MAX8645X 查看數據表（PDF） - Maxim Integrated

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比赛名单

MAX8645X

1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN

Maxim Integrated 

1x/1.5x/2x White LED Charge Pump with

Two LDOs in 4mm x 4mm TQFN

Table 3. Recommended Components for Figure 2

DESIGNATION

C1, C5

C3, C4, C6, C7

C8

D1–D4

D5 (D5–D8)

RSETM, RSETF

VALUE

10µF

1µF

0.01µF

—

—

As

required

MANUFACTURER

TDK

TDK

TDK

Nichia

Nichia

Panasonic

Vishay

PART

C2012X5R0J106M

C1005X5R0J105M

C1005X7R1E103K

NSCW215T

NBCW011T

—

DESCRIPTION

10µF ±20%, 6.3V X5R ceramic capacitors (0805)

1µF ±20%, 6.3V X5R ceramic capacitors (0402)

0.01µF ±10%, 25V X7R ceramic capacitor (0402)

White LEDs

White LEDs, 4 LEDs in one package

1% resistors

PCB Layout and Routing

The MAX8645X/MAX8645Y are high-frequency,

switched-capacitor voltage regulators. For best circuit

performance, use a solid ground plane and place CIN,

COUT, C3, and C4 as close as possible to the IC. There

should be no vias on CIN. Connect GND and PGND to

the exposed paddle directly under the IC. Refer to the

MAX8645Y evaluation kit for an example.

PROCESS: BiCMOS

Chip Information

Package Information

For the latest package outline information and land patterns, go

to www.maxim-ic.com/packages.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

28 TDFN-EP

T2844-1

21-0139

TOP VIEW

Pin Configuration

C1N 22

C1P 23

PGND 24

OUT 25

C2P 26

C2N 27

P1 28

21 20 19 18 17 16 15

MAX8645X

MAX8645Y

14 M3

13 M4

12 M5

11 M6

10 F1

9 F2

8 SETM

1 23 4 56 7

THIN QFN

(4mm x 4mm, 0.4mm LEAD PITCH)

+ DENOTES A LEAD-FREE PACKAGE.

______________________________________________________________________________________ 13

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