参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 70/159页
文件大小: 0K
描述: IC POWER MANAGEMENT 206MAPBGA
标准包装: 160
应用: 通用
电源电压: 1.8 V ~ 4.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 206-LFBGA
供应商设备封装: 206-MAPBGA(13x13)
包装: 托盘
Functional Block Description
7.5.6.7
VUSB2
VUSB2 has an internal PMOS pass FET which will support loads up to 65 mA. To support load currents an external PNP is
provided. The external PNP configuration is offered to avoid excess on-chip power dissipation at higher loads and large
differentials between BP and output settings. For lower current requirements, an integrated PMOS pass FET is included. 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. The recommended PNP device is the ON
Semiconductor? NSS12100XV6T1G, which is capable of handling up to 250 mW of continuous dissipation, at minimum footprint
and 75 °C of ambient. For use cases where up to 500 mW of dissipation is required, the recommended PNP device is ON
Semiconductor NSS12100UW3TCG. For stability reasons, a total resistance of 50 m ? ? 20% in series with the output
capacitance is required. The total resistance includes the ESR of the capacitor plus an external resistance provided by a discrete
resistor or PCB circuit trace.
A short-circuit condition will shut down the VUSB2 regulator and generate an interrupt for SCPI, if REGSCPEN is set.
The nominal output voltage of this regulator is SPI configurable, and can be 2.5 V, 2.6 V, 2.75 V, or 3.0 V. The output current
when working with the internal pass FET is 65 mA, and could be up to 350 mA when working with an external PNP.
Table 59. VUSB2 Voltage Control
Parameter Value
ILoad max
Output
Voltage VUSB2CONFIG = 0 VUSB2CONFIG = 1
Internal Pass FET External PNP
VUSB2[1:0]
00
01
10
11
2.5 V
2.6 V
2.75 V
3.00 V
65 mA
65 mA
65 mA
65 mA
350 mA
350 mA
350 mA
350 mA
Table 60. VUSB2 Electrical Specification
Characteristics noted under conditions BP = 3.6 V, V BUS = 5.0 V, - 40 ? C ? T A ? 85 ? C, unless otherwise noted. Typical values
at BP = 3.6 V and T A = 25 °C under nominal conditions, unless otherwise noted.
Symbol
Characteristic
Min
Typ
Max
Unit
Notes
GENERAL
V USB2IN
Operating Input Voltage Range V INMIN to V INMAX
V NOM +
0.25
-
4.5
V
I USB2
Operating Current Load Range IL MIN to IL MAX
mA
V USB2IN
? Internal pass FET
? External PNP Not exceeding PNP max power
Extended Input Voltage Range
? Performance may be out of specification
0.0
0.0
UVDET
-
-
-
65
350
4.5
V
VUSB2 ACTIVE MODE - DC
V USB2
Output Voltage V OUT
V
? V INMIN < V IN < V INMAX IL MIN < IL < IL MAX
V USB2LOPP Load Regulation
? 1.0 mA < IL < IL MAX For any V INMIN < V IN < V INMAX
Line Regulation
V USB2LIPP
? V INMIN < V IN < V INMAX For any IL MIN < IL < IL MAX
Active Mode Quiescent Current, V INMIN < V IN < V INMAX
I USB2Q
? IL = 0, Internal PMOS configuration
? V INMIN < V IN < V INMAX IL = 0, External PNP configuration
V NOM - 3%
-
-
-
-
V NOM
0.25
8.0
25
30
V NOM + 3%
-
-
-
-
mV/mA
mV
μA
MC34708
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
70
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