Datasheet > BD550FHG

BD550FHG

更新时间： 2024-11-04 01:20:55

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
21页	919K
描述
AC/DC Controller IC for non-dimmable LED lighting

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BD550FHG 数据手册

Datasheet

AC/DC Drivers

AC/DC Controller IC

for non-dimmable LED lighting

BD550FHG

●General Description

●Key Specifications

LED driver BD550FHG supports both isolated and

non-isolated devices. IC enables simple design of

low-power electrical converters.

With switching MOSFET and current detection resistor

as external devices, it enables more freedom in design.

Since the peak current control is utilized, peak current

is controlled in each cycle, application excels wide

bandwidth and transient response.

 Power Supply Voltage range:

8.5V to 25.0V

 Operating Current:

Normal:

Burst:

0.60mA (Typ)

0.40mA (Typ)

65kHz (Typ)

-40°C to +110°C

 Oscillation Frequency:

 Operating Temperature range:

●Package

W(Typ) x D (Typ) x H (Max)

2.90mm x 2.80mm x1.25mm

SSOP6

BD550FHG includes various protective functions such

as soft start function, burst function, per-cycle over

current limiter, VCC overvoltage protection and

overload protection.

An external latch pin (COMP pin) is provided, so that

latch stopping (OFF) can be set by external signals.

This function is available as overheating protection and

over output voltage protection.

The PWM switching frequency is fixed at 65 kHz.

A frequency hopping function is included which contributes

to low EMI.

●Features

■

PWM frequency of 65kHz

PWM current mode method

Low circuit current when UVLO is ON

(12μA at VCC=12V)

■

Low circuit current without load

(Burst operation when load is light)

●Applications

 Electrical machineries for LED lighting

■

Built-in SW frequency hopping function

250nsec leading-edge blanking

VCC UVLO / OVP

■

Per-cycle over current protection circuit

Soft start

Output overload protection (Self-restart protection)

External latch function for COMP pin

(Over heating protection function)

●Typical Application Circuit

Figure 1, Application Diagram (Non-Isolated Type)

○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

.www.rohm.com

TSZ02201-0F1F0C300020-1-2

2013.07.25 Rev.001

1/17

TSZ22111・14・001

12 3 4 5 6 7...21

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