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ac/dc用 准谐振控制器型 dc/dc转换器ic
bd7684fj-lb
主要规格
特性：
fb olp
auto restart
zt ovp
latch
br uvlo
yes
external latch function
no
ac monitor function
no
vh terminal uvlo
no
frequency reduction function
yes
current detection resistors
external
dynamic over current detection
no
fet
external
controller type
qr
vin1(min.)[v]
15
vin1(max.)[v]
27.5
sw frequency (max.)[khz]
120
vcc ovp
auto restart
br pin
yes
channel
1
light load mode
yes
en
no
soft start
yes
thermal shut-down
yes
under voltage lock out
yes
operating temperature (min.)[°c]
-40
operating temperature (max.)[°c]
105
package size [mm]
4.9x6 (t=1.65)
特点：
- pin 8 : sop-j8 package (6.00mm × 4.90mm : 1.27mm pitch [typ] )
- quasi-resonant type (low emi)
- frequency reduction mode
- low current consumption (19µa), during standby
- low current consumption when no load (burst operation when light load)
- maximum frequency (120khz)
- cs pin leading-edge blanking
- vcc uvlo (under voltage drop out protection)
- vcc ovp (over voltage protection)
- per-cycle over-current protection circuit
- soft start
- zt trigger mask function
- voltage protection function (brown out)
- zt ovp (over voltage protection)
- gate-clamp circuit
reference design / application evaluation kit
-
- evaluation board - bd7682fj-lb-evk-402
isolation fly-back converter quasi-resonant method output 24 w 24 v
| user guide | block diagram | schematic | part list | layout (pdf) |
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