Demonstration board description

UM1054

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Doc ID 18463 Rev 1

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Demonstration board description

The STEVAL-ISB013V1 is a demonstration board designed to help the user evaluate the

performance of the STC3105.

Figure 3.

Demonstration board schematic

1.

Pull-up resistors are not mounted on the board. The user must either mount them on the board to pull up to

Table 1.

Bill of materials

Reference

Part/value

Footprint

Description

U1

STC3105

TDFN8

3 mm x 2 mm

Battery monitoring integrated circuit from

STMicroelectronics

R1

0

Ω

0402

Strap

R2

0

Ω

0402

Isolate current to GND plane. Not necessary

on the user’s PCB.

Rcg

20 m

Ω / ±1%

0805

Shunt resistor

Rup1

4.7 k /

±5%

0402

Pull-up resistor is not mounted on the board

Rup2

4.7 k /

±5%

0402

Pull-up resistor is not mounted on the board

Rup3

4.7 k /

±5%

0402

Pull-up resistor is not mounted on the board

C1

1 µF / 16 V / X7R

0402

Optional filtering capacitor

C2

1 µF / 10 V / X7R

0402

Decoupling capacitor

ALM

SDA

SCL

GND

VIN

VCC

NC

CG

C1

1uF

C2

1uF

R1

0

Rcg

20m

R2

0

Rup1

(1)

4.7k

Rup2

(1)

4.7k

Rup3

(1)

4. 7k

GND

SCL

SDA

ALM

VCC

CG-

CG+

VCC

VIN

U1

STC3105

AM045052v1