High-Performance, Single-Ended, Current-Mode

PWM Controllers

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5

ELECTRICAL CHARACTERISTICS (continued)

unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CURRENT-SENSE AMPLIFIER

MAX5094A/MAX5094B

2.85

3

3.26

Gain (Notes 3, 4)

MAX5094C/D, MAX5095_

2.85

3

3.40

V/V

MAX5094A/B (Note 3)

0.95

1

1.05

MAX5094C/MAX5094D (Note 3)

0.275

0.300

0.325

Maximum Current-Sense Signal

0.275

0.300

0.325

V

Power-Supply Rejection Ratio

PSRR

12V

70

dB

Input Bias Current

-1

-2.5

µA

Delay From CS to OUT

50mV overdrive

60

ns

MOSFET DRIVER

OUT Low-Side On-Resistance

4.5

12

Ω

OUT High-Side On-Resistance

3.5

9

Ω

2

A

1

A

Rise Time

15

ns

Fall Time

22

ns

UNDERVOLTAGE LOCKOUT/STARTUP

Startup Voltage Threshold

7.98

8.4

8.82

V

Minimum Operating Voltage After

Turn-On

7.1

7.6

8.0

V

Undervoltage-Lockout Hysteresis

0.8

V

PWM

MAX5094A/MAX5094C/MAX5095A

94.5

96

97.5

Maximum Duty Cycle

MAX5094B/MAX5094D/MAX5095B/

MAX5095C

48

49.8

50

%

Minimum Duty Cycle

0%

SUPPLY CURRENT

Startup Supply Current

32

65

µA

Operating Supply Current

3

5

mA

24

26.5

V

THERMAL SHUTDOWN

Thermal Shutdown

Junction temperature rising

150

°C

Thermal Shutdown Hysteresis

4°C

SYNCHRONIZATION (MAX5095A/MAX5095B Only) (Note 5)

SYNC Frequency Range

20

1000

kHz

SYNC Clock Input High

Threshold

3.5

V

SYNC Clock Input-Low Threshold

0.8

V

SYNC Clock Input Minimum

Pulse Width

200

ns