MC13892JVLR2 Datasheet, PDF (1/2 Pages) Freescale Semiconductor, Inc – Power Management Integrated Circuit (PMIC) for the i.MX35/51

Analog, Mixed Signal and Power Management
MC13892
Power Management Integrated Circuit (PMIC) for the i.MX35/51
Applications
• Freescale i.MX Processors
• Smartbook Tablets
• eBooks
• Smartphones
• Portable Navigation Devices
• Media Phones
• Ultrasound Medical Equipment
• Other Embedded Hand-held Devices
Overview
The MC13892 is a highly integrated power
management integrated circuit designed
specifically for the i.MX35 and i.MX51
application processor families. It also
supports the i.MX27 and i.MX37 processor
families.
These functions include a battery charging
system for USB and wall charging, a 10 Bit
ADC with a coulomb counter module for
monitoring battery charge, four adjustable
buck regulators for powering the processor
core and memory, 12 adjustable LDOs with
internal/external pass devices and a boost
regulator for RGB LED drivers.
MC13892 also incorporates power control
logic with processor interfacing and event
detection. A real time clock (RTC) function
is provided, including time and day
counters, as well as an alarm function. This
utilizes a 32 kHz clock, either the RC
oscillator or the 32.768 kHz crystal
oscillator as a time base, and is powered
by the coin cell backup supply.
Support is also provided for an external
secure real time clock (SRTC) which may
be integrated on a companion system
processor IC. MC13892 provides all the
circuitry for a resistive touch screen
interface and supports both SPI and I²C
interface. All of these functions have been
incorporated into a highly integrated mixed
signal IC, bidirectional power
management, I/O, and communications
device.
MC13892 Simplified Application Diagram
4 BUCK
REGULATORS
Processor Core
Split Power Domains
Memory
I/O
12 LDO
REGULATORS
Peripherals
5V BOOST
REGULATOR
USB On The Go
Supply
LED & BACKLIGHT
DRIVERS
Red Green Blue
Serial LEDs
Main Display
10 BIT ADC CORE
General Purpose
Resistive Touch
Screen Interface
32.768 kHz
CRYSTAL
OSCILLATOR
Real Time Clock
SRTC Support
BIAS &
REFERENCES
Trimmed Bandgap
MC13892
BATTERY MANAGEMENT
Single Cell Li-Ion Charging
Wall / USB Charger Input
OV/UV & Short-circuit Protection
Coin Cell Charger
Coulomb Counter
LED Charging/Fault Indicator
GENERAL
PURPOSE
I/O &
PWM OUTPUTS
POWER
CONTROL LOGIC
State Machine
CONTROL
INTERFACE
SPI / I²C
Performance
Operating Battery Voltage
Operating Charger Voltage
Output Voltage Of Buck Regulators
Accuracy of the LDOs
Maximum Charging Current
VBUS Supply Current in OTG Mode
ADC Resolution
Licell Backup Voltage
Internal Clock Source Frequency
Coulomb Counter Precision
Backlight LED Driver Frequency
RGB LED Driver Frequency
Typical Values
Up to 4.8 V
Up to 5.6 V
0.6 to 1.375 V @ 1.05 A (SW1) and 0.6 to 1.85 V @ 0.8 A (SW2-4)
+/-3 %
1.6 A
100 mA
10 bits
3.6 V
32.768 kHz
381.47 μC
256 Hz, 42 mA
256 Hz, 21 mA