MC13892VK Freescale Semiconductor, MC13892VK Datasheet - Page 90

• Manufacturer Part Number: MC13892VK
• Description: IC PMU I.MX51/37/35/27 139MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC13892VK

• Applications: Battery Management, Display (LED Drivers), Handheld/Mobile Devices, Power Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: *
• Output Current: 65 mA
• Output Voltage: 1.5 V
• 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
BATTERY INTERFACE AND CONTROL
BUILDING BLOCKS AND FUNCTIONS
in the previous paragraph. These building blocks and functions are described below while the charger operation is described in
the next section.
CHARGE PATH REGULATOR
and programmable current limit.
resistor is of no influence on the output voltage. The output voltage is programmable by SPI through VCHRG[2:0] bits.
and an amplifier. The control loop will regulate the voltage drop over the external resistor. The value of the external resistor
therefore is of influence on the charge current. The charge current is programmable by SPI through ICHRG[3:0] bits. Each setting
corresponds to a common use case. Software controlled pulsed charging can be obtained by programming the current
periodically to zero.
90
13892
The battery management interface consists of several building blocks and functions as depicted in the block diagram shown
The M1 and M2 are permanently used as a combined pass device for a super regulator, with a programmable output voltage
The voltage loop consists of M1, M2, and an amplifier with voltage feedback taken from the BPSNS pin. The value of the sense
The current loop is composed of the M1 and M2 as control elements, the external sense resistor, a programmable current limit,
Table 63. Charge Path Regulator Current Limit Settings
ICHRG[3:0] Charge Regulator
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Table 62. Charge Path Regulator Voltage Settings
000
001
010
011 (default)
100
101
110
111
VCHRG[2:0]
Current Limit (mA)
Fully On – M3
Open
1040
1200
1600
240
320
400
480
560
640
720
800
880
960
80
0
Charge Regulator Output Voltage (V)
Off
Standalone Charging Default for
precharging, USB charging, and LPB
Advised setting for USB charging with
PHY active
Standalone Charging Default
High Current Charger
High Current Charger
Externally Powered
Specific Use Case
3.800
4.100
4.150
4.200
4.250
4.300
4.375
4.450
Analog Integrated Circuit Device Data
Freescale Semiconductor