SC900841JVKR2 Freescale Semiconductor, SC900841JVKR2 Datasheet - Page 110

• Manufacturer Part Number: SC900841JVKR2
• Description: IC POWER MGT 338-MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of SC900841JVKR2

• Applications: PC's, PDA's
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 338-TBGA
• Input Voltage: 2.8 V to 4.4 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

POWER SUPPLIES FAULT MANAGEMENT
caused by power supplies (directly or indirectly) operating
outside their specified boundaries.
various interrupt signals, and the interrupt mechanism used
to communicate to the system controller.
THERMAL MANAGEMENT
output that is proportional to the absolute temperature. This
voltage can be read out via the ADC for precise temperature
readouts. See
Interrupt THRM will be generated, if not masked, when
crossing the thermal warning threshold TWARN, and sets the
VRFAULT 1st level interrupt that causes the PMICINT pin to
assert, notifying the system controller of a system event.
thermal protection that shuts down and powers off the
system, in cases of over dissipation, if the junction
temperature exceeds the TSHUTDOWN threshold. This
thermal protection will act above the maximum junction
temperature, to avoid any unwanted power downs. The
protection is de-bounced by one period of the 32 kHz clock in
order to suppress any (thermal) noise. This protection should
be considered as a fail-safe mechanism. Therefore, the
110
Table 67. BATOCP Control Register Structure and Bits Description
900841
FUNCTIONAL DEVICE OPERATION
POWER SUPPLIES
BATOCPSET
The following section discusses faults related to, or
Reference
The thermal protection is based on a circuit with a voltage
This voltage is monitored by an integrated comparator.
In addition to the previous, the 900841 includes integrated
Reserved
Name
TOCP
Interrupt Controller
ADC
Bits
1:0
4:2
7:5
Subsystem.
Battery Discharge Current Limit
x0 = 2.0 A
x1 = 3.0 A
x2 = 4.0 A
x3 = 5.0 A
Reserved
Battery Discharge Current Limit Filter Timer
x0 = 1.0 ms
x1 = 5.0 ms
x2 = 10 ms
x3 = 15 ms
x4 = 20 ms
x5 = 40 ms
x6 = 80 ms
x7 = 160 ms
for more information on the
CHRGPROT2 (ADDR 0xD8 - R/W - Default Value: 0x60)
Table 66. Thermal Warning/Shutdown Thresholds
application design should execute a thermal shutdown under
normal conditions.
back to its normal range, the SC900841 restarts
automatically, by following the steps outlined in
Up Sequence
BATOCP
the battery is monitored. BATOCSET sets the maximum
battery discharge current value. If the battery discharge
current is greater than the value set by BATOCSET for more
than a time set by BATOCPT, the BATOCP interrupt is set to
interrupt the system. If the over-discharge current condition
continues for another BATOCPT period, the 900841 initiates
a system shutdown similar to the thermal shutdown event.
battery is not being discharged.
Thermal Warning Threshold
Thermal Warning Hysteresis
Thermal Shutdown Threshold
Description
Once the thermal event is cleared and the temperature is
When the battery is being discharged, the current out of
The BATOCP comparator can be shutdown when the
Parameter
Analog Integrated Circuit Device Data
Min
115
130
2
Freescale Semiconductor
Typ
120
140
-
Initial Power
Max
125
150
4
Unit
°C
°C
°C