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PDF PCF50633 Data sheet ( Hoja de datos )
| Número de pieza | PCF50633 | |
| Descripción | Power supply and battery management controller | |
| Fabricantes | NXP Semiconductors | |
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PCF50633
Power supply and battery management controller
Rev. 06 — 05 March 2008
User manual
Document information
Info Content
Keywords
PCF50633, PMU, I2C-bus, USB charger, DC-to-DC converter
Abstract
This document introduces and describes the features and operation of the
PCF50633 power supply and battery management controller
1 page  
NXP Semiconductors
PCF50633
PCF50633 User Manual
4. Quick reference data
Table 1. Quick reference data
VSS = REFGND = GND = 0 V; Tamb = −40 to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ
VSYS
VBAT
VBUBAT
VADAPTSNS
VUSB
VVISA
VVISC
VREFC
VO(LED)
fSW(PWM)
system supply voltage
battery supply voltage
backup battery supply voltage
voltage on pin ADAPTSNS
USB supply voltage
voltage on pin VISA[1]
voltage on pin VISC[1]
voltage on pin REFC[1]
LED output voltage
PWM switching frequency
Active mode
Active mode
voltage on pin ADAPTSNS
for DOWN1, DOWN2 and AUTO
converters
2.8 -
2.8 -
1.6 -
4-
4-
- 2.4
- 2.4
- 0.9
5-
- 1.7
fSW(PFM)
Tth(die)
Vth(batok)
Vth(sysok)
Vth(sysmin)
Vth(syspres)
Vth(bubpres)
PFM switching frequency
for LED boost converter
-
die threshold temperature
-
battery OK threshold voltage[2]
range; programmable in 100 mV steps 2.8
system OK threshold voltage[3]
range; programmable in 100 mV steps 2.8
minimum system ON threshold voltage[4]
-
system threshold voltage for save state[5] no backup battery
1.7
backup battery threshold voltage for save
state[6]
1
-
125
-
-
2.5
2
1.3
Vth(adaptpres)
Vth(usbpres)
IDD(tot)
adapter presence threshold voltage
USB adapter presence threshold voltage
total supply current
in Save state; VBAT = 2.5 V; no USB or
adapter present
3.25 3.6
3.25 3.6
--
in Standby state; all supplies disabled; -
VBAT = 3.6 V; no USB or adapter
present
-
in Active state; all supplies enabled - -
(no load); VBAT = 3.6 V; no USB or
adapter present
Max Unit
5.3 V
5V
3V
5.3 V
5.3 V
-V
-V
-V
18 V
- MHz
1 MHz
- °C
3.4 V
3.4 V
-V
2.3 V
1.6 V
3.95 V
3.95 V
50 μA
60 μA
1 mA
[1] Note that VVISA, VVISC and VREFC are internal signals. Pins VISA, VISC and REFC are provided to allow external decoupling capacitors
to be connected. Decoupling is necessary to ensure stable operation.
[2] If a USB supply is connected and USBBATCHK = 1, a transition from Save to Standby will only occur if VBAT > Vth(batok) and VSYS >
Vth(sysok). A transition from Standby to Save will occur if VBAT < Vth(batok) or VSYS < Vth(sysok).
[3] If the system voltage drops below Vth(sysok), a lowsys interrupt is generated and the time-out timer is started. The SYSOK status bit is
reset (see Table 14 and Table 20).
[4] If the system voltage drops below Vth(sysmin), an emergency shutdown is initiated and the system transitions to the Save state.
[5] If the system voltage drops below Vth(syspres), and no backup battery is present (bubpres = 0; see Table 14), the system will be reset and
enter the NoPower state. If a backup battery is connected (VBUBAT > Vth(BUBPRES), the PCF50633 will continue in Save mode, powered
by the backup battery.
[6] If the system voltage is below Vth(syspres), the system will continue to operate in the Save state as long as bubpres = 1 (VBUBAT >
Vth(bubpres); see Table 14). If bubpres changes to 0, the system will be reset and enter the NoPower state.
PCF50633UM_6
User manual
Rev. 06 — 05 March 2008
© NXP B.V. 2008. All rights reserved.
5 of 125
5 Page 
NXP Semiconductors
PCF50633
PCF50633 User Manual
[2] For the AUTO converter, in the 1.1 A configuration, the following pin pairs must be connected on the PCB:
AUTOLXA1 to AUTOLXA2
AUTOLXB1 to AUTOLXB2
The AUTOLXA2 and AUTOLXB1 pins must remain unconnected in the 500 mA configuration (see
Section 8.9.6.3). These pins are all power pins. They must be connected via a low-ohmic connection.
8. Functional description
8.1 On/Off Control (OOC)
8.1.1 Introduction
The OOC controls the activity states of the PCF50633. It also provides sequencing for the
host controller clock (CLK32K) and reset (RSTHC) signals. Four programmable start-up
phases facilitate the sequential start-up of the supplies.
8.1.2 Features
• Finite state machine supporting Save, Standby and Active states
• Programmable wake-up condition for ONKEY and EXTONx inputs
• Wake-up condition for RTC alarm
• Programmable sequencing for host controller clock (CLK32K) and reset (RSTHC)
• Four separate activity phases for power supply sequencing
• Programmable debounce for ONKEY, EXTONx and SHUTDOWN inputs.
8.1.3 Block diagram
EXTONx
ONKEY
SHUTDOWN
KEEPACT
OOC
sysok
batok
tmpok
RTC alarm
I2C
ON/OFF
State
Machine
Software
Control
Interrupts
Operating
States
Activation
Phases
CLK32K
RSTHC
PCF50633UM_6
User manual
Fig 3. OOC block diagram
Rev. 06 — 05 March 2008
© NXP B.V. 2008. All rights reserved.
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