LM2636MTC datasheet(4/14 Pages) NSC

4 / 14 page

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

(All voltages are referenced to the PGND and SGND pins.)

BOOTV

18V

Junction Temperature

150˚C

DC Power Dissipation (Note 2)

1.42W

Storage Temperature

−65˚C to +150˚C

Soldering Time, Temperature

Wave (4 seconds)

Infrared (10 seconds)

Vapor Phase (75 seconds)

260˚C

240˚C

219˚C

ESD Susceptibility (Note 3)

2 kV

Recommended Operating

Conditions (Note 1)

Supply Voltage Range (V

CC)

4.5V to 5.5V

Junction Temperature Range

0˚C to +125˚C

Electrical Characteristics

CC = 5V unless otherwise indicated under the Conditions column. Typicals and limits appearing in plain type apply for TA =

J = +25˚C. Limits appearing in boldface type apply over 0˚C to +70˚C.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

BOOTV

FET Driver Supply

Voltage

DACOUT

5-Bit DAC Output

Voltage

VID4:0=01111

1.284

1.304

1.324

VID4:0=01101

1.385

1.406

1.427

VID4:0=01011

1.483

1.506

1.529

VID4:0=01001

1.585

1.609

1.633

VID4:0=00111

1.683

1.709

1.735

VID4:0=00101

1.784

1.811

1.838

VID4:0=00001

1.983

2.013

2.043

VID4:0=11101

2.173

2.206

2.239

VID4:0=11010

2.471

2.509

2.547

VID4:0=10111

2.768

2.81

2.852

∆V

OUT

DC Load Regulation

OUT=0 to 14A Figure 2

−5

DC Line Regulation

IN=4.75V to 5.25V Figure 2

Error Amplifier DC Gain

Error Amplifier Slew

Rate

V/µs

Error Amplifier Unity

Gain Bandwidth

MHz

Q_VCC

Operating V

CC Current

OUTEN=V

CC=5V, VID=10111

1.5

2.5

Shutdown V

CC Current

OUTEN Floating, VID0:4 Floating

1.5

Q_BOOTV

BOOTV Pin Quiescent

Current

BOOTV=12V, OUTEN=0, VID0:4

Floating

4µA

MAX

Maximum Duty Cycle

MIN

Minimum Duty Cycle

SENSE

SENSE Pin Resistance

to Ground

11.5

Ω

DS_SRC

FET Driver

Drain-Source ON

Resistance when

Sourcing Current

BOOTV=5V

Ω

DS_SINK

FET Driver

Drain-Source ON

Resistance when

Sinking Current

(Independent of BOOTV Voltage)

1.7

Ω

OSC

Oscillator Frequency

FA =84kΩ

250

300

350

kHz

FA =22kΩ

1000

FA = 10.5 kΩ

2000

MAX

IMAX Pin Sink Current

IMAX = 5V, VIFB = 6V, VCC =5V

130

180

230

µA

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