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3.10.3.3. Charging control
A programmable charging block in PM6650-2 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. PM6650-2 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.
U8210 Charging Control block
4.2V~3.83V
100~63 (%)
3.82V~3.76V
62~41 (%)
3.75V~3.67V
40~21 (%)
3.66V~3.50V
20~3 (%)
3.49V~3.28V
2~0 (%)
U900 Battery Bar Display(Stand By Condition)
Z3X-BOX.COM
Содержание U300
Страница 1: ...Date June 2006 Issue 1 0 Service Manual U300 U300C Service Manual Model U300 U300C Z 3 X B O X C O M ...
Страница 3: ... 4 Z 3 X B O X C O M ...
Страница 24: ...3 TECHNICAL BRIEF 25 Figure 3 3 1 1 RFR6250 IC functional block diagram Z 3 X B O X C O M ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Страница 76: ...4 TROUBLE SHOOTING 77 4 5 Checking WCDMA Block Z 3 X B O X C O M ...
Страница 77: ...4 TROUBLE SHOOTING 78 4 3 5 1 2 Z 3 X B O X C O M ...
Страница 82: ...4 TROUBLE SHOOTING 83 4 5 5 Check RF Rx Level Test Point RF Rx Level Z 3 X B O X C O M ...
Страница 85: ...4 6 Checking GSM Block 4 TROUBLE SHOOTING 86 Z 3 X B O X C O M ...
Страница 87: ...4 TROUBLE SHOOTING 88 Z 3 X B O X C O M ...
Страница 89: ...4 TROUBLE SHOOTING 90 Z 3 X B O X C O M ...
Страница 92: ...4 TROUBLE SHOOTING 93 Z 3 X B O X C O M ...
Страница 95: ...4 TROUBLE SHOOTING 96 Z 3 X B O X C O M ...
Страница 103: ...4 TROUBLE SHOOTING 104 LCD Control data flow CN600 50pin LCD connector 40pin LCD connector LCD Module Z 3 X B O X C O M ...
Страница 110: ...4 TROUBLE SHOOTING 111 C515 C516 CN501 Z 3 X B O X C O M ...
Страница 116: ...4 TROUBLE SHOOTING 117 C201 C202 for MIC capacitor Z 3 X B O X C O M ...
Страница 119: ...4 TROUBLE SHOOTING 120 Q400 Q401 Q402 VBATT GND Z 3 X B O X C O M ...
Страница 140: ...6 BLOCK DIAGRAM 141 Z 3 X B O X C O M ...
Страница 141: ...6 2 Interface Diagram U300 Interface Diagram 6 BLOCK DIAGRAM 142 Z 3 X B O X C O M ...
Страница 149: ... 150 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 150: ... 151 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 151: ... 152 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 152: ... 153 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 153: ... 154 Z 3 X B O X C O M ...
Страница 155: ...9 Calibration 156 9 2 How to use HOT KIMCHI 9 2 1 Calibration Find model name Apply U300 model Z 3 X B O X C O M ...
Страница 156: ...9 Calibration 157 Check testing object Click Start for Calibration Z 3 X B O X C O M ...
Страница 157: ...9 Calibration 158 Show result of calibration Show result Z 3 X B O X C O M ...
Страница 159: ... 160 Z 3 X B O X C O M ...
Страница 183: ...Note Z 3 X B O X C O M ...
Страница 184: ...Note Z 3 X B O X C O M ...