LM5116-HT

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SLVSBS8B – OCTOBER 2013 – REVISED JANUARY 2014

Operating Ratings

(1)

VIN

6 to 80

V

VCC, VCCX

4.75 to 15

V

HB to SW

4.75 to 15

V

DEMB to GND

-0.3 to 2

V

Junction Temperature

-55 to 175

°C

(1)

Note: RAMP, COMP are output pins. As such they are not specified to have an external voltage applied.

Electrical Characteristics

Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature range of -55°C to

+175°C and are provided for reference only. Unless otherwise specified, the following conditions apply: VIN = 48V,

VCC = 7.4 V, VCCX = 0 V, EN = 5 V, RT = 16 kΩ, no load on LO and HO.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VIN Supply

IBIAS

VIN Operating Current

VCCX = 0 V, VIN = 48 V

5

7

mA

VCCX = 0 V, VIN = 80 V

5.9

8

mA

IBIASX

VIN Operating Current

VCCX = 5 V, VIN = 48 V

1.2

1.7

mA

VCCX = 5 V, VIN = 80 V

1.6

2.3

mA

ISTDBY

VIN Shutdown Current

EN = 0 V, VIN = 48 V

1

10

µA

EN = 0 V, VIN = 80 V

1

µA

VCC Regulator

VCC(REG)

VCC Regulation

7.1

7.4

7.7

V

VCC LDO Mode Turn-off

10.6

V

VCC Regulation

VIN = 6 V

5.0

5.9

6.0

V

VCC Sourcing Current Limit

VCC = 0 V

12

26

mA

VCCX Switch Threshold

VCCX Rising

4.3

4.5

5

V

VCCX Switch Hysteresis

0.25

V

VCCX Switch RDS(ON)

ICCX = 10 mA

3.8

7

Ω

VCCX Leakage

VCCX = 0 V

-200

nA

VCCX Pull- down Resistance

VCCX = 3 V

100

k

Ω

VCC Under-voltage Threshold

VCC Rising

4

4.5

5

V

VCC Under-voltage Hysteresis

0.2

V

HB DC Bias Current

HB - SW = 15 V

125

200

µA

EN Input

VIL max

EN Input Low Threshold

0.5

V

VIH min

EN Input High Threshold

3.3

V

EN Input Bias Current

VEN = 3 V

-9

-3

1

µA

EN Input Bias Current

VEN = 0.5 V

-2

0

2

µA

EN Input Bias Current

VEN = 80 V

20

90

µA

UVLO Thresholds

UVLO Standby Threshold

UVLO Rising

1.170

1.215

1.262

V

UVLO Threshold Hysteresis

0.1

V

UVLO Pull-up Current Source

UVLO = 0 V

5.4

µA

UVLO Pull-down RDS(ON)

80

240

Ω

Soft Start

SS Current Source

SS = 0 V

8

11

14

µA

SS Diode Emulation Ramp Disable

SS Rising

3

V

Threshold

SS to FB Offset

FB = 1.25 V

160

mV

SS Output Low Voltage

Sinking 100 µA, UVLO = 0 V

45

mV

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