratings, valid at T
A
= 25°C
Characteristic Symbol Notes Pins Rating Unit
Input Voltage V
IN
4 – 2 –0.3 to 35 V
Operating Temperature Range TOP See the derating curve – –20 to 85 °C
Operating Humidity Range HOP No condensation – 10 to 90 %
Storage Temperature Range TSTG – –20 to 85 °C
Storage Humidity Range HSTG No condensation – 5 to 95 %
Vibration (non-operation)
Frequency – – 10 to 55 Hz
Acceleration – – 19.6 m/s
2
Sweep Time – – 1 minute
Vibration – – 1.5 mm
Vibration Direction – – X,Y,Z –
Vibration Time – – 2 hour
Shock Capability –
Dropped from 50 mm height to a concrete sur-
face, five times each on left and right sides.
– No failure –
Recommended Operating Conditions, valid at T
A
= 25°C, unless otherwise specified
Characteristic Symbol Conditions Pins Min. Max. Unit
Input Voltage Range V
IN
4 – 2 8 30 V
Output Current Range I
O
1 – 2 0 1 A
3
SANKEN ELECTRIC CO., LTD.
BR301-DS, Rev. 1.0
3.3 V, 1 A Non-Isolated Step Down DC/DC Converter Module
BR301
September 11, 2012
Electrical Characteristics Unless specifically noted, T
A
is 25°C
Characteristic Symbol Test Conditions Pins Min. Typ. Max. Unit
Input Current I
IN
V
IN
= 24 V, I
O
= 1 A 4-2 – 0.17 – A
Standby Power P
STB
V
IN
= 24 V, I
O
= 1 A 4-2 – 0.13 – W
Output Voltage V
O
1-2 – 3.30 – V
Constant Voltage Accuracy V
ACC
1-2 3.0 – 3.0 %
Output Current I
O
1-2 0 – 1.0 A
Maximum Output Power P
O(MAX)
1-2 – – 3.3 W
Output Voltage Ripple* V
RIP
V
IN
= 24 V, I
O
= 1 A 1-2 – 50 – mV
P-P
Output Voltage Noise* V
NOISE
V
IN
= 24 V, I
O
= 1 A 1-2 – 50 – mV
P-P
Output Overcurrent Protection I
OCP
1-2 1.1 – – A
*
The ripple measurement is made at both ends of the electrolytic capacitor C
O
(470 F). For the capacitor C
IN
, a YXF type made by Rubycon for
switching power supplies, or equivalent, is recommended. For C
O
, a low impedance ZL type made by Rubycon for switching power supplies, or
equivalent, is recommended. In this case, a 470 F electrolytic capacitor was connected at 10 mm trace length from the output terminal.
Ripple Current Measurement Circuit
VIN VO
V
IN
C
IN
220 μF
C
O
470 μF
Electrolytic
1
2
10 mm
Trace Length
4
GND
Rated
Load
50 Ω
10 nF
Terminator
Oscilloscope
BW 20 MHz
Z = 1 MΩ
BR301
1.5D2V coaxial cable
(RG-174/U equivalent)
1.5 m Length
P1-P3P4-P6P7-P9P10-P10

BR301

Mfr. #:
Buy BR301
Manufacturer:
Description:
DC DC CONVERTER 3.3V 3W
Lifecycle:
New from this manufacturer.
Delivery:
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