!" # User’s Guide July 2002 Advanced Analog Products SLUU113
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Trademarks Preface Read This First About This Manual This user’s guide describes the bq24001/2/3/7 evaluation module (EVM) for a linear Li-ion charge-management solution that uses the bq24001/2/3/7. This guide describes a complete designed-and-tested charger, which delivers up to 1.
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Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Performance Specification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Test Summary . . . . . . . . . .
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Chapter 1 Introduction This user’s guide describes the bq24001/2/3/7 EVM for a linear Li-ion chargemanagement solution for battery-pack applications that uses the bq24001/2/3/7. This guide describes a complete designed-and-tested charger, which delivers up to 1.0 A of continuous-charge current. Topic Page 1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Performance Specification Summary . . . . . . . . . . . . . . . . . . . . .
Background 1.1 Background The bq24001/2/3/7 series ICs are advanced Li-Ion linear charge management devices for highly integrated and space-limited applications. They combine high-accuracy current and voltage regulation; FET pass-transistor and reverse-blocking Schottky; battery conditioning, temperature, or input-power monitoring; charge termination; charge-status indication; and charge timer in a small, 20-lead RGW package.
Chapter 2 Test Summary This chapter shows the test setups used, and the tests performed, in designing the bq24001/2/3/7 EVM. Topic Page 2.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2 Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 2.1 Setup The bq24001/2/3/7 EVM board requires a dc power source (0–6VDC, ≥ 1.1 A or equivalent to provide input power and a single-cell lithium-ion or lithiumpolymer battery to charge. Adjust the power supply for 5.1 V ±0.1 VDC and set the current limit to 1.3 A ±0.2 A. Power down the supply. The test setup connections and jumper setting selections are listed below. 2.1.1 2.1.
Test Procedures The bq24001/2/3/7 enters preconditioning mode if the battery is below the LowV threshold. In this mode, the bq24001/2/3/7 trickle-charges with approximately 65 mA for approximately 23 minutes. If the battery does not reach the LowV threshold during this period, then the charge current is terminated and the bq24001/2/3/7 enters fault mode. The red LED flashes when in fault mode. This feature may be tested by removing input power, replacing the battery with a 30–40-Ω, 0.
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Chapter 3 Physical Layouts This chapter contains the board layout and assembly drawings for the SLUP167 board used for the bq24001/2/3/7 EVM. Topic 3.1 Page Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Board Layout 3.1 Board Layout Figure 3-1 shows the top layer of the SLUP167. Figure 3-2 shows the bottom layer. Figure 3-3 shows the SLUP167 top assembly view. Figure 3–1.
Board Layout Figure 3–2. SLUP167 Board Layout Bottom Layer Figure 3–3.
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Chapter 4 Bill of Materials This chapter contains the bill of materials required for the bq24001 EVM. It also specifies the charge status configurations for the bq24001 ICs. Topic 4.1 Page Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bill of Materials 4-2 4.1 Bill of Materials Table 4-1 lists materials required for the bq24001/2/3/7 EVM using the SLUP167 (PWB) board. Bill of Materials Table 4–1. bq24001/2/3/7 EVM (SLUP167) Bill of Materials 5 mm MLP Square Package Item # –001 (bq24001) –002 (bq24002) –003 (bq24003) –004 (bq24007) RefDes Description Size MFR Part Number 1 2 2 2 2 C1, C4 Capacitor, tantalum, 10 µF, 16 V 1210 Panasonic ECS–T1CX106R 2 1 1 1 1 C2 Capacitor, ceramic, 0.
Table 4–1. bq24001/2/3/7 EVM (SLUP167) Bill of Materials (Continued) 5 mm MLP Square Package Item # –001 (bq24001) –002 (bq24002) –003 (bq24003) –004 (bq24007) RefDes Description Size MFR Part Number 24 1 1 1 1 PWB PWB, bq24001/2/3/7RGW–(SLUP167) EVM TI TI SLUP167 Rev. A 25 4 5 4 4 Shunts Shunts for header – J2–J6, 4 to 5 shunts 0.1” Sullins Electronics Corp. SPC02SYAN Assembly Note: 1) Shunts to be applied to J2–APG, J3–ON, J4–4.2V, J5–4.
Bill of Materials 4-4 Bill of Materials
Appendix A Schematic This chapter contains the schematic diagram for the bq2401/2/3/7 EVM. Topic A.1 Page Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R8 511 Ω 1 R6 511 Ω 2 3 J1 DC+ DC– U1 bq2400xQFN R3 0.1 Ω 1 2 C1 10 µF C2 0.1 µF 1 2 3 4 5 6 7 8 9 10 N/C IN N/C IN N/C VCC OUT ISNS OUT APG VSNS EN AGND VSEL STAT2 GND STAT1 CR N/C TMR_SEL R9 D1 C4 10 µF 3 2 1 J7 BAT+ DC– SENSE+ 2 kΩ R10 10 MΩ C5 10 pF R5 18.7 kΩ J4 EN JUMPER VSEL JUMPER 2 1 J6 STAT2 JUMPER J2 APG/THM JUMPER C3 0.22 µF 2 1 1 2 3 R1 51.1 kΩ R 1 2 3 J3 R2 215 kΩ G 20 19 18 17 16 15 14 13 12 11 PWP 1 2 3 D2 R7 95.
