LTP8800-1A

4

Rev. B

For more information www.analog.com

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTP8800-1AI is guaranteed over the full 0°C to 125°C

operating junction temperature range. Operating lifetime is derated at

junction temperatures greater than 125°C.

Note 3: The LTP8800-1AI includes overtemperature protection that is

intended to protect the device during thermal overload conditions. Internal

junction temperature may exceed 150°C if the overtemperature circuitry

is active.

Note 4: All currents into device pins are positive; all currents out of

device pins are negative. All voltages are referenced to ground unless

otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOUTMON

Output Voltage Monitor

VIN = 54V, VOUT = 0.8V, IOUT = 0A,

TJ = 25°C

±0.5

%

VIN = 54V, VOUT = 0.8V, IOUT = 0A,

TJ = 0°C to 125°C

l

–1.5

+1.5

%

VINMON

Input Voltage Monitor

VIN = 45V to 65V, VOUT = 0.8V, IOUT = 75A

l

±2

%

TMON

Temp Monitor

VIN = 54V, VOUT = 0.8V, IOUT = 75A

l

±10

°C

Leakage Current Digital Inputs (CTRL, SDA, SCL, SYNC)

IDGTL

Input Leakage Current

0V ≤ VPIN ≤ 3.6V

l

10

µA

Control Section

VS–CM

VS– Common Mode Range

l

–100

100

mV

VMRGN

Output Voltage Margin Range

0.5

1.10

V

VOUT(OVLO)

Output Overvoltage Protection

1.2

V

Digital Inputs (CTRL, SDA, SCL, SYNC)

VIH

Input High Threshold Voltage

V3V3 = 3.3V

l

2.1

V

VIL

Input Low Threshold Voltage

V3V3 = 3.3V

l

0.8

V

Digital Outputs (SDA, SMBALERT)

VOL

Output Low Voltage

l

0.6

V

PMBus Timing Characteristics (SDA, SCL)

fSCL

Serial Bus Frequency

l

10

400

kHz

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C.

TYPICAL PERFORMANCE CHARACTERISTICS

600mVOUT Efficiency and Power

Loss vs Output Current

750mVOUT Efficiency and Power

Loss vs Output Current

EFFICIENCY

POWER LOSS

7V0 AND 3V3 LOSSES INCLUDED

45VIN

54VIN

65VIN

LOAD CURRENT (A)

10

30

50

70

90

110 130 150

50

55

60

65

70

75

80

85

90

4

6

8

10

12

14

16

18

20

88001a G01

EFFICIENCY

POWER LOSS

7V0 AND 3V3 LOSSES INCLUDED

45VIN

54VIN

65VIN

LOAD CURRENT (A)

10

30

50

70

90

110 130 150

50

55

60

65

70

75

80

85

90

4

6

8

10

12

14

16

18

20

88001a G02