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LM53600-Q1, LM53601-Q1

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SNAS660B – JUNE 2015 – REVISED FEBRUARY 2016

Product Folder Links: LM53600-Q1 LM53601-Q1

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Copyright © 2015–2016, Texas Instruments Incorporated

Electrical Characteristics (continued)

Limits apply over the recommended operating junction temperature range of –40°C to 150°C, unless otherwise noted.

Minimum and maximum limits are ensured through test, design or statistical correlation. Typical values represent the most

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(1)

Ensured by design, statistical analysis and production testing of correlated parameters; not tested in production.

(2)

High side current limit is a function of duty factor. Current limit value is highest at small duty factor and less at higher duty factors.

Switching frequency

spread spectrum, PWM operation

1.89

2.1

2.4

MHz

spectrum, PWM operation

1.89

2.1

2.4

and adjustable devices regardless of

output voltage

1.0

1.5

Sync frequency range

1.9

2.1

2.3

MHz

Sync input duty cycle range

High state input < 5.5 V and > 2.3 V

25%

75%

SYNC/MODE input threshold

voltage

SYNC/MODE input high

(MODE=FPWM)

1.5

V

SYNC/MODE input low (MODE =

AUTO with diode emulation)

0.4

SYNC/MODE input hysteresis

0.185

1

Frequency span of spread

±4%

Spread spectrum pattern

30

Hz

SYNC/MODE leakage current

1

µA

5

Mode change transition time

(1)

13.5 V

100

µs

13.5 V

60

High side switch current limit

(2)

LM53600-Q1 Duty cycle approaches

0%

1.0

1.35

1.65

A

LM53601-Q1 Duty cycle approaches

0%

1.5

1.83

2.1

Low side switch current limit

LM53600-Q1

0.65

0.78

0.93

A

LM53601-Q1

1.0

1.2

1.43

Zero-cross current limit

MODE/SYNC = Low

–0.01

A

Negative current limit

MODE/SYNC = High

LM53600-Q1

–0.7

A

LM53601-Q1

–0.7

Power switch on-resistance

High side MOSFET Rdson

220

m

Ω

Low side MOSFET Rdson

200

Enable input threshold voltage

- rising

Enable rising

1.7

-

2.0

V

Enable threshold hysteresis

0.40

-

0.55

V

Enable Wake-up threshold

0.4

V

Enable pin input current

2.7

µA

Internal Vcc voltage

3.05

V

3.15

Internal Vcc input under

voltage lock-out

VCC rising

2.7

V