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MC34701 Arkusz danych(PDF) 9 Page - Freescale Semiconductor, Inc

Numer części MC34701
Szczegółowy opis  1.5A Switch-Mode Power Supply with Linear Regulator
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Producent  FREESCALE [Freescale Semiconductor, Inc]
Strona internetowa  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC34701 Arkusz danych(HTML) 9 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
9
34701
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
ERROR AMPLIFIER (BUCK CONVERTER)
Input Impedance(11)
RIN
500
k
Output Impedance(11)
ROUT
150
DC Open Loop Gain(11)
AVOL
–80
dB
Gain Bandwidth Product(11)
GBW
–35
MHz
Slew Rate(11)
vSR
200
V/
µs
Output Voltage – High Level
VIN1 > 3.3V, IOEA = -1.0mA(11), (12)
VEA_OH
–2.0
V
Output Voltage – Low Level
IOEA = -1.0 mA(11), (12)
VEA_OL
–0.4
V
Oscillator Ramp(11)
VSCRAMP
–0.5
V
OSCILLATOR
CLKSYN Pin (open) Low Level Output Voltage
IOL = +1.0mA(13)
VOSC_OL
––
0.4
V
CLKSYN Pin (open) High Level Output Voltage
IOH = -1.0mA(14)
VOSC_OH
VDDI
-0.4V
V
CLKSYN Pin (grounded) Input Voltage Threshold
VOSC_IH
1.2–2.0
V
CLKSYN Pin Pull-up Resistance
RPU
60
240
k
Frequency Adjusting Reference Voltage
VFREQ
–1.26–
V
BOOST REGULATOR
Regulator Output Voltage
IBST = 20mA, VIN1 = VIN2 = 2.8V to 6.0V
VBST
7.3
7.7
8.3
V
Power MOSFET Q5 RDS(ON)(11)
IBD = 500mA, TA = 25°C
RDS(ON)Q5
650
1000
m
Regulator Recommended Output Capacitor
CBST
–10
µF
Regulator Recommended Output Capacitor Maximum ESR
ESRCBST
100
m
Notes
11.
Design information only. This parameter is not production tested.
12.
IOEA Refers to Error Amplifier Output Current.
13.
IOL Refers to I/O Low Level
14.
IOH Refers to I/O High Level
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions -40°C TA 85°C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3V using
the typical application circuit (see Figure 33), unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit


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