TS19376CY5-RMG datasheet(2/8 Pages) TSC

2 / 8 page

TS19376

1A Step-down High Brightness LED Driver

2/8

Version: A12

Electrical Specifications (VIN=12V, TA =25

oC, unless otherwise noted)

Characteristics

Symbol

Conditions

Min

Typ

Max

Units

Input voltage

VIN

Under voltage lock out

VUVLO

VIN rising

UVLO Hysterisis

VUVLO_hys

VIN falling

1000

Max. Switching Frequency

FSW

MHZ

Current Sense

Mean current sense threshold voltage

VCSN

VIN–VCSN

120

130

140

Sense threshold hysteresis

VCSN_hys

±15

CSN Pin Input Current

ICSN

VIN–VCSN = 50mV

0.5

µA

DIM Input

DIM input voltage High

VDIM_H

2.0

DIM input voltage Low

VDIM_L

0.3

Max. DIM Frequency

fDIM

fOSC = 500kHz

kHZ

Duty cycle range of low frequency dimming

DPWM_LF

fDIM = 100Hz

0.02%

Brightness control range

5000:1

Duty cycle range of high frequency dimming

DPWM_HF

fDIM = 20kHz

Brightness control range

25:1

DIM pull up resistor to Internal

supply voltage

RDIM

300

KΩ

DIM input leakage low

IDIM_L

VDIM = 0

µA

Output Switch

Saturation Voltage

VSAT

IOUT = 0.3A

0.8

1.0

Saturation Voltage

VSAT

IOUT = 0.8A

1.0

1.2

Continuous SW Current

ISWmean

1.0

SW Leakage Current

ILEAK

0.5

µA

Thermal Shutdown

Thermal Shutdown Threshold

TSD

150

°C

Thermal Shutdown hysteresis

TSD-hys

°C

TS19376CY5-RMG 数据表(PDF) 2 Page - Taiwan Semiconductor Company, Ltd

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