LM2642

SNVS203I – MAY 2002 – REVISED APRIL 2013

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

over the specified operating junction temperature range, (-20°C to +125°C, if not otherwise specified). Specifications

(1), (2). Min/Max limits are specified by

design, test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

HDRVx and LDRVx Source

0.5

A

Current

HDRVx=LDRVx=2.5V

HDRVx Sink Current

0.8

A

= 2.5V

LDRVx Sink Current

1.1

A

= 2.5V

HDRV1 & 2 Source On-

3.1

Ω

Resistance

HDRV1 & 2 Sink On-

1.5

Ω

Resistance

LDRV1 & 2 Source On-

3.1

Ω

Resistance

LDRV1 & 2 Sink On-

1.1

Ω

Resistance

Oscillator

Oscillator Frequency

260

300

340

kHz

-40°C to 125°C

257.5

340

Don_max

Maximum On-Duty Cycle

96

98

HDRV1 and HDRV2

%

-40°C to 125°C

95.64

Minimum On-Time

166

ns

HDRV1 and HDRV2 Delta

ON/SS1 = ON/SS2 = 2V

20

150

ns

On Time

Error Amplifier

Feedback Input Bias

65

±200

nA

Current

COMP Output Source

18

113

Current

µA

0°C to 125°C

32

-40°C to 125°C

6

COMP Output Sink Current

18

108

µA

0°C to 125°C

32

-40°C to 125°C

6

gm1, gm2

Transconductance

650

µmho

Current Sense Amplifier

4.2

5.2

7.5

(1&2) Gain

Voltage References and Linear Voltage Regulators

UVLO

VLIN5 Under-voltage

ON/SS1, ON/SS2 transition

Lockout

from low to high

3.6

4.0

4.4

V

Threshold Rising

Logic Outputs

PGOOD Low Sink Current

0.60

0.95

mA

PGOOD High Leakage

5

200

nA

Current

6

Submit Documentation Feedback

Copyright © 2002–2013, Texas Instruments Incorporated

Product Folder Links: LM2642