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LTC3901

3901f

The

● denotes specifications which apply over the full operating

temperature range. VCC = 5V, TA = 25°C unless otherwise specified. (Note 3)

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Switching Characteristics (Note 8)

SYNC Input to Driver Output Delay

CME = CMF = 4700pF, VSYNC = ±5V

●

120

tr, tf

Driver Rise/Fall Time

CME = CMF = 4700pF, VSYNC = ±5V

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC3901E is guaranteed to meet performance specifications

from 0°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design; characterization and correlation

with statistical process controls.

Note 3: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to ground unless otherwise

specified.

Note 4: Supply current in normal operation is dominated by the current

needed to charge and discharge the external MOSFET gates. This current

will vary with supply voltage, switching frequency and the external

MOSFETs used.

Note 5: Both CSE+, CSE– and CSF+, CSF– current sense comparators have

the same performance specifications.

Note 6: The current sense comparator threshold has a 0.33%/°C

temperature coefficient (TC) to match the TC of the external MOSFET

RDSON.

Note 7: Guaranteed by design, not subject to test.

Note 8: Rise and fall times are measured using 10% and 90% levels. Delay

times are measured from ±1.4V at SYNC input to 20%/80% levels at the

driver output.

Timeout vs VCC

Timeout vs Temperature

Timeout vs RTMR

5.25

5.20

5.15

5.10

5.05

5.00

4.95

4.90

4.85

4.80

4.75

VCC (V)

5.25

5.20

5.15

5.10

5.05

5.00

4.95

4.90

4.85

4.80

4.75

3901 G01

TEMPERATURE (°C)

–50

3901 G02

–25

100

125

RTMR (kΩ)

3901 G03

102030 40

50 60 70

8090 100

TA = 25°C

RTMR = 51k

CTMR = 470pF

TA = 25°C

VCC = 5V

CTMR = 470pF

VCC = 5V

RTMR = 51k

CTMR = 470pF

3901 G04

VCC = 5V, 11V

CS+ INPUT CURRENT (mA)

3901 G05

TEMPERATURE (°C)

–50

100

3901 G06

050

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

–25

125

TEMPERATURE (°C)

–50

100

050

–25

125

TA = 25°C

VCC = 5V

VCC = 11V

VCS(MAX) Clamp Voltage vs CS

Input Current

Current Sense Threshold vs

Temperature

SYNC Positive Threshold vs

Temperature

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