参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 26/159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
Table 13. Power Up Sequence i.MX50
Tap x 2.0 ms PUMS [4:1] = [0100, 1011, 1100, 1101, 1110, 1111] (i.MX50/I.MX53)
0
1
2
3
4
5
6
7
8
9
SW2
SW3
SW1A/B
VDAC
SW4A/B, VREFDDR
SW5
VGEN2, VUSB2
VPLL
VGEN1
VUSB (34)
Notes:
34. The VUSB regulator is only enabled if 5.0 V is present on the VBUS pin. By
default VUSB will be supplied by the VBUS pin.
7.2
Bias and References Block Description and Application
Information
All regulators use the main bandgap as the reference. The main bandgap is bypassed with a capacitor at VCOREREF. The
bandgap and the rest of the core circuitry is supplied from VCORE. The performance of the regulators is directly dependent on
the performance of VCORE and the bandgap. No external DC loading is allowed on VCORE, VCOREDIG, and REFCORE.
VCOREDIG is kept powered as long as there is a valid supply and/or coin cell. Table 14 shows the main characteristics of the
core circuitry.
Table 14. Core Voltages Electrical Specifications
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
VCOREDIG (DIGITAL CORE SUPPLY)
V COREDIG
Output voltage
V
? ON mode
? OFF mode with good battery and RTC mode
-
-
1.5
1.2
-
-
C COREDIG
V COREDIG bypass capacitor
-
1.0
-
? F
VDDLP (DIGITAL CORE SUPPLY - LOWER POWER)
V DDLP
Output voltage
V
? ON mode with good battery
? OFF mode with good battery
? RTC mode
-
-
-
1.5
1.2
1.2
-
-
-
C DDLP
V DDLP bypass capacitor
-
100
-
pF
MC34708
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
26
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