BD7673AG
PWM Control Type DC/DC Converter IC for AC/DC Driver
BD7673AG
PWM Control Type DC/DC Converter IC for AC/DC Driver
AC/DC用PWM控制器型DC/DC轉換器BD7673AG為所有存在介面的產品提供最佳的系統。絕緣、非絕緣均可對應，可輕鬆設計各種形式的低功耗轉換器。外接開關用MOSFET及電流檢測電阻，可實現自由度高的電源設計。通過峰值電流控制，可進行逐週期電流限制，發揮內建寬和暫態響應的優異性能。BD7673AG內建了緩啟動功能、脈衝串功能、逐週期過電流限制、VCC過電壓保護、過負載保護等各種保護功能。備有外部鎖存端子（COMP端子），可通過外部訊號停止鎖存（OFF）。此功能可用於溫度保護及輸出過電壓保護等。開關頻率固定為65kHz。內建跳頻功能，有助於實現低EMI。
Product Detail
規格:
FET
External
Controller Type
PWM
Vin1(Min.)[V]
8.5
Vin1(Max.)[V]
25
SW frequency(Max.)[kHz]
65
Vcc OVP
Latch
BR PIN
No
Channel
1
Light Load mode
Yes
EN
No
Soft Start
Yes
Thermal Shut-down
Latch
Under Voltage Lock Out
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
2.9x2.8 (t=1.25)
功能:
・ 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)
・ 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)
