LTM4650-1 datasheet(4/36 Pages) LINER

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LTM4636

4636f

For more information www.linear.com/LTM4636

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Remote Sense Amplifier

AV(VFB)

VFB Differential Gain

(Note 6)

V/V

GBP VFB Path

Gain Bandwidth Product

(Note 5)

MHz

General Control or Monitor Pins

ITMON

Temperature Monitor Current, TJ = 25°C Into 25kΩ

Temperature Monitor Current, TJ = 150°C Into 25kΩ

40.3

µA

ITMON(SLOPE)

Temperature Monitor Current Slope, RTMON = 25kΩ

0.144

µA/°C

VPGOOD

PGOOD Trip Level

VFB With Respect to Set Output

VFB Ramping Negative

VFB Ramping Positive

–7.5

7.5

VPGL

PGOOD Voltage Low

IPGOOD = 2mA

0.2

0.4

tPGOOD

VPGOOD High-to-Low Delay

µs

IPGOOD(OFF)

PGOOD Leakage Current

VPGOOD = 5V

–2

µA

VPG1(HYST)

PGOOD Trip Level

Hysteresis

2.5

INTVCC Linear Regulator

VINTVCC

Internal VCC Voltage Source 6V < VIN < 15V

5.3

5.5

5.7

VINTVCC Load Reg INTVCC Load Regulation

ICC = 0mA to 10mA

0.5

UVLO HYS

Controller UVLO Hysteresis (Note 6)

0.5

PVCC(UVLO)

Drivers and Power

MOSFETs UVLO

PVCC Rising

3.5

3.8

4.1

PVCC(HYS)

PVCC UVLO Hysteresis

0.45

PVCC

Power Stage Bias

12V Input, PVCC Load = 50mm

5.0

Oscillator and Phase-Locked Loop

fOSC

Oscillator Frequency

VPHSMD = 0V

RFREQ = 30.1kΩ

RFREQ = 47.5kΩ

RFREQ = 54.9kΩ

RFREQ = 75.0kΩ

Maximum Frequency

Minimum Frequency

210

540

625

945

1.2

250

600

750

1.05

290

660

825

1.155

0.2

kHz

MHz

IFREQ

FREQ Pin Output Current

VFREQ = 0.8V

µA

RMODE/PLLIN

MODE_PLLIN Input

Resistance

250

kΩ

VMODE/PLLIN

PLLIN Input Threshold

VMODE/PLLIN Rising

VMODE/PLLIN Falling

1.2

VCLKOUT

Low Output Voltage

High Output Voltage

Verified Levels

Measurements on CLKOUT

0.2

5.2

PWM-CLKOUT

PWM to Clockout Phase Delay

VPHSMD = 0V

VPHSMD = 1/4 INTVCC

VPHSMD = Float

VPHSMD = 3/4 INTVCC

VPHSMD = INTVCC

120

180

Deg

PWM/PWMEN Outputs

PWM

PWM Output High Voltage

ILOAD = 500µA

5.0

PWM Output Low Voltage

ILOAD = –500µA

0.5

elecTrical characTerisTics The

denotes the specifications which apply over the specified internal

operating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 12V, per the typical application in Figure 20.

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