MC13892JVL Freescale Semiconductor, MC13892JVL Datasheet - Page 102

• Manufacturer Part Number: MC13892JVL
• Description: IC PMU I.MX51/37/35/27 186MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC13892JVL

• 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
• Output Current: 65 mA
• Output Voltage: 1.5 V
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Mounting: Surface Mount
• Package Type: BGA
• Case Length: 12mm
• Screening Level: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FUNCTIONAL DEVICE OPERATION
ADC SUBSYSTEM
that excessively high values can impact the operating life of the device due to extra voltage drop across the sense resistor.
CHANNEL 2 APPLICATION SUPPLY
the input range of the ADC.
CHANNEL 3 CHARGER VOLTAGE
range of the ADC. If the CHRGRAWDIV bit is set to a 1 (default), then the scaling factor is a divide by 5, when set to a 0 a divide
by 10.
CHANNEL 4 CHARGER CURRENT
between CHRGISNS and BPSNS. The voltage difference is first amplified to fit the ADC input range as V(CHRGISNS-BPSNS)*4.
The conversion is read out in a 2's complement format, see
charger to battery, the negative reading to the current flowing into the charger terminal. Unlike the battery current and voltage
readings, the charger current readings are not interleaved with the charger voltage readings, so when RAND = 1 a total of 8
readings are executed. The conversion circuit is enabled by setting the CHRGICON bit to a one. If the CHRGICON bit is not set,
the ADC will return a 0 reading for channel 4.
but also the charge current levels. It is therefore advised not to select another value than 100 mOhm.
102
13892
Table 86. Battery Current Reading Specification
The value of the sense resistor used, determines the accuracy of the result as well as the available conversion range. Note
Amplifier Gain
Amplifier Offset
Sense Resistor
The application supply voltage is read at the BP pin at channel 2. The battery voltage is first scaled as V(BP)/2 in order to fit
The charger voltage is measured at the CHRGRAW pin at channel 3. The charger voltage is first scaled in order to fit the input
The charge current is read by monitoring the voltage drop over the charge current sense resistor. This resistor is connected
The value of the sense resistor used determines not only the accuracy of the result as well as the available conversion range,
Table 89. Charge Current Reading Coding
0 111 111 111
0 000 000 001
0 000 000 000
1 111 111 111
1 000 000 000
Conversion Code
Table 88. Charger Voltage Reading Coding
ADDn[9:0]
Conversion Code
1 101 010 100
0 000 000 000
ADDn[9:0]
Parameter
Voltage at input
ADC in mV
Table 87. Application Supply Voltage Reading Coding
Conversion Code
-2.346
-1200
1200
1 111 111 111
1 000 010 101
0 000 000 000
2.4
0
Voltage at input
ADDn[9:0]
ADC in V
2.000
0.000
CHRGISNS – BPSNS in mV
Condition
Voltage at input
ADC in V
-0.586
-300.0
Table
300.0
0.586
Voltage at CHGRAW in V,
2.400
1.250
0.000
0
CHRGRAWDIV = 0
89. The positive reading corresponds to the current flow from
20.000
0.000
Min
-2.0
19
-
Voltage at BP
100 mOhm in mA
Current through
4.800
2.500
0.000
in V
5.865
5.865
3000
3000
0
Analog Integrated Circuit Device Data
Typ
20
20
-
Voltage at CHGRAW in V,
CHRGRAWDIV = 1
10.000
0.000
Freescale Semiconductor
To charger connection
To charger connection
To application/battery
To application/battery
Max
2.0
21
Current Flow
-
-
mOhm
Units
mV