LV5050NV

No.A1159-2/7

Continued from preceding page.

Parameter

Symbol

Conditions

Ratings

Unit

Allowable terminal voltage *2

1

HDRV,CBOOT

28

V

2

Between

HDRV, CBOOT and SW

6.5

V

3

VIN, ILIM, RSNS, SW, PGOOD

18

V

4

VLIN5, VDD, LDRV

6.5

V

5

COMP, FB, SS, UV_DELAY

TD, CT, CLKO

VLIN5+0.3

V

*2: The Allowable Terminal Voltage, the SGND+PGND pin becomes a standard except for No.2 of the allowable terminal voltage about No.2 of

the allowable terminal voltage, the SW pin becomes a standard.

Recommended Operating Condition at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Supply voltage

VIN

VIN and VLIN5 pins opens

7.5 to 16

V

Supply voltage

VIN

VIN and VLIN5 pins shorted

4.5 to 6.0

V

Electrical Characteristics at Ta = 25

°C, VIN=12V, Unless especially specified

Ratings

Parameter

Symbol

Conditions

min

typ

max

Unit

System

Reference voltage for comparing

VREF

0.818

0.826

0.834

V

Supply current 1

ICC1

TD = 5V (Except for the Ciss charge)

2

4

mA

Supply current 2

ICC2

TD = 0V

0.3

0.6

1.2

mA

5V supply voltage

VLIN5

IVIN5 = 0 to 10mA

4.75

5.00

5.25

V

Over-current sense comparator offset

VCLOS

-5

+5

mV

Over-current sense reference current

source

ICL

VIN = 10 to 14V

7.47

8.30

9.13

µA

Leading edge pulse blank time

TLEPB

120

150

Soft start source current

ISSSC

TD = 5V

-2.0

-3.5

-5.0

µA

Soft start sink current

ISSSK

TD = 0V

0.5

2.0

mA

Soft start clamp voltage

VSST0

When the voltage of the SS pin operating

1.2

1.6

2.0

V

UV_DELAY source current

ISCUVD

UV_DELAY = 2V

-6.1

-8.6

-12.0

µA

UV_DELAY sink current

ISKUVD

UV_DELAY = 2V

0.5

2

mA

UV_DELAY threshold voltage

VUVD

1.9

2.4

3.0

V

UV_DELAY operating voltage

VUVP

100% at VFB = VREF

87

92

97

%

VUVP detection hysteresis

∆VUVP

1.5

%

Output discharge transistor ON resistance

VSWON

5

10

20

Ω

Output part

CBOOT leakage current

ICBOOT

VCBOOT = VSW + 6.5V

10

µA

HDRV LDRV source current

ISCDRV

0.5

1.0

A

HDRV LDRV sink current

ISKDRV

0.5

1.0

A

HDRV lower ON resistance

RHDRV

IOUT = 500mA

0.5

1.5

3.0

Ω

LDRV lower ON resistance

RLDRV

IOUT = 500mA

0.5

1.5

3.0

Ω

Synchronous ON prevention dead time 1

Tdead1

LDRV OFF

→HDRV ON

50

70

120

ns

Synchronous ON prevention dead time 2

Tdead2

HDRV OFF

→LDRV ON

70

120

280

ns

Oscillator

Oscillation freaquency

fosc

CT = 130pF

280

330

380

kHz

Oscillation frequency range

foscop

250

1100

kHz

Maximum ON duty

DON max

CT = 130pF

83

90

79

%

Minimum ON time

TON min

CT = 130pF

100

ns

Upper-side voltage saw- tooth wave

VsawH

fOSC = 300kHz

1.5

2

2.6

V

Lower-side voltage saw-tooth wave

VsawL

fOSC = 300kHz

0.8

1

1.2

V

Continued on next page.