July 16, 2014 | DATASHEET V3.3

6

IR3553

40A Integrated PowIRstage®

ELECTRICAL SPECIFICATIONS

The electrical characteristics involve the spread of values guaranteed within the recommended operating conditions.

Typical values represent the median values, which are related to 25°C.

RECOMMENDED OPERATING CONDITIONS FOR RELIABLE OPERATION WITH MARGIN

PARAMETER

SYMBOL

MIN

MAX

UNIT

Recommended VIN Range

VIN

4.5

15

V

Recommended VCC Range

VCC

4.5

7

V

Recommended REFIN Range

REFIN

0.25

VCC – 2.5

V

Recommended Switching Frequency

200

1000

kHz

Recommended Operating Junction Temperature

-40

125

°C

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Efficiency and Maximum Current

IR3553 Peak Efficiency

Note 1

η

Note 2. See Figure 2.

92.7

%

Note 3. See Figure 7.

92.2

%

IR3553 Maximum DC Current

Note 1

Note 2.

40

A

IR3553 Maximum Peak Current

Note 1

Note 4. 5ms load pulse

width, 10% load duty cycle.

60

A

PWM Comparator

PWM Input High Threshold

PWM Tri-state to High

2.5

V

PWM Input Low Threshold

PWM Tri-state to Low

0.8

V

PWM Tri-state Float Voltage

PWM Floating

1.2

1.65

2.1

V

Hysteresis

Active to Tri-state or Tri-

state to Active, Note 1

65

76

100

mV

Tri-state Propagation Delay

PWM Tri-state to Low

transition to GATEL >1V

38

ns

PWM Tri-state to High

transition to GATEH >1V

18

ns

PWM Sink Impedance

3.67

5.1

8.70

kΩ

PWM Source Impedance

3.67

5.1

8.70

kΩ

Internal Pull up Voltage

VCC > UVLO

3.3

V

Minimum Pulse Width

Note 1

41

58

ns

Current Sense Amplifier

CSIN+/- Bias Current

-100

0

100

nA

CSIN+/- Bias Current Mismatch

-50

0

50

nA

Calibrated Input Offset Voltage

Self-calibrated offset,

0.5V ≤ V(REFIN) ≤ 2.25V

±450

µV