TS19370

Boost (Step-up) WLED Driver with OVP

2/8

Version: D08

Absolute Maximum Rating

Parameter

Symbol

Limit

Unit

Input Voltage

20

V

Supply Voltage (Recommended)

2.5 ~ 18

V

FB Voltage

10

V

SW Voltage

36

V

CTRL Voltage

10

V

Ambient Temperature Range

-40 to +85

Junction Temperature Range

-40 to +125

Function Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Input Voltage Range

2.5

--

18

V

Feedback Voltage

cycle

86

95

104

mV

FB Pin Bias Current

10

45

100

nA

--

1.9

2.5

mA

Supply Current

CTRL = 0V

--

0.1

1.0

uA

Switching Frequency

0.8

1.2

1.6

MHz

Switch Current Limit

--

320

--

mA

Maximum Duty Cycle

85

90

--

%

--

350

--

mV

Switch Leakage Current

--

0.01

5

µA

High

1.5

--

--

V

Low

--

--

0.4

V

CTRL Pin Bias Current

Ctrl = 2V

--

65

--

µA

Over Voltage Protection

OVP

--

30

--

V

Thermal Resistance

--

220

--

°C/W

Note:

Absolute maximum ratings are limits beyond which damage to the device may occur.

The maximum allowable power dissipation is a function of maximum function temperature, TJ(max), the junction to

ambient thermal resistance, θ JA , and the ambient temperature. The maximum allowable, power dissipation at any

ambient temperature is calculated using: PD(MAX)= [TJ(max)-TA]/θJA . Exceeding the maximum allowable power

dissipation will cause excessive die temperature. All limits at temperature extremes are guaranteed via correlation

using standard statistical methods