Synchronizable, High-Frequency Current- and

Voltage-Mode PWM Controllers for Isolated Supplies

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

OPTO, UV, OV, EN, PRAMP, ILIM, REF to GND ......-0.3V to +6V

SCOMP, FREQ, CS, SKTON, SKTOFF, SS,

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

Operating Temperature Range ...........................-40

°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65

°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range

(Note 1)

7.6

18.0

V

7.6

8.0

8.4

Undervoltage Lockout

6.6

7.0

7.4

V

Undervoltage Lockout Hysteresis

0.9

1.0

V

No switching

3.5

4.2

Supply Current

Switching with no load

5

6.3

mA

Shutdown Current

0.5

0.9

mA

REF

Output Voltage

4.9

5.0

5.1

V

Load Regulation

20

50

mV

Line Regulation

5

20

mV

Pulldown Resistor in Shutdown

10

30

Ω

UNDERVOLTAGE/OVERVOLTAGE (UV/OV)

1.200

1.250

1.300

UVLO Threshold

1.083

1.128

1.173

V

Input Bias Current

-0.5

+0.01

+0.5

µA

2.9

3.021

3.1

OVLO Threshold

2.778

2.894

3.010

V

EN

Input Low Threshold

1.2

V

Input High Threshold

2.6

V

Pullup Current

5

17

µA

CURRENT LIMIT

0.075

1.250

V

CS Current-Limit to DRV Turn-Off

Delay

Includes leading-edge blanking time

110

150

ns

±10

%

Voltage

1.175

1.250

1.330

V