IR2151 参数 Datasheet PDF下载

IR2151

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

V

B

V

S

V

HO

V

LO

V

RT

V

CT

I

CC

I

RT

dV

s

/dt

P

D

R

θJA

T

J

T

S

T

L

Parameter

Definition

High Side Floating Supply Voltage

High Side Floating Supply Offset Voltage

High Side Floating Output Voltage

Low Side Output Voltage

R

T

Voltage

C

T

Voltage

Supply Current (Note 1)

R

T

Output Current

Allowable Offset Supply Voltage Transient

Package Power Dissipation @ T

A

≤

+25°C

Thermal Resistance, Junction to Ambient

Junction Temperature

Storage Temperature

Lead Temperature (Soldering, 10 seconds)

(8 Lead DIP)

(8 Lead SOIC)

(8 Lead DIP)

(8 Lead SOIC)

Value

Min.

-0.3

V

B

- 25

V

S

- 0.3

-0.3

-0.3

-0.3

—

-5

—

—

—

—

—

—

-55

—

Max.

625

V

B

+ 0.3

V

B

+ 0.3

V

CC

+ 0.3

V

CC

+ 0.3

V

CC

+ 0.3

25

5

50

1.0

0.625

125

200

150

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 V

S

offset rating is tested with all supplies biased at 15V differential.

Symbol

V

B

V

S

V

HO

V

LO

I

CC

T

A

Note 1:

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.

V

S

+ 10

—

V

S

0

—

-40

Max.

V

S

+ 20

600

V

B

V

CC

5

125

Units

V

mA

°C

Because of the IR2151’s application specificity toward off-line supply systems, this IC contains a zener clamp

structure between the chip V

CC

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 V

CC

and the rectified line voltage and a local decoupling capacitor from

V

CC

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 V

CLAMP

.

B-188 C

ONTROL

I

NTEGRATED

C

IRCUIT

D

ESIGNERS’

M

ANUAL