power management pmic

B0505S-1W

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the B0505S-1W does

The B0505S-1W is a 1W isolated DC-DC converter module featuring a single unregulated output. It operates across a 4.5V to 5.5V input range, delivering 5V at up to 200mA with 76% to 79% efficiency. The unit provides 1500VDC isolation and handles a maximum capacitive load of 100uF. Designed for industrial instrumentation, medical devices, and communication systems like RS485 or CAN-BUS, it eliminates ground loops. The module supports a wide operating temperature range from -40°C to +85°C and includes built-in soft-start technology for reliable startup.

Next step
Start building with B0505S-1W → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

Datasheet parameters

Datasheet parameters for B0505S-1W
ParameterMinTypMaxConditionsSource
output voltage — 4.93 V — Vin = 5Vdc EVISUN datasheet, p. 1 — 产品输出特性
output current — 200 mA — EVISUN datasheet, p. 1 — 产品输出特性
supply voltage range 4.5 V — 5.5 V EVISUN datasheet, p. 1 — 产品命名规则
switching frequency — 77 kHz — 100% load, nominal input voltage EVISUN datasheet, p. 2 — 产品一般特性
operating temperature -45 °C — 85 °C 周围环境温度; 产品一般特性 EVISUN datasheet, p. 2 — 产品一般特性
output noise voltage — 60 mV — 20MHz bandwidth EVISUN datasheet, p. 1 — 产品输出特性
output count — 1 — EVISUN datasheet, p. 1 — 产品输出特性
02 — Alternatives

Closest matches to B0505S-1W

B0503LS-1WR3 3.8× lower quiescent current, 2.6× higher switching frequency, 2.0× lower output noise voltage
B0503S-1WR3 3.8× lower quiescent current, 3.5× higher switching frequency, 2.0× lower output noise voltage
LM2576-12 15.0× higher output current, 8.0× higher supply voltage range, 2.4× higher output voltage
AP3032KTR-G1 13.0× higher switching frequency, 7.0× higher output current, 5.8× lower quiescent current
AP63203WU-7 14.3× higher switching frequency, 10.0× higher output current, 3.6× higher supply voltage range
LM2576 15.0× higher output current, 8.0× higher supply voltage range, 4.6× lower quiescent current
LM2596 15.0× higher output current, 4.6× lower quiescent current, 4.5× higher supply voltage range
XL1509-12E1 11.5× lower quiescent current, 10.0× higher output current, 4.5× higher supply voltage range
03 — FAQ

Frequently asked questions

What is the operating temperature for the B0505S-1W under the condition of ambient temperature and general product characteristics?

The operating temperature is 85 °C.

How many outputs does the B0505S-1W have?

The B0505S-1W has an output count of 1.

What is the output current of the B0505S-1W?

The output current is 200 mA.

What is the output noise voltage of the B0505S-1W?

The output noise voltage is 60 mV at a 20MHz bandwidth.

What is the output voltage when Vin = 5Vdc?

The output voltage is 4.93 V.

What is the supply voltage range for the B0505S-1W?

The supply voltage range is 5.5 V.

What is the switching frequency at 100% load and nominal input voltage?

The switching frequency is 77 kHz at 100% load and nominal input voltage.

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