LTC6905

7

6905fa

APPLICATIO S I FOR ATIO

JITTER AND STRAY CAPACITANCE ON THE SET PIN

(PIN 3)

The stray capacitance on the SET pin (Pin 3) should be

limited to 10pF or less to avoid increased jitter or unstable

oscillation.

LTC6905 SUGGESTED CRITICAL COMPONENT

LAYOUT

In order to provide the specified performance, it is re-

supply bypass capacitor be placed as close as possible to

the LTC6905. The following additional rules should be

followed for best performance:

1) The bypass capacitor must be placed as close as

possible to the LTC6905, and no vias should be placed

between the capacitor and the LTC6905. The bypass

capacitor must be on the same side of the circuit board

as the LTC6905.

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

should be closely shared with the bypass capacitor. The

board from the LTC6905, directly underneath the by-

pass capacitor.

3) If a ground plane is used, the connection of the LTC6905

to the ground plane should be as close as possible to the

LTC6905 GND pin and should be composed of multiple,

high current capacity vias.

PACKAGE DESCRIPTIO

S5 Package

5-Lead Plastic TSOT-23

(Reference LTC DWG # 05-08-1635)

1.50 – 1.75

(NOTE 4)

2.80 BSC

0.30 – 0.45 TYP

5 PLCS (NOTE 3)

DATUM ‘A’

0.09 – 0.20

(NOTE 3)

S5 TSOT-23 0302

PIN ONE

2.90 BSC

(NOTE 4)

0.95 BSC

1.90 BSC

0.80 – 0.90

1.00 MAX

0.01 – 0.10

0.20 BSC

0.30 – 0.50 REF

NOTE:

1. DIMENSIONS ARE IN MILLIMETERS

2. DRAWING NOT TO SCALE

3. DIMENSIONS ARE INCLUSIVE OF PLATING

4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR

5. MOLD FLASH SHALL NOT EXCEED 0.254mm

6. JEDEC PACKAGE REFERENCE IS MO-193

3.85 MAX

0.62

MAX

0.95

REF

RECOMMENDED SOLDER PAD LAYOUT

PER IPC CALCULATOR

1.4 MIN

2.62 REF

1.22 REF

Figure 2. LTC6905 Suggested Critical Component Layout

LTC6905

6905 F02

C

R