CSR8615A04-IQQF-R View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'CSR8615A04-IQQF-R' PDF : 114 Pages View PDF
Figure 11.1 shows the mode-to-mode transition voltages. These voltages are fixed and calibrated by CSR, see
Section 11.2. The transition between modes can occur at any time.
Fast Charge Mode
Constant Current
Ifast
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correct for process variation in the charger circuit.
The current is held constant at Ifast until the voltage at VBAT_SENSE reaches Vfloat, then the charger reduces the
current sourced to maintain a constant voltage on the VBAT_SENSE pin.
When the current sourced is below the termination current, Iterm, the charging stops and the charger enters standby
mode. Iterm is typically 10% of the fast charge current.
11.1.4 Standby Mode
When the battery is fully charged, the charger enters standby mode, and battery charging stops. The battery voltage
on the VBAT_SENSE pin is monitored, and when it drops below a threshold set at Vhyst below the final charging
voltage, Vfloat, the charger re-enters fast charge mode.
Pre-production Information
© Cambridge Silicon Radio Limited 2013
Confidential Information - This Material is Subject to CSR's Non-disclosure Agreement
Page 71 of 114
CS-303726-DSP3
www.csr.com
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