参数资料
型号: MC13892VLR2
厂商: Freescale Semiconductor
文件页数: 87/158页
文件大小: 0K
描述: IC PMU I.MX51/37/35/27 186MAPBGA
标准包装: 1,000
应用: 电池管理,显示器(LED 驱动器),手持/移动设备,电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 186-LFBGA
供应商设备封装: 186-PBGA(12x12)
包装: 带卷 (TR)
FUNCTIONAL DEVICE OPERATION
SUPPLIES
Table 57. VSD Voltage Control
Parameter
VSD[2:0]
Value
000
001
010
011
100
101
110
111
Output Voltage
1.80 V
2.00 V
2.60 V
2.70 V
2.80 V
2.90 V
3.00 V
3.15 V
ILoad max
250 mA
250 mA
250 mA
250 mA
250 mA
250 mA
250 mA
250 mA
Input Supply
BP or External Switcher
BP
BP
BP
BP
BP
BP
BP
GEN1, GEN2, AND GEN3 REGULATORS
General purpose LDOs VGEN1, VGEN2, and VGEN3 are provided for expansion of the power tree to support peripheral
devices, which could include WLAN, BT, GPS, or other functional modules. All the regulators include programmable set points
for system flexibility. At the 1.2 V and 1.5 V set points, both VGEN1 and VGEN2 can be powered from an external buck regulator
(2.2 V typ) for an efficiency advantage, and reduced power dissipation in the pass devices. (Note that a connection to BP or the
external buck regulator as the input to the regulators is a hardwired board level commitment, and not changed on-the-fly).
Table 58. VGEN1 Control Register Bit Assignments
Parameter
VGEN1[1:0]
Value
00
01
10
11
output = 1.20 V
output = 1.50 V
output = 2.775 V
output = 3.15 V
Function
ILoad max (75)
200 mA
200 mA
200 mA
200 mA
Input Supply
BP or external
switcher
BP or external
switcher
BP
BP
Notes
75. The max load given for VGEN1MODE = 0 and must take into account the capabilities of the external pass device and operating
conditions, to manage its power dissipation. Load capability is 3.0 mA for VGEN1MODE = 1.
Table 59. VGEN2 Control Register Bit Assignments
Parameter
VGEN2[2:0]
Value
000
001
010
011
100
101
110
111
Function
output = 1.20 V
output = 1.50 V
output = 1.60 V
output = 1.80 V
output = 2.70 V
output = 2.80 V
output = 3.00 V
output = 3.15 V
ILoad max (76)
350 mA
350 mA
350 mA
350 mA
350 mA
350 mA
350 mA
350 mA
Input Supply
BP or external
switcher
BP or external
switcher
BP
BP
BP
BP
BP
BP
Notes
76. The max load is given for as VGEN2MODE = 0, and must take into account the capabilities of the external pass device and operating
conditions to manage its power dissipation. Load capability is 3.0 mA for VGEN2MODE = 1.
VGEN3 has an internal PMOS pass FET which will support loads up to 50 mA. For higher current capability, drive for an
external PNP is provided. The external PNP configuration is offered to avoid excess on-chip power dissipation at high loads, and
large differential between BP and output settings. The input pin for the integrated PMOS option is shared with the base current
drive pin for the PNP option. The external PNP configuration must be committed as a hardwired board level implementation, while
the operating mode is selected through the VGEN3CONFIG bit after startup. The VGEN3 is not automatically enabled during the
power up sequence, allowing software to properly set the VGEN3CONFIG bit before the regulator is activated. The
recommended PNP device is the ON Semiconductor NSS12100XV6T1G, which is capable of handling up to 250 mW of
MC13892
Analog Integrated Circuit Device Data
Freescale Semiconductor
87
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