FP7152 datasheet(6/14 Pages) FEELING

6 / 14 page

FP7152

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Website: http://www.feeling-tech.com.tw

Rev. 0.64

6/14

DC Electrical Characteristics (Cont.) V

IN=12V, TA=25℃ (unless otherwise specified)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Duty Cycle Range of PWM Signal

Applied to ADJ Pin During Low

Frequency PWM Dimming Mode

DPWM (LF)

PWM Frequency <500Hz

PWM Amplitude= VREF

Measured on ADJ pin

0.01

Brightness Control Range

100:1

Duty Cycle Range of PWM Signal

Applied to ADJ Pin During High

Frequency PWM Dimming Mode

DPWM (HF)

PWM Frequency >10kHz

PWM Amplitude= VREF

Measured on ADJ Pin

0.16

Brightness Control Range

5 :1

Soft Start Time

TSS

Time Taken for Output

Current to Reach 90% of

Final Value after Voltage

on ADJ pin Has Risen

Above 0.3V

500

µs

Operating Frequency

fLX

ADJ Pin Floating

L=100μH (0.82Ω)

IOUT=700mA @ VLED=3.4V

Driving 1 LED

250

KHz

Minimum Switch ‘ON’ Time

TONmin LX switch ‘ON’

200

Minimum Switch ‘OFF’ Time

TOFFmin LX switch ‘OFF’

200

Recommended Maximum

Operating Frequency

fLXmax

MHz

Recommended Duty Cycle

Range of Output Switch at fLx max

DLX

0.3

0.7

Internal Comparator Propagation

Delay

TPD

Notes：

1. 100% brightness corresponds to VADJ = VADJ (nom) = VREF. Driving the ADJ pin above VREF will increase the

VSENSE threshold and output current proportionally.

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