IR2151(Old_V) Просмотр технического описания (PDF) - International Rectifier
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IR2151 Datasheet PDF : 6 Pages
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IR2151
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Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage param-
eters are absolute voltages referenced to COM. The Thermal Resistance and Power Dissipation ratings are measured
under board mounted and still air conditions.
Symbol
VB
VS
VHO
VLO
VRT
VCT
ICC
IRT
dVs/dt
PD
RθJA
TJ
TS
TL
Parameter
Definition
High Side Floating Supply Voltage
High Side Floating Supply Offset Voltage
High Side Floating Output Voltage
Low Side Output Voltage
RT Voltage
CT Voltage
Supply Current (Note 1)
RT Output Current
Allowable Offset Supply Voltage Transient
Package Power Dissipation @ TA ≤ +25°C (8 Lead DIP)
(8 Lead SOIC)
Thermal Resistance, Junction to Ambient (8 Lead DIP)
(8 Lead SOIC)
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
Value
Min.
Max.
-0.3
625
VB - 25
VS - 0.3
-0.3
-0.3
-0.3
—
VB + 0.3
VB + 0.3
VCC + 0.3
VCC + 0.3
VCC + 0.3
25
-5
5
—
50
—
1.0
—
0.625
—
125
—
200
—
150
-55
150
—
300
Units
V
mA
V/ns
W
°C/W
°C
Recommended Operating Conditions
The Input/Output logic timing diagram is shown in Figure 1. For proper operation the device should be used within the
recommended conditions. The VS offset rating is tested with all supplies biased at 15V differential.
Symbol
VB
VS
VHO
VLO
ICC
TA
Parameter
Definition
High Side Floating Supply Absolute Voltage
High Side Floating Supply Offset Voltage
High Side Floating Output Voltage
Low Side Output Voltage
Supply Current (Note 1)
Ambient Temperature
Value
Min.
Max.
VS + 10
—
VS + 20
600
VS
VB
0
VCC
—
5
-40
125
Units
V
mA
°C
Note 1:
Because of the IR2151’s application specificity toward off-line supply systems, this IC contains a zener clamp
structure between the chip VCC and COM which has a nominal breakdown voltage of 15.6V. Therefore, the IC
supply voltage is normally derived by forcing current into the supply lead (typically by means of a high value
resistor connected between the chip VCC and the rectified line voltage and a local decoupling capacitor from
VCC to COM) and allowing the internal zener clamp circuit to determine the nominal supply voltage. There-
fore, this circuit should not be driven by a DC, low impedance power source of greater than VCLAMP.
B-188 CONTROL INTEGRATED CIRCUIT DESIGNERS MANUAL
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