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Schematic, Physical Layouts and Bill of Materials

5.3 Bill of Materials

Table 2. HPA740A Bill of Materials

Count RefDes Value Description Size Part Number MFR

2 C1, C5 0.1 µF Capacitor, Ceramic, 25V, X7R, 10% 1206 Std Std

0 C2, C4 Open Capacitor, Ceramic, 25V, X7R, 10% 1206 Std Std

1 C3 1 µF Capacitor, Ceramic, 6.3V, X5R, 20% 0805 Std Std

1 C6 0.1 µF Capacitor, Ceramic, 25V, X7R, 10% 0603 Std Std

7 C101, C102, C103, 1 µF Capacitor, Ceramic, 10V, X5R, 10% 0603 ECJ-1VB1A105K Panasonic

C104, C105, C106,

C107

1 D1 Red Diode, LED, Red, 1.8-V, 20-mA, 20-mcd 0603 LTST-C190CKT Liteon

1 D101 BZX84C10LT1G Diode, Zener, 10-V, 350-mW SOT-23 BZX84C10LT1G On Semi

2 J1, J3 ED555/2DS Terminal Block, 2-pin, 6-A, 3.5mm 0.27 x 0.25 ED555/2DS OST

1 J2 ED555/4DS Terminal Block, 4-pin, 6-A, 3.5mm 0.55 x 0.25 inch ED555/4DS OST

16 JP1, JP2, JP3, PEC02SAAN Header, Male 2-pin, 100mil spacing, 0.100 inch x 2 PEC02SAAN Sullins

JP101, JP102,

JP103, JP104,

JP105, JP106,

JP107, JP108,

JP109, JP110,

JP111, JP112, JP113

1 Q101 MMBT3904LT1G Bipolar, NPN, 40-V, 200-mA,225-mW SOT23 MMBT3904LT1G On Semi

1 R1 24.3k Resistor, Chip, 1/16W, 1% 0603 Std Std

0 R101 Resistor, Chip, 1/16W, 1% 0603 Std Std

3 R102, R106, R3 1.00k Resistor, Chip, 1/16W, 1% 0603 Std Std

3 R103, R107, R110 0 Resistor, Chip, 1/16W, 1% 0603 Std Std

3 R104, R111, R113 100k Resistor, Chip, 1/16W, 1% 0603 Std Std

1 R108 100 Resistor, Chip, 1/16W, 1% 0603 Std Std

1 R109 2.00k Potentiometer, 1/4 in. Cermet, 12-Turn, Top-Adjust 0.25x0.17 3266W-1-202LF Bourns

1 R2 11.3k Resistor, Chip, 1/16W, 1% 0603 Std Std

1 R4 1.50k Resistor, Chip, 1/16W, 1% 0603 Std Std

4 R5, R6, R112, R114 10.0k Resistor, Chip, 1/16W, 1% 0603 Std Std

1 S101 G12AP Switch, ON-ON Mini Toggle 0.28 x 0.18 inch G12AP NKK

0 TP1, TP2, TP5, TP7, Open Test Point, O.032 Hole STD STD

TP8, TP9, TP10

1 U1 BQ25070DQC IC, 1A, Single-Input, Single Cell LiFePO4 Linear TDFN-10 BQ25070DQC TI

Battery Charger with 50mA LDO

1 U101 MC74HC74ADTR2G IC, Dual D Flip Flop with Set and Reset TSSOP MC74HC74ADTR2G On Semi

1 U102 TPS76133DBV IC, Low-Power 100 mA LDO Regulator SOT23-5 TPS76133DBV TI

3 U103, U106, U107 SN74LV175APW IC, Quad D-Flip Flop with Clear TSSOP SN74LV175APW TI

1 U104 SN74LVC2G132DCTR IC, Dual 2-Input NAND Gate With Schmitt-Trigger SSOP-8 SN74LVC2G132DCTR TI

Inputs

1 U105 SN74HC10QPWREP IC, Triple 3-Input Positive NAND Gate TSSOP SN74HC10QPWREP TI

4 — Shunt, 100-mil, Black 0.1 929950-00 3M

1 — PCB, 2.4 In x 2.3 In x 0.031 In HPA740 Any

SLVU473– May 2011 1A, Single Cell LiFePO

Linear Battery Charger with 4.9 V, 50 mA LDO

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