参数资料
型号: MC13892VLR2
厂商: Freescale Semiconductor
文件页数: 82/158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
Figure 23. Boost Regulator Architecture
Enabling of SWBST is accomplished through the SWBSTEN SPI control bit.
Table 52. Switch Mode Supply SWBST Control Function Summary
Parameter
SWBSTEN
Value
0
1
Function
SWBST OFF
SWBST ON
5V Boost Effic ie ncy
(Vin = 3 .6 V, Vou t = 5V)
100.00
95.00
90.00
85.00
80.00
0
1 00
2 00
300
Boost Load Current (mA)
Figure 24. Boost Regulator Efficiency
LINEAR REGULATORS
This section describes the linear regulators provided. For convenience, these regulators are named to indicate their typical or
possible applications, but the supplies are not limited to these uses and may be applied to any loads within the specified regulator
capabilities.
A low-power standby mode controlled by STANDBY is provided in which the bias current is aggressively reduced. This mode
is useful for deep sleep operation where certain supplies cannot be disabled, but active regulation can be tolerated with lesser
parametric requirements. The output drive capability and performance are limited in this mode. Refer to STANDBY Event
Definition and Control in Power Control System for more details.
Some dedicated regulators are covered in their related chapters rather than in the Supplies chapter (i.e., the VUSB and VUSB2
supplies are included in Connectivity ).
Apart from the integrated linear regulators, there are also GPO output pins provided to enable and disable discrete regulators
or functional blocks, or to use as a general purpose output for any system need. For example, one application may be to enable
a battery pack thermistor bias in synchronization with timed ADC conversions.
MC13892
Analog Integrated Circuit Device Data
82
Freescale Semiconductor
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