3. TECHNICAL BRIEF
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3.10.3.3. Charging control
A programmable charging block in PM6650-2M is used for battery charging. It is possible to set limits
for the charging current. The external supply typically connects directly to pin (VCHG). The voltage on
this pin (VCHG) is monitored by detection circuitry to ascertain whether a valid external supply is
applied or not. For additional accuracy or to capture variations over time, this voltage is routed
internally to the housekeeping ADC via the analog multiplexer. PM6650-2M circuits monitor voltages at
VCHARGER and ICHARGE pins to determine which supply should be used and when to switch
between the two supplies. These pins are connected to the Source (or emitter) and Drain (or collector)
contacts of the pass transistor respectively.
U310 Battery Bar Display
4.2V~3.80V
100~63 (%)
3.79V~3.72V
62~41 (%)
3.71V~3.64V
40~21 (%)
3.63V~3.46V
20~3 (%)
3.45V~3.25V
2~0 (%)
Содержание U310
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Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 33: ...3 TECHNICAL BRIEF 34 Figure 3 5 10 1 Bluetooth system architecture ...
Страница 47: ...3 TECHNICAL BRIEF 48 Figure PM6650 2M Functional Block Diagram ...
Страница 72: ...4 TROUBLE SHOOTING 73 4 2 SIGNAL PATH WCDMA Tx PATH WCDMA Rx PATH ...
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Страница 90: ...4 TROUBLE SHOOTING 91 ...
Страница 110: ...4 TROUBLE SHOOTING 111 CN501 C537 C538 MSM6250A ...
Страница 116: ...4 TROUBLE SHOOTING 117 C216 C217 for MIC serial capacitor MSM6250A ...
Страница 119: ...4 TROUBLE SHOOTING 120 Q400 Q401 Q402 VBATT GND ...
Страница 149: ... 150 8 pcb layout ...
Страница 150: ... 151 8 pcb layout ...
Страница 151: ... 152 8 pcb layout ...
Страница 152: ... 153 8 pcb layout ...
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Страница 160: ...9 Calibration RF Auto Test Program 161 9 3 1 Example for Calibration Click START U310 ...
Страница 161: ...9 Calibration RF Auto Test Program 162 9 3 2 Example for RF Auto Test Click Run button U310 U310 U310 U310 ...
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