ISL97653AIRZ(2008) 데이터 시트보기 (PDF) - Intersil

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ISL97653AIRZ
(Rev.:2008)

5-Channel Integrated LCD Supply

Intersil 

ISL97653A

Typical Performance Curves (Continued)

Ch1 = LXL (400ns/DIV)

Ch2 = ILXL (400ns/DIV)

Ch1 = LXL (400ns/DIV)

Ch2 = ILXL (400ns/DIV)

FIGURE 13. BOOST CURRENT LIMIT

FIGURE 14. BUCK CURRENT LIMIT

Pin Descriptions

PIN NUMBER

1

PIN NAME

PVIN2

2

CB

3, 4

LXL1, 2

5, 6

PGND3,4

7

CM2

8

FBL

9

VL

10

VREF

11

FBN

12

SUPN

13

NOUT

14

PGND5

15

C1P

16

C1N

17

C2P

18

C2N

19

SUPP

20

FBP

21

POUT

22

COM

23

DRN

24

CTL

DESCRIPTION

Logic buck supply voltage. This is also the analog supply from which the VL is generated. Needs at

least 1µF bypassing.

Logic buck boot strap pin. Generate the gate drive voltage for the N-Channel MOSFET by connecting

a 1µF cap to the switching node LXL1,2.

Logic buck switching node. Source of the high side internal power N-Channel MOSFET for the Buck.

Logic buck ground pin.

Buck compensation pin. An RC network is recommended. Increase R for better transient response at

the expense of stability.

Logic buck feedback pin. High impedance input to regulate at 1.215V.

5.25V internal regulator output. Bypass with a 4.7µF cap. Ref voltage is generated from VL.

Reference voltage output. Bypass with a low valued cap for transients - recommend 220nF. Should not

be greater than 5 times CDEL cap to ensure correct start-up sequence.

Negative charge pump feedback pin. High impedance input to regulate to 0.203V.

Negative charge pump supply voltage. Can be the same as or different from AVDD.

Negative charge pump driver output.

Charge pump ground pin.

Charge pump capacitor 1, positive connection.

Charge pump capacitor 1, negative connection.

Charge pump capacitor 2, positive connection.

Charge pump capacitor 2, negative connection.

Positive charge pump supply. Can be the same as or different from AVDD.

Positive charge pump feedback pin. High impedance input to regulate at 1.215V

VON charge pump output.

High voltage switch control output. VON slice output.

Lower reference voltage for VON slice output. Usually connected to AVDD.

Input control pin for VON slice output.

9

FN6367.1

February 21, 2008

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