LTM4712

3

Rev. 0

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ELECTRICAL CHARACTERISTICS The

l

denotes the specifications that apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. RUN = 5V unless otherwise noted (Note 2).

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

l

5

36

V

Output Voltage Range

(Note 4)

l

1

36

V

Output DC Voltage

RFB = Open

RFB = 9.09k

1

12

V

V

Output DC Current Range (Note 5)

VIN = 5V, VOUT = 12V, 400kHz

VIN = 12V, VOUT = 12V, 400kHz

6

12

A

A

Quiescent Current Into VIN,

VIN = 12V, VOUT = 12V

RUN = 0V (Disabled)

RUN = 0.9V (Standby)

No load, MODE = OPEN (PSM)

No load, MODE=0V Forced Continuous Mode (FCM)

80

2.5

40

55

μA

mA

mA

mA

Voltage at FB Pin

Forced Continuous Mode (FCM)

l

0.99

0.98

1

1.01

1.02

V

V

Resistor Between VOUT and FB Pins

100

kΩ

Output Voltage Line Regulation

5V ≤ VIN ≤ 36V, VOUT = 12V, IOUT = 10mA, FCM , 400kHz l

0.02

0.1

%/V

Output Voltage Load Regulation

VIN = 12V, VOUT = 12V, 10mA < IOUT < 12A, FCM , 400kHz

0.5

%

l

0.8

%

Input Undervoltage Lockout

VIN Rising

VIN Falling

4.6

4.4

V

v

INTVCC Regulation Voltage

VIN = 6V to 36V

4.8

5

V

INTVCC Load Regulation

IINTVCC = 0mA to 10mA, VIN = 12V

0.3

%

Switching Frequency

RT = 58k

RT = 140k (Recommended)

RT = 200k

100

400

600

kHz

kHz

kHz

FREQ Pin Output Current

9

10

11

μA

RUN Pin Falling Threshold

RUN Pin Threshold 1 (Shutdown to Standby)

RUN Pin Threshold 2 (Standby to ON)

l

0.4

1.1

0.55

1.2

0.7

1.3

V

V

RUN Pin Current

RUN = 1V

RUN = 1.6V

2

6

µA

µA

Soft-Start Charging Current

2.5

µA

ISP Pin Input Current

VISP = VISN = 12V, VISP – VISN = 50 mV

14

µA

ISN Pin Input Current

VISP = VISN = 12V, VISP – VISN = 50 mV

14

µA

Average Current Sense Amplifier Output

VISP –VISN = 0mV

VISP –VISN = 50mV

200

1200

mV

mV

ISET Pin Output Current

14

15

16

µA

PGOOD Leakage Current

VPGOOD = 6.0V

±1

μA

PGOOD Trip Level, VFB Respect to Set

Regulated Voltage

VFB Ramping Negative

VFB Ramping Positive

–10

10

%

%

CLKOUT Output High

4.8

5

V

CLKOUT Output Low

0.2

V

EXTVCC Threshold

EXTVCC Threshold Rising

EXTVCC Threshold Falling

7.7

7.2

V

V

SYNC Input High Threshold

SYNC Pin Rising

SYNC Pin Falling

1.35

1

V

V

Synchronizable Frequency

SYNC = External Clock

100

600

kHz