AS3685A-ZDFT-2Y80 Datasheet AS3685A-ZDFT-2Y80, AS3685B, AS3685A | P28-P30

Page 28 ams Datasheet

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AS3685A/AS3685B − External Components

Figure 40:

PCB Wire Inductance Example2

External Component Specifications

Figure 41:

External Components List

Note(s):

1. See section Usage of PCB Wire Inductance.

Part

Value

Tol

(Min)

Rating

(Max)

Notes

Package

(Min)

Min Typ Max

BAT

(1)

2.2μf ±20% 6.3V

Ceramic, X5R

e.g. Murata

GRM21BR71A225KA01L

0603

FLY1

FLY2

1.0μf ±20% 6.3V

Ceramic, X5R

e.g. Murata

GRM188R60J105K

0603

(0402,0405)

VCP

2.2μf ±20% 6.3V

Ceramic, X5R

e.g. Murata

GRM21BR71A225KA01L

0603

ISET

10kΩ 130kΩ ±1% Current Set Resistor 0201

TXMASK

See section ‘TXMask

function’

±1% TXMask Set Resistor 0201

LED

Flash LED

Battery

Connector

VSS VSS

AS3685

Pin VBAT

BAT1 CBAT2

LTOTAL = L1 + 10*L2

ams Datasheet Page 29

[v2-23] 2016-Mar-30 Document Feedback

AS3685A/AS3685B − Package Drawings & Markings

DFN10 (3 × 3mm)

Figure 42:

DFN10 (3x3mm) Package Drawing

Note(s):

1. Dimensioning & toleranceing confirm to ASME Y14.5M-1994

2. All dimensions are in millimeters. Angles are in degrees.

3. Dimension b applies to metallized terminal and is measured between 0.25mm to 0.30mm from terminal tip. dimension L1 represents

terminal full back from package edge up to 0.1mm is acceptable.

4. Coplanarity applies to the exposed heat slug as well as the terminal.

5. Radius on the terminal optional.

6. N is the total number of terminals.

Package Drawings & Markings

Green

RoHS

REF. MIN NOM MAX

A 0.80 0.90 1.00

A1 0 0.02 0.05

A3 0.20 REF

L 0.35 0.40 0.45

L1 - - 0.15

b 0.18 0.25 0.30

D3.00 BSC

E3.00 BSC

e0.50 BSC

D2 2.40 2.50 2.60

E2 1.60 1.70 1.80

aaa - 0.15 -

bbb - 0.10 -

ccc - 0.10 -

ddd - 0.05 -

eee - 0.08 -

fff - 0.10 -

N10

Page 30 ams Datasheet

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AS3685A/AS3685B − Package Drawings & Markings

Figure 43:

DFN Package Marking

Note(s):

1. AS8A for AS3685A or AS8B for AS3685B.

Figure 44:

DFN Package Code YYWWXZZ

YY WW X ZZ

Last two digits of the manu-

facturing year

Manufacturing week Plant identifier Letters for free choice

YYWW

XZZ

AS8A

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39

AS3685A-ZDFT-2Y80

Mfr. #:

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Manufacturer:

ams

Description:

LED Lighting Drivers Ultra Small 1000mA Charge Pump Wh LED

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