Datasheet > BD7673AG

BD7673AG

更新时间： 2024-02-27 14:16:19

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罗姆 - ROHM		/
页数	文件大小	规格书
21页	969K
描述
PWM Control Type DC/DC Converter IC for AC/DC Driver

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BD7673AG 数据手册

Datasheet

PWM Control Type

DC/DC Converter IC for AC/DC Driver

BD7673AG

●General Description

●Key Specifications

BD7673AG is a PWM controller type DC/DC converter

for AC/DC that provides an optimum system for all

products that requires an electrical outlet. This product

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.

 Power Supply Voltage range:

8.5V to 25.0V

0.60mA (Typ)

0.40mA (Typ)

65kHz (Typ)

-40°C to +85°C

 Operating Current:

Normal:

Burst:

 Oscillation Frequency:

 Operating Temperature range:

●Package

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

2.90mm x 2.80mm x1.25mm

SSOP6

Since the peak current control is utilized, peak current

is controlled in each cycle, application excels wide

bandwidth and transient response.

BD7673AG 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

AC adapters and household appliances (vacuum cleaners,

humidifiers, air cleaners, air conditioners, refrigerators, IH

cooking heaters, rice cookers, etc.)

■

Built-in SW frequency hopping function

250nsec leading-edge blanking

VCC UVLO / OVP

■

Per-cycle over current protection circuit

Soft start

Output overload protection (latch protection)

External latch function for COMP pin

(Over heating protection function)

●Typical Application Circuit

FL1

ZNR1

7673

7673A

R11

R10

Figure 1, Application Diagram (12 V 1A Isolated Type)

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

.www.rohm.com

TSZ02201-0F2F0A200120-1-2

16.Jul.2015 Rev.002

1/17

TSZ22111・14・001

12 3 4 5 6 7...21

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