4.5V to 40V Input Automotive

Flyback/Boost/SEPIC Power-Supply Controllers

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3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

OSCILLATOR (RTCT)

Oscillator Frequency Range

15

1000

kHz

RTCT Peak Trip Level

V

RTCT Valley Trip Level

V

RTCT Discharge Current

1.30

1.33

1.36

mA

RT = 13.7k

Ω, CT = 4.7nF,

-4

+4

RT = 13.7k

Ω, CT = 560pF,

-4

+4

RT = 21k

Ω, CT = 100pF,

-5

+5

Oscillator Frequency Accuracy

(Note 2)

RT = 7k

Ω, CT = 100pF,

-7

+7

%

MAX15004A/B

50

Maximum PWM Duty Cycle

(Note 3)

MAX15005A/B,

RT = 13.7k

Ω, CT = 560pF,

78.5

80

81.5

%

Minimum On-Time

110

170

ns

SYNC Lock-In Frequency Range

(Note 4)

RT = 13.7k

Ω, CT = 560pF,

102

200

SYNC High-Level Voltage

2V

SYNC Low-Level Voltage

0.8

V

SYNC Input Current

-0.5

+0.5

µA

SYNC Minimum Input Pulse Width

50

ns

ERROR AMPLIFIER/SOFT-START

Soft-Start Charging Current

8

15

21

µA

SS Reference Voltage

1.215

1.228

1.240

V

SS Threshold for HICCUP Enable

1.1

V

FB Regulation Voltage

COMP = FB,

1.215

1.228

1.240

V

FB Input Offset Voltage

COMP = 0.25V to 4.5V,

-5

+5

mV

FB Input Current

-300

+300

nA

COMP Sink Current

3

5.5

mA

ELECTRICAL CHARACTERISTICS (continued)