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| 型号： | MC13892JVLR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 83/158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) |
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FUNCTIONAL DEVICE OPERATION
SUPPLIES
All regulators use the main bandgap as the reference. The main bandgap is bypassed with a capacitor at REFCORE. 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 VCOREDIG and the bandgap. No external DC loading is allowed on VCOREDIG or REFCORE. VCOREDIG
is kept powered as long as there is a valid supply and/or coin cell. Table 53 captures the main characteristics of the core circuitry.
Table 53. Core Specifications
Reference
VCOREDIG (Digital core supply)
VCORE (Analog core supply)
REFCORE (Bandgap / Regulator Reference)
Parameter
Output voltage in Off mode (74)
Bypass Capacitor
Output voltage in Off mode (74)
Bypass Capacitor
Output voltage (73)
Absolute Accuracy
Temperature Drift
Bypass Capacitor
Target
1.5 V
1.2 V
2.2 μ F typ (0.65 μ F derated)
2.775 V
0.0 V
2.2 μ F typ (0.65 μ F derated)
1.20 V
0.50%
0.25%
100 nF typ (65 nF derated)
Notes
73. 3.0 V < BP < 4.65 V, no external loading on VCOREDIG, VCORE, or REFCORE. Extended operation down to UVDET, but no system
malfunction.
74. The core is in On mode when charging or when the state machine of the IC is not in the Off mode nor in the power cut mode. Otherwise,
the core is in Off mode.
REGULATORS GENERAL CHARACTERISTICS
The following applies to all linear regulators unless otherwise specified.
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Specifications are for an ambient temperature of -40 to +85 °C.
Advised bypass capacitor is the Murata? GRM155R60G225ME15 which comes in a 0402 case.
In general, parametric performance specifications assume the use of low ESR X5R ceramic capacitors with 20% accuracy
and 15% temperature spread, for a worst case stack up of 35% from the nominal value. Use of other types with wider
temperature variation may require a larger room temperature nominal capacitance value to meet performance specs over
temperature. In addition, capacitor derating as a function of DC bias voltage requires special attention. Finally, minimum
bypass capacitor guidelines are provided for stability and transient performance. Larger values may be applied; performance
metrics may be altered and generally improved, but should be confirmed in system applications.
Regulators which require a minimum output capacitor ESR (those with external PNPs) can avoid an external resistor if ESR
is assured with capacitor specifications, or board level trace resistance.
The output voltage tolerance specified for each of the linear regulators include process variation, temperature range, static
line regulation, and static load regulation.
The PSRR of the regulators is measured with the perturbed signal at the input of the regulator. The power management IC is
supplied separately from the input of the regulator and does not contain the perturbed signal. During measurements care must
be taken not to reach the drop out of the regulator under test.
In the Low-power mode the output performance is degraded. Only those parameters listed in the Low-power mode section are
guaranteed. In this mode, the output current is limited to much lower currents than in the Active mode.
Regulator performance is degraded in the extended input voltage range. This means that the supply still behaves as a
regulator and will try to hold up the output voltage by turning the pass device fully on. As a result, the bias current will increase
and all performance parameters will be heavily degraded, such as PSRR and load regulation.
Note that in some cases, the minimum operating range specifications may be conflicting due to numerous set point and biasing
options, as well as the potential to run BP into one of the software or hardware shutdown thresholds. The specifications are
general guidelines which should be interpreted with some care.
When a regulator gets disabled, the output will be pulled towards ground by an internal pull-down. The pull-down is also
activated when RESETB goes low.
32 kHz spur levels are specified for fully loaded conditions.
MC13892
Analog Integrated Circuit Device Data
Freescale Semiconductor
83
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