MC13892BJVL Freescale Semiconductor, MC13892BJVL Datasheet - Page 3

• Manufacturer Part Number: MC13892BJVL
• Description: IC PMU I.MX51/37/35/27 186MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC13892BJVL

• Applications: Battery Management, Display (LED Drivers), Handheld/Mobile Devices, Power Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 186-LFBGA
• Mounting Style: SMD/SMT
• Duty Cycle (max): 55 %
• Input Voltage: - 0.3 V to + 20 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Output Current: 30 mA
• Output Voltage: 3.3 V
• Topology: Boost
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Freescale Semiconductor
Medium Severity
8372
8375
8382
8719
Erratum
Power
Charger
USB
Charger
Module
REGSPEN behavior
does not match the
spec.
BP to CHRGRAW
leakage.
UVBUS turn on event
works only if the ramp
is fast enough.
Operation from wall
charger with no battery
via the charge path or
if the battery is deeply
discharged.
Description
MC13892JVL
MC13892VL
MC13892JVK
MC13892VK
(ONLY)
MC13892JVL
MC13892VL
MC13892JVK
MC13892VK
(ONLY)
MC13892JVL
MC13892VL
MC13892JVK
MC13892VK
(ONLY)
Applies to ALL part
numbers
Part Numbers
Applies to
The LDO SCPI does not work as per spec. The
interrupt SCPI is generated when a short-circuit is
detected, even if the REGSPEN bit is not set (the spec
says that in this case the interrupt should not fire).
The BP powered OFF state and the Standby leakage
currents on the BPSNS and CHRGISNS pins are
around 35 μA. If UVBUS is connected to CHRGRAW,
there will be an additional
35 μA of leakage current.
The USB attach turn on event only works if the ramp of
UVBUS (from 0 to 4.4 V) is fast enough (<50 ms).
When using the battery charger as the only source of
power, as in a battery -less application or if the battery
is deeply discharged, the following precautions should
be observed:
1. It is still necessary to connect ADIN5 to either
2. Very careful budgeting of the total current
3 If operating from a USB host the unit load limit (100
4. If operating from a “wall charger”, and if there is no
VCOREDIG or a midpoint of a divider from GPIO1 to
ground since the battery charger will still interpret
this voltage as the battery pack thermistor by default.
consumption and voltage standoff from CHRGRAW
to BPSNS must be made, since the power limiter is
operational by default, and a battery less or if the
battery is deeply discharged system won't have a
source of current if the power dissipation limit is
reached.
mA max.) must still be observed.
battery or if the battery is deeply discharged, there is
an period of approximately 85 ms after RESETB is
released, that the current limit is set to 80mA before
setting the current limit is set to a nominal 560 mA. If
the total current demand is greater than this limit, or
if the battery is deeply discharged, the voltage may
collapse and RESETB may pulse a few times
(depending in part in the system load and
dependence on RESETB.) Therefore, at the end of
this time, RESETB may or may not be active. It may
be necessary to use one of the other turn on events
(such as PWRONx) to turn the 13892 back on.
MC13892ER
Impact
Recommendation is to have the
REGSCPEN set. Then there is no issue
and this protection feature
is advised. However, if it is desired to
disable REGSCP when SCPI fires:
- If backlight was enabled
- Read both LEDControl0 & 1 registers
- If both = 0x0, then SCPI stands for
backlight
- Else SCPI is for the regulator
- Else SCPI triggers due to the regulator
short-circuit protection.
Or
Migrate to revised device:
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
No workaround available.
Or
Migrate to revised device:
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
(3 options available):
- Speed up the UVBUS turn on time.
- Work with a common USB and charger
path to benefit the
CHRGRAW turn on event when a USB
is plugged in.
- Use any other turn on event to power
up.
Or
Migrate to revised device:
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
Add a 120mS RC delay on RESETB
and RESETBMCU. Add a 68K pull-up
resistor to the I/O rail at the
RESETBMCU output. Add a 100 Ohm
resistor from the RESETBMCU output
of the PMIC to the processors reset
input, on the processor side of the 100
Ohm resistor add a 2.2uF capacitor to
ground. Repeat above steps for
RESETB.
Or
Migrate to revised device (Fixed in
Silicon Revision 3.2 of the following):
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
Workaround
3