Texas Instruments bq24072RGTR Скачать руководство пользователя страница 7

Страница: 7 / 18

Vin

Vout

Vbat

CE (Charge Enable) pin toggled

Vbat_0.1

t - Time - 1 ms/div

www.ti.com

Schematic

Figure 4. Charge Enabled, Pulled High, Then Low – Disables Charge

Schematic

The bq24072/3/4/5/9(T) and bq24230/2 EVM schematic appears on the last page of this document.

SLVU274C – November 2008 – Revised May 2010

bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion —and Li-Polymer

Charge Management IC EVM

Содержание bq24072RGTR

Страница 1: ...an be interfaced with the system and host via the connectors and headers Contents 1 Introduction 2 2 Considerations When Testing and Using bq24072 3 4 5 9 T and bq24230 2 ICs 2 3 Performance Specifica...

Страница 2: ...and using the bq2403x ICs The bq24072 3 4 5 9 T series targets current above a nominal 500 mA 350 mA and the difference are listed in Table 1 Table 1 Ordering Information Optional Part Number VOVP VB...

Страница 3: ...ge Vin 4 75 V to 5 5 V Too low of input voltage less than the OUT voltage plus the dropout voltage results in degraded performance Excessive input voltage 5 5 V results in excess power dissipation and...

Страница 4: ...s in fast charge mode If the IC is in fast charge skip step 7 5 Verify DMM 3 IBAT is 9 mV or 0 09 A 6 Verify that VOUT for bq24072 is 200 mV above the battery voltage or a minimum of 3 4 Vdc For bq240...

Страница 5: ...the BAT FET turns off and allows no charging or discharging of the battery 18 Adjust the R16 TS Pot up or down until the TS threshold is reached Verify that the charging current is disabled Return the...

Страница 6: ...1 W Fast Charge CC t Time 1 ms div Voltage Reg Termination Test Summary www ti com Figure 2 Modes of Operation Tested in Steps 11 Through 13 Figure 3 Charger Profile With EN1 VSS and EN2 HI Programme...

Страница 7: ...igh Then Low Disables Charge 5 Schematic The bq24072 3 4 5 9 T and bq24230 2 EVM schematic appears on the last page of this document 7 SLVU274C November 2008 Revised May 2010 bq24072 3 4 5 9 T and bq2...

Страница 8: ...5 shows the top assembly view of the EVM Figure 6 shows the top etch layer of the EVM and Figure 7 shows the bottom etch layer Figure 5 Top Assembly View 8 bq24072 3 4 5 9 T and bq24230 2 1 5 A Single...

Страница 9: ...Figure 6 Board Layout Top Etch Layer 9 SLVU274C November 2008 Revised May 2010 bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM Copyright 2008 2010 Tex...

Страница 10: ...igure 7 Board Layout Bottom Etch Layer 10 bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer SLVU274C November 2008 Revised May 2010 Charge Management IC EVM Copyright 2008 2010 T...

Страница 11: ...r Chip 1 16W 1 0603 Std Std 2 2 2 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 1 0 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R23 1...

Страница 12: ...td 1 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 1 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 0...

Страница 13: ...Std Std 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 1 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 1 R2...

Страница 14: ...sistor Chip 1 16 W 1 0603 Std Std 0 1 R7 100k Resistor Chip 1 16 W 1 0603 Std Std 1 0 R7 0 Resistor Chip 1 16 W 1 0603 Std Std 1 1 R19 0 Resistor Chip 1 16 W 1 0603 Std Std 1 1 R8 5k Potentiometer 1 4...

Страница 15: ......

Страница 16: ...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...

Страница 17: ...h statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury...

Страница 18: ...401 Building No 5 JiuGe Business Center Lane 2301 Yishan Rd Minhang District Shanghai China Sales Direct 86 21 6401 6692 Email amall ameya360 com QQ 800077892 Skype ameyasales1 ameyasales2 Customer Se...