MD3221N 查看數據表（PDF） - Unspecified
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MD3221N Datasheet PDF : 26 Pages
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3 Specifications
◆Absolute maximum ratings
Power supply voltage (voltage at VCC)
22V
High side MOSFET input voltage
22V
Average output current
3A
Peak output current
4A
Voltage between VB and VOUT
5.5V
Allowable applied output current at Vboot
-30mA
Allowable applied current at Vref
-3mA
Storage temperature
-50〜150℃
Temperature at contacts
150℃
◆Recommended Operating Conditions
Input voltage range
Settable output voltage range
Ambient temperature range
4.5〜20V
0.8〜14V
-30〜85℃
◆Electrical Characteristics
Item
High side MOSFET
Drain-source breakdown voltage
Drain breaking current
Drain-source ON resistance
Source-drain diode forward voltage
Low side MOSFET
Drain-source breakdown voltage
Drain breaking current
Drain-source ON resistance
Source-drain diode forward voltage
Control IC current consumption
Current consumption (at f=100kHz)
Current consumption (at f=300kHz)
Current consumption (remote OFF)
UVLO
Start-up voltage
Stop voltage
Start-up-stop voltage hysteresis
Bootstrap
BOOT pin voltage
Power supply voltage variation
Voltage load variation
Reference voltage
Internal reference voltage
Power supply voltage variation
Voltage load variation
Oscillator circuit
Internal oscillation frequency 1 (f=100kHz)
Internal oscillation frequency 2 (f=300kHz)
Maximum duty ratio (f=300kHz)
Remote control
Remote ON voltage
Remote OFF voltage
Short-circuit current
Condition
ID= 1mA, VGS= 0V
VDS= 22V, VGS= 0V
ID= 1.2A, VGS= 4.5V
IS= 1.2A, VGS= 0V
ID= 1mA, VGS= 0V
VDS= 22V, VGS= 0V
ID= 1.2A, VGS= 4.5V
IS= 1.2A, VGS= 0V
Vcc = 4.5〜20V
Vcc = 4.5〜20V
Vcc = 4.5〜20V
−
−
−
Vcc = 5V
Vcc = 4.5〜20V
Vcc = 5V
Vcc = 5V
Vcc = 4.5〜20V
Vcc = 5V
Vcc = 5V
Vcc = 5V
Vcc = 5V
Vcc = 5V
Vcc = 5V
Vcc = 5V
5
Ta= 25℃ unless specified otherwise.
Min.
Typ.
Max.
Unit
22
−
−
V
−
−
10
μA
−
22
55
mΩ
−
−
1.5
V
22
−
−
V
−
−
10
μA
−
22
55
mΩ
−
−
1.5
V
−
3.3
3.9
mA
−
5
5.9
mA
−
25
50
μA
4.1
4.3
4.5
V
3.6
3.8
4.0
V
−
0.5
−
V
3.84
4
4.16
V
−
−
30
mV
−
−
30
mV
3.84
4
4.16
V
−
−
30
mV
−
−
30
mV
85
100
115
kHz
255
300
345
kHz
85
90
95
％
-0.2
−
0.7
V
2
−
Vcc
V
−
2
10
μA
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