Texas Instruments BQ24392EVM, Руководство пользователя, Страница: 9 / 22

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BQ24392 Implementation Guidelines
Table 3 shows the states the BQ24392 EVM has the output LEDs in after inserting any chargers from the
high-current charger list.
Table 3. LED State After Inserting Charger
Output LED Status
CH_AL_N ON
CHG_DET ON
SW_OPEN OFF
Figure 9 is an image of the EVM after a high-current charger attachment.
Figure 9. EVM After High-Current Charger Attached
3.6.2 Low-Current Chargers
Low-Current chargers include the following:
• SDP
• Nonstandard chargers with VBUS = 5 V and D+ D– floating
Table 4 shows the output status for different low current charger attachments, notice that the
GOOD_BAT input affects the SW_OPEN output for an SDP but not a nonstandard charger.
Table 4. Output Status for Different Low-Current Charger Attachments
Attachment GOOD_BAT LED Status
SDP LOW CHG_AL_N = ON
CHG_DET = OFF
SW_OPEN = OFF
SDP High CHG_AL_N = ON
CHG_DET = OFF
SW_OPEN = ON
Nonstandard X CHG_AL_N = ON
CHG_DET = OFF
SW_OPEN = OFF
9 SLVUA61 – April 2014 BQ24392EVM User's Guide
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