LM25085QMYX datasheet(3/30 Pages) TI1

Teilenummer	LM25085QMYX

Bauteilbeschribung	LM25085, LM25085-Q1 42V Constant On-Time PFET Buck Switching Controller

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LM25085, LM25085-Q1

www.ti.com

SNVS593H – OCTOBER 2008 – REVISED MARCH 2013

Absolute Maximum Ratings

(1) (2)

VIN to GND

-0.3V to 45V

ISEN to GND

-0.3V to VIN + 0.3V

ADJ to GND

-0.3V to VIN + 0.3V

RT, FB to GND

-0.3V to 7V

VIN to VCC, VIN to PGATE

-0.3V to 10V

ESD Rating (3)

Human Body Model

2kV

Storage Temperature Range

-65°C to +150°C

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is intended to be functional. For specifications and test conditions, see the Electrical Characteristics.

(2)

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

specifications.

(3)

The human body model is a 100pF capacitor discharged through a 1.5k

Ω resistor into each pin.

Operating Ratings

(1)

VIN Voltage

4.5V to 42V

Junction Temperature

−40°C to + 125°C

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is intended to be functional. For specifications and test conditions, see the Electrical Characteristics.

Electrical Characteristics

Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C

to +125°C. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical values represent

the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the

following conditions apply: VIN = 24V, RT = 100kΩ.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VIN Pin

IIN

Operating Current

Non-Switching, FB = 1.4V (1)

1.25

1.75

mA

IQ

Shutdown Current

RT = 0V (1)

175

300

µA

VCC Regulator(2)

VCC(reg)

VIN - VCC

Vin = 9V, FB = 1.4V, ICC = 0mA

6.9

7.7

8.5

V

Vin = 9V, FB = 1.4V, ICC = 20mA

7.7

V

Vin = 42V, FB = 1.4V, ICC = 0mA

7.7

V

UVLOVcc

VCC Under-Voltage Lock-Out

VCC Increasing

3.8

V

Threshold

UVLOVcc Hysteresis

VCC Decreasing

260

mV

VCC(CL)

VCC Current Limit

FB = 1.4V

20

40

mA

PGATE Pin

VPGATE(HI)

PGATE High Voltage

PGATE Pin = Open

VIN -0.1

VIN

V

VPGATE(LO)

PGATE Low Voltage

PGATE Pin = Open

VCC

VCC+0.1

V

VPGATE(HI)4.5

PGATE High Voltage at Vin = 4.5V

PGATE Pin = Open

VIN -0.1

VIN

V

VPGATE(LO)4.5

PGATE Low Voltage at Vin = 4.5V

PGATE Pin = Open

VCC

VCC+0.1

V

IPGATE

Driver Output Source Current

VIN = 12V, PGATE = VIN - 3.5V

1.75

A

Driver Output Sink Current

VIN = 12V, PGATE = VIN - 3.5V

1.5

A

RPGATE

Driver Output Resistance

Source current = 500mA

2.3

Ω

Sink current = 500mA

2.3

Ω

Current Limit Detection

IADJ

ADJUST Pin Current Source

VADJ = 22.5V

32

40

48

µA

VCL OFFSET

Current Limit Comparator Offset

VADJ = 22.5V, VADJ - VISEN

-9

0

9

mV

(1)

Operating current and shutdown current do not include the current in the RT resistor.

(2)

VCC provides self bias for the internal gate drive.

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Product Folder Links: LM25085 LM25085-Q1

Ähnliche Beschreibung - LM25085QMYX

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Texas Instruments	LM25085	1Mb / 34P	[Old version datasheet] LM25085 / -Q1 42V Constant On-Time PFET Buck Switching Controller
National Semiconductor ...	LM25085	500Kb / 24P	42V Constant On-Time PFET Buck Switching Controller
Texas Instruments	LM25085A	1Mb / 31P	[Old version datasheet] 42V Constant On-Time PFET Buck Switching Controller
Texas Instruments	LM25085A	1Mb / 31P	[Old version datasheet] 42V Constant On-Time PFET Buck Switching Controller with 0.9V Reference
National Semiconductor ...	LM25085A	517Kb / 24P	42V Constant On-Time PFET Buck Switching Controller with 0.9V Reference
National Semiconductor ...	LM5085	463Kb / 22P	75V Constant On-Time PFET Buck Switching Controller
Texas Instruments	LM5085	441Kb / 23P	[Old version datasheet] 75V Constant On-Time PFET Buck Switching Controller
	LM5085	1Mb / 33P	[Old version datasheet] 75V Constant On-Time PFET Buck Switching Controller
	LM34919C-Q1	1Mb / 29P	[Old version datasheet] LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator
	LM5008A	1Mb / 22P	[Old version datasheet] 350 mA Constant On-Time Buck Switching Regulator

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