LM2748MTC datasheet(3/37 Pages) TI1

tên linh kiện	LM2748MTC

Giải thích chi tiết về linh kiện	LM2745 / LM2748 Synchronous Buck Controller with Pre-Bias Startup

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LM2745, LM2748

www.ti.com

SNOSAL2E – APRIL 2005 – REVISED APRIL 2013

Absolute Maximum Ratings

(1) (2)

VCC

-0.3 to 7V

BOOT Voltage

-0.3 to 18V

ISEN

-0.3 to 14V

FREQ/SYNC Voltage

-0.5 to VCC + 0.3V

All other pins

-0.3 to VCC + 0.3V

Junction Temperature

150°C

Storage Temperature

−65°C to 150°C

Soldering Information

Lead Temperature (soldering, 10sec)

260°C

Infrared or Convection (20sec)

235°C

ESD Rating (3)

2kV

(1)

Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for

which the device operates correctly. Operating Ratings do not imply specified performance limits.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

(3)

ESD using the human body model which is a 100pF capacitor discharged through a 1.5 k

Ω resistor into each pin.

Operating Ratings

Supply Voltage Range, VCC

(1)

3V to 6V

BOOT Voltage Range

1V to 17V

Junction Temperature Range (TJ)

−40°C to +125°C

Thermal Resistance (

θJA)

155°C/W

(1)

The power MOSFETs can run on a separate 1V to 14V rail (Input voltage, VIN). Practical lower limit of VIN depends on selection of the

external MOSFET. See the MOSFET GATE DRIVERS section under Application Information for further details.

Electrical Characteristics

VCC = 3.3V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA= TJ= 25°C. Limits appearing in

boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are specified by design,

test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VFB

FB Pin Voltage

VCC = 3V to 6V

0.591

0.6

0.609

V

VON

UVLO Thresholds

VCC Rising

2.79

V

VCC Falling

2.42

VCC = 3.3V, VSD = 3.3V

LM2745

1.1

1.7

2.3

fSW = 600 kHz

LM2748

1.0

1.5

2.1

Operating VCC Current

mA

IQ_VCC

VCC = 5V, VSD = 3.3V

LM2745

1.3

2

2.6

fSW = 600 kHz

LM2748

1.0

1.8

2.6

Shutdown VCC Current

VCC = 3.3V, VSD = 0V

1

3

µA

tPWGD1

PWGD Pin Response Time

VFB Rising

10

µs

tPWGD2

PWGD Pin Response Time

VFB Falling

10

µs

ISS-ON

SS Pin Source Current

VSS = 0V

7

10

14

µA

ISS-OC

SS Pin Sink Current During Over

VSS = 2.0V

90

µA

Current

ISEN-TH

ISEN Pin Source Current Trip Point

25

40

55

µA

IFB

FB Pin Current

Sourcing

20

nA

ERROR AMPLIFIER

GBW

Error Amplifier Unity Gain Bandwidth

9

MHz

G

Error Amplifier DC Gain

118

dB

SR

Error Amplifier Slew Rate

2

V/µs

IEAO

EAO Pin Current Sourcing and

14

mA

Sinking Capability

16

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Product Folder Links: LM2745 LM2748

Số phần tương tự - LM2748MTC

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
National Semiconductor ...	LM2748MTC	1Mb / 23P	Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization
Texas Instruments	LM2748MTC	1Mb / 37P	[Old version datasheet] LM2745 / LM2748 Synchronous Buck Controller with Pre-Bias Startup, and Optional Clock
National Semiconductor ...	LM2748MTCX	1Mb / 23P	Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization
Texas Instruments	LM2748MTCX	1Mb / 37P	[Old version datasheet] LM2745 / LM2748 Synchronous Buck Controller with Pre-Bias Startup, and Optional Clock

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Mô tả tương tự - LM2748MTC

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LM2745MTCX	1Mb / 37P	[Old version datasheet] LM2745 / LM2748 Synchronous Buck Controller with Pre-Bias Startup, and Optional Clock
Texas Instruments	LM2747	1Mb / 38P	[Old version datasheet] Synchronous Buck Controller with Pre-Bias Startup, and Optional Clock Synchronization
National Semiconductor ...	LM2745	1Mb / 23P	Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization
National Semiconductor ...	LM2747	1,009Kb / 23P	Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization
Delta Electronics, Inc.	DNL	936Kb / 15P	Pre-bias startup
Delta Electronics, Inc.	DNT12SIP05	716Kb / 13P	Pre-bias startup
International Rectifier	IR3621	375Kb / 29P	2-PHASE / DUAL SYNCHRONOUS PWM CONTROLLER WITH OSCILLATOR SYNCHRONIZATION AND PRE-BIAS STARTUP
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Intersil Corporation	ISL6608CB	333Kb / 11P	Synchronous Rectified MOSFET Driver with Pre-Biased Load Startup Capability March 2004
Renesas Technology Corp	ISL6608	611Kb / 11P	Synchronous Rectified MOSFET Driver with Pre-Biased Load Startup Capability

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