Texas Instruments bq25040 User Manual Download Page 6

Page: 6 / 12

Schematics

Schematics

www.ti.com

Figure 5. Basic EVM Charger Circuit

Figure 6. Circuit for Programming Pulse (Typically Done by Host)

1.1-A, Single-Input, Single-Cell, Li-Ion Battery Charger With 50-mA LDO and 2.3-A Production Test Support

SLUU358 – April 2009

Summary of Contents for bq25040

Page 1: ...on 2 2 Considerations When Testing the bq25040 IC 2 3 Performance Specification Summary 2 4 Test Summary 3 4 1 Equipment 3 4 2 Equipment and EVM Setup 3 4 3 Test Procedure 3 5 Schematics 6 6 Layout 7...

Page 2: ...on the LDO output does not exceed USB specifications The USB500 mode is set for a 400 mA current limit so that the LDO load does not cause the USB500 limit to be exceeded The LEDs can be run from any...

Page 3: ...re 1 if desired Figure 1 Evaluation Setup Charging Circuit Shown Pulse Programming Circuit not Shown 1 Make sure setup procedure was followed 2 Turn on P S 1 preset to 5 1 Vdc 3 Verify that the PG D1...

Page 4: ...shunt if this happens 9 Switch S1 DOWN then UP to program charger to USB100 mode Figure 3 10 This procedure can be repeated steps 7 to 9 for the shunt on any jumper JMP1 through JMP5 to program one to...

Page 5: ...Timing of Program Change From 0 4 A to 0 1 A Figure 4 Power Up Sequence Shows Timing Between Vin Viset Vpg and Vchg C1 Chg JMP1 C4 PG JMP8 LEDs Pulled Up to 4 15 V Battery SLUU358 April 2009 1 1 A Sin...

Page 6: ...Basic EVM Charger Circuit Figure 6 Circuit for Programming Pulse Typically Done by Host 1 1 A Single Input Single Cell Li Ion Battery Charger With 50 mA LDO and 2 3 A Production Test Support 6 SLUU35...

Page 7: ...com Layout Figure 7 Assembly Layer Figure 8 Top Copper Layer SLUU358 April 2009 1 1 A Single Input Single Cell Li Ion Battery Charger With 50 mA LDO and 2 3 A Production Test Support 7 Submit Documen...

Page 8: ...Block 2 pin 6 A 3 5mm 0 27 0 25 inch ED555 2DS OST 8 JMP1JMP8 PTC36SAAN Header Male 2 pin 100mil spacing 0 100 inch 2 PTC36SAAN Sullins 36 pin strip 1 Q1 MMBT3904LT1G Bipolar NPN 40 V 200 mA 225 mW SO...

Page 9: ...5 TPS76133DBV TI 1 U3 SN74LV175APW IC Quad D Flip Flop with Clear TSSOP SN74LV175APW TI 1 U4 MC74HC74ADTR2G IC Dual D Flip Flop with Set and Reset TSSOP MC74HC74ADTR2G On Semi 1 U5 SN74LVC2G132DCT IC...

Page 10: ...duct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application enginee...

Page 11: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

Page 12: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments BQ25040EVM...