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參數(shù)資料
| 型號： | PCF50603HN |
| 廠商： | ST-ERICSSON |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC48 |
| 封裝： | 6 X 6 MM, 0.85 MM HEIGHT, SOT-778-1, PLASTIC, HVQFN-48 |
| 文件頁數(shù)： | 2/28頁 |
| 文件大?。?/td> | 147K |
| 代理商： | PCF50603HN |
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2003 Oct 31
10
Philips Semiconductors
Preliminary specication
Controller for power supply
and battery management
PCF50603
8
FUNCTIONAL DESCRIPTION
8.1
On/off control
8.1.1
OPERATING STATES
The PCF50603 has four operating states (see Fig.3):
NOPOWER
SAVE
STANDBY
ACTIVE.
handbook, full pagewidth
MDB681
NOPOWER
VBAT < VVERY_LOW_BAT
AND
VSAVE < VVERY_LOW_BACK
AND
VCHG < VVERY_LOW_BAT
SAVE
VBAT < VVERY_LOW_BAT
AND
VSAVE > VVERY_LOW_BACK
OR
VCHG > VVERY_LOW_BAT
STANDBY
VBAT > VVERY_LOW_BAT
ACTIVE
VBAT > VLOW_BAT
Fig.3 State diagram.
8.1.2
RESET GENERATION
The OOC generates an internal and an external reset each
time the system goes from STANDBY to ACTIVE state. All
registers for the regulators and converters are reset to their
default values.
The RSTHC_N is kept LOW for minimum 10 ms after
entering the ACTIVE state. If the IOREG supply is
switched off, RSTHC_N becomes LOW again (see Fig.4).
A special condition occurs when the main battery voltage
drops below the VVERY_LOW_BAT limit of typically 2.7 V; the
RSTHC_N is asserted in order to shut down the host
controller immediately (see Fig.5).
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