AIC1648CGTR datasheet(6/10 Pages) AIC

Part #	AIC1648CGTR

Description	Built-in OVP White LED Step-Up Converter

Download	10 Pages

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Manufacturer	AIC [Analog Intergrations Corporation]

Direct Link	http://www.analog.com.tw

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6 / 10 page

AIC1648

TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

Temperature (

°C)

Fig. 14 Output voltage vs. temperature

-40

-20

0

20

40

60

80

100

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

6 Samples' Temperature Data

3 LEDs

ILED=20mA

Temperature (

°C)

Fig. 15 LED Current vs. Temperature

-80

-60

-40

-20

0

20

40

60

80

100

0

5

10

15

20

25

4 LEDs

VIN=4.2V

VIN=3.6V

VIN=3.3V

VIN=2.5V

BLOCK DIAGRAM

CC

*

RC*

RS*

M1

*

-

+

PWM

Comparator

27V

OVP

Over Voltage

Comparator

-

+

95mV

VIN

FB

Soft Start

Internal

VREF

+

-

Error

AMP

GND

SW

PWM/PFM

Control

SHDN

Driver

+

-

Current AMP.

Control

Logic

1.2MHz

Oscillator

Slope

Compensation

6

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AIC1648CGTR Datasheet(PDF) 6 Page - Analog Intergrations Corporation

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