参数资料
型号: SPC5632MF0MLQA6
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: FLASH, 60 MHz, MICROCONTROLLER, PQFP144
封装: 20 X 20 MM, 0.50 MM PITCH, 1.40 HEIGHT, ROHS COMPLIANT, LQFP-144
文件页数: 89/122页
文件大小: 1173K
代理商: SPC5632MF0MLQA6
Electrical characteristics
MPC5634M Microcontroller Data Sheet, Rev. 6
Freescale Semiconductor
69
3.6.1
Regulator example
Figure 7. Core voltage regulator controller external components preferred configuration
3.6.2
Recommended power transistors
The following NPN transistors are recommended for use with the on-chip voltage regulator controller: ON SemiconductorTM
BCP68T1 or NJD2873 as well as Philips SemiconductorTM BCP68. The collector of the external transistor is preferably
connected to the same voltage supply source as the output stage of the regulator.
Table 16. Recommended operating characteristics
Symbol
Parameter
Value
Unit
hFE (β)
DC current gain (Beta)
60 – 550
PD
Absolute minimum power dissipation
>1.0
(1.5 preferred)
W
ICMaxDC Minimum peak collector current
1.0
A
VCESAT Collector-to-emitter saturation voltage
> 2001
1 Adjust resistor at bipolar transistor collector for 3.3 V/5.0 V to avoid VCE < VCE
SAT
mV
VBE
Base-to-emitter voltage
>0.7
V
MCU
Mandatory decoupling
capacitor network
VDDREG
VRCCTL
VDD
VSS
4
× 6.8 μF4 × 220 nF
680 nF
15
Ω
10
μF
1.1–5.6
Ω
10
μF
Resistor may or may not be
required. It depends on the
allowable power dissipation
of the npn bypass transistor
device.
Emitter and collector capacitors
(6.8
μF and 10 μF) should be
matched (same type) and ESR
should be lower than 200 m
Ω.
Notes:
1. The VRCCTL capacitor is required.
2. The bypass transistor MUST be operated out of its saturation region.
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