LM2642MTCX datasheet(5/31 Pages) TI

Il numero della parte	LM2642MTCX

Spiegazioni elettronici	LM2642 Two-Phase Synchronous Step-Down Switching Controller

Download	31 Pages

Scroll/Zoom	100%

Produttore elettronici	TI [Texas Instruments]

Homepage	http://www.ti.com

Logo

5 / 31 page

LM2642

www.ti.com

SNVS203I – MAY 2002 – REVISED APRIL 2013

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, VIN = 15V, GND = PGND = 0V, VLIN5 = VDD1 = VDD2. Limits appearing in boldface type apply

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

appearing in plain type are measured using low duty cycle pulse testing with TA = 25°C

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

design, test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

System

ΔVOUT/VOUT

Load Regulation

VIN = 15V, Vcompx = 0.5V to 1.5V

0.04

%

ΔVOUT/VOUT

Line Regulation

5.5V

≤ VIN ≤ 30V, Vcompx =1.25V

0.04

%

VFB1_FI2

Feedback Voltage

5.5V

≤ VIN ≤ 30V

1.215

1.238

1.260

0°C to 125°C

1.217

1.259

V

-40°C to 125°C

1.212

1.261

IVIN

Input Supply Current

VON_SSx > 2V

1.0

mA

5.5V

≤ VIN ≤ 30V

2.0

Shutdown (3)

37

µA

VON_SS1 = VON_SS2= 0V

110

VLIN5

VLIN5 Output Voltage (4)

IVLIN5 = 0 to 25mA,

4.70

5

5.30

5.5V

≤ VIN ≤ 30V

V

-40°C to 125°C

4.68

5.30

VCLos

Current Limit Comparator

±2

±7.0

mV

Offset (VILIMX

−VRSNSX)

ICL

Current Limit Sink Current

9

10

11

µA

-40°C to 125°C

8.67

11

Iss_SC1,

Soft-Start Source Current

VON_ss1 = VON_ss2 = 1.5V (on)

0.5

2

5.0

µA

Iss_SC2

Iss_SK1,

Soft-Start Sink Current

VON_ss1 = VON_ss2 = 2V

2

5.2

10

µA

Iss_SK2

VON_SS1,

Soft-Start On Threshold

0.7

1.12

1.4

V

VON_SS2

VSSTO

Soft-Start Timeout

(5)

3.3

V

Threshold

Isc_uvdelay

UV_DELAY Source Current

UV-DELAY = 2V

2

5

9

µA

Isk_uvdelay

UV_DELAY Sink Current

UV-DELAY = 0.4V

0.2

0.48

1.2

mA

VUVDelay

UV_DELAY Threshold

2.3

V

Voltage

VUVP

FB1, FB2, Under Voltage

As a percentage of nominal output voltage

75

80

86

%

Protection Latch Threshold

(falling edge)

Hysteresis

4

%

VOVP

VOUT Overvoltage

As a percentage measured at VFB1, VFB2

107

113

122

%

Shutdown Latch Threshold

Vpwrbad

Regulator Window Detector

As a percentage of output voltage

Thresholds (PGOOD1 from

86.5

90.3

94.5

%

High to Low)

Vpwrgd

Regulator Window Detector

Thresholds (PGOOD1 from

91.5

94

97.0

%

Low to High)

Swx_R

SW1, SW2 ON-Resistance

VSW1 = VSW2 = 2V

420

480

535

Ω

Gate Drive

ICBOOT

CBOOTx Leakage Current

VCBOOT1 = VCBOOT2 = 7V

10

nA

(1)

A typical is the center of characterization data measured with low duty cycle pulse tsting at TA = 25°C. Typicals are not ensured.

(2)

All limits are specified. All electrical characteristics having room-temperature limits are tested during production with TA = TJ = 25°C. All

hot and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical

process control.

(3)

Both switching controllers are off. The linear regulator VLIN5 remains on.

(4)

The output voltage at the VLIN5 pin may be as high as 5.9V in shutdown mode (ON/SS1 = ON/SS2 = 0V).

(5)

When SS1 and SS2 pins are charged above this voltage and either of the output voltages at Vout1 or Vout2 is still below the regulation

limit, the under voltage protection feature is initialized.

Submit Documentation Feedback

5

Product Folder Links: LM2642

Codice articolo simile - LM2642MTCX

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Texas Instruments	LM2642MTCX	1Mb / 31P	[Old version datasheet] Two-Phase Synchronous Step-Down Switching Controller
Texas Instruments	LM2642MTCX/NOPB	1Mb / 31P	[Old version datasheet] Two-Phase Synchronous Step-Down Switching Controller

More results

Descrizione simile - LM2642MTCX

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Texas Instruments	LM2642	1Mb / 31P	[Old version datasheet] Two-Phase Synchronous Step-Down Switching Controller
National Semiconductor ...	LM2642	643Kb / 20P	Two-Phase Synchronous Step-Down Switching Controller
National Semiconductor ...	LM2648	1,017Kb / 23P	Two-Phase, Synchronous Step-Down 3-Channel Switching Regulator Controller
Linear Technology	LTC3850	595Kb / 38P	Dual, 2-Phase Synchronous Step-Down Switching Controller
	LTC3850-2	401Kb / 36P	Dual, 2-Phase Synchronous Step-Down Switching Controller
	LTC3850	522Kb / 36P	Dual, 2-Phase Synchronous Step-Down Switching Controller
	LTC3850-2	413Kb / 36P	Dual, 2-Phase Synchronous Step-Down Switching Controller
	LTC3850EUFDTRPBF	595Kb / 38P	Dual, 2-Phase Synchronous Step-Down Switching Controller
	LTC3850-1	595Kb / 38P	Dual, 2-Phase Synchronous Step-Down Switching Controller
Semtech Corporation	SC2443	1Mb / 22P	Dual-Phase Single or Two Output Synchronous Step-Down Controller

More results

LM2642MTCX Scheda tecnica(PDF) 5 Page - Texas Instruments

LM2642MTCX Scheda tecnica(HTML) 5 Page - Texas Instruments

Codice articolo simile - LM2642MTCX

Descrizione simile - LM2642MTCX

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Scheda tecnica Scarica

Link URL