MC13892BJVL Freescale Semiconductor, MC13892BJVL Datasheet - Page 4

• 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

4
Low Severity
8732
8373
7640
8718
8849
Erratum
Switchers
Coin Cell
Lighting
System
General
Charger
Module
Buck current limit
interaction with DVS
Module: Switchers
Leakage current on
the LICELL.
LED currents are
higher then spec
PWRONx pin
grounded not able to
power on IC with other
PWRONx pin
Charger path reverse
current threshold is too
high
Description
Applies to ALL part
numbers
MC13892JVL
MC13892VL
MC13892JVK
MC13892VK
(ONLY)
MC13892JVL
MC13892VL
MC13892JVK
MC13892VK
(ONLY)
Applies to ALL part
numbers
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
(ONLY)
Part Numbers
Applies to
The buck current limit can be reached if an output
voltage increase is requested on a buck switcher while
it is at max load or very close of that. The
consequence is that the programmed output voltage is
not reached, during the DVS ramp up phase, the coil
current increases temporarily to permit an output rise,
and can reach current limit.
When the coin cell is present and the battery is
disconnected, a leakage current around 2.0 to 3.0 uA
with BP=high impedance and 2mA if BP is actively
pulled to ground can be observed from BP to GND,
and alsoa leakage voltage of 0.3 to 0.49 V. This
leakage current comes from the coin cell.
Signaling LED and backlight LED currents are higher
than target value by ~ 10%
If any of the PWRONx pins is grounded, neither of the
other 2 PWRON pins are able to generate a turn on
event.
Charger path reverse current threshold is too high.
Threshold is ~ 120 -180mA, where it should be 35mA.
This only impacts reverse supply mode from the
battery to an external accessory via the charge path.
MC13892ER
Impact
Freescale Semiconductor
Workaround: If ramping buck switcher
voltage from a low set point to a higher
set point when load is near max then
disable current limit by setting the
SWILIMB SPI bit = 1.
Add NMOS switch or load switch
between BP and VINAUDIO with source
connected to BP and the drain
connected to the VINAUDIO. Enable the
switch when application is ON and
disable when OFF.
Or
Migrate to revised device:
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
If LED's cannot
handle increase of 10% current,
program the current sinks to one level
below the required setting.
Or
Migrate to revised device:
MC13892AJVL
MC13892BJVL
MC13892AJVK
MC13892BJVK
Set the PWRONxDBNC bits (or at least
the ones for the offending PWRON pin)
to non-zero.
No workaround available.
Workaround