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Circuit Module Physical Layouts and Bill of Materials

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Table 2. Bill of Materials (continued)

Count Reference Design Value Description Size Part Number Manufacturer

6 R5, R6, R7, R8, R9, 1K Resistor, Chip, 1/16 0603 Std Std

R25 W, 5%

2 RT1, RT2 10K Thermistor 0.095 X 0.150 BN35-3H103 or Mitsubishi

103AT-2 Material or

Semitec

2 SW1, SW2 EVQ-PLHA15 Switch, Push button, 0.200 x 0.200 EVQ-PLHA15 Panasonic

Momentary, 1P1T, 50 inch

mA, 12 V

1 TB1 ED1514 Terminal Block, 2-pin, 0.27 x 0.25 ED555/2DS OST

6 A, 3.5 mm

2 TB2, TB3 ED1515 Terminal Block, 3-pin, 0.41 x 0.25 ED555/3DS OST

6 A, 3.5 mm

17 TP10, TP11, TP12, Test Point, White, 0.100 x 0.100 5002 Keystone

TP13, TP14, TP15, Thru Hole Color inch

TP16, TP17, TP18, Keyed

TP19, TP1, TP2, TP3,

TP4, TP5, TP6, TP7,

TP8, TP9

1 U1 BQ29440DRB IC, Voltage Protection VSON BQ29440DRB TI

with Automatic Cell

Balance for 2-, 3-, or

4-Cell Li-Ion Batteries

(2nd-Level Protection)

1 U2 BQ3050DBT IC, 2-, 3-, and TSSOP-38 BQ3050DBT TI

4-Series Battery Pack (DBT)

Manager

1 — PCB 108.161 x HPA729 Std

32.550 mm

Notes: 1. These assemblies are ESD sensitive, ESD precautions shall be observed.

2. These assemblies must be clean and free from flux and all contaminants.

Use of no clean flux is not acceptable.

3. These assemblies must comply with workmanship standards IPC-A-610 Class 2.

4. Ref designators marked with an asterisk ('**') cannot be substituted.

All other components can be substituted with equivalent MFG's components.

5. Assembly instruction for SW1: pay attention to its orientation

6. Make one SMBus connector wire assembly for each assembly produced, from J1 mate, 4–24 Awg wires and Crimp

terminals. Wire colors for Pin numbers are listed below. The wire assembly shall have a J1 mate on each end.

Red—Pin # 4 (Signal USB_5V)

Brown—Pin # 3 (Signal SDA)

White—Pin # 2 (Signal SCL)

Black—Pin # 1 (GND)

bq3050EVM SBS 1.1 Compliant Advanced Gas Gauge Battery Management SLUU532A–November 2011–Revised December 2011

Solution EVM

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