MC34702EK View Datasheet(PDF) - Freescale Semiconductor
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MC34702EK Datasheet PDF : 38 Pages
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ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions -40°C ≤ TA ≤ 85°C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3 V using
the typical application circuit (see Figure 33) unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
ERROR AMPLIFIER (BUCK CONVERTER)
Input Impedance (11)
Output Impedance (11)
DC Open Loop Gain (11)
Gain Bandwidth Product (11)
Slew Rate (11)
Output Voltage – High Level
VIN1 > 3.3 V, IOEA = -1.0 mA (11), (12)
Output Voltage – Low Level
IOEA = -1.0 mA (11), (12)
Oscillator Ramp (11)
OSCILLATOR
ROUT
AVOL
GBW
SR
VEA_OH
VEA_OL
–
150
–
Ω
–
80
–
dB
–
35
–
MHz
–
200
–
V/µs
V
–
2.0
–
V
–
0.4
–
VSCRamp
–
0.5
–
V
VSCRamp
–
0.5
–
V
CLKSYN Pin (open) Low Level Output Voltage
IOL = +1.0 mA (13)
CLKSYN Pin (open) High Level Output Voltage
IOH = -1.0 mA (14)
CLKSYN Pin (grounded) Input Voltage Threshold
CLKSYN Pin Pullup Resistance
Frequency Adjusting Reference Voltage
BOOST REGULATOR
VOSC_OL
VOSC_OH
VOSC_IH
RPU
VFREQ
–
VDDI
- 0.4 V
1.2
60
–
–
–
–
–
1.26
0.4
V
V
–
2.0
V
240
kΩ
–
V
Regulator Output Voltage
IBST = 20 mA, VIN1 = VIN2 = 2.8 V to 6.0 V
Power MOSFET Q5 RDS(ON)(11)
IBD = 500 mA, TA = 25°C
VBST
7.3
RDS(ON)
–
Regulator Recommended Output Capacitor
CBST
–
Regulator Recommended Output Capacitor Maximum ESR
ESRCBST
–
Notes
11. Design information only. This parameter is not production tested.
12. IOEA Refers to Error Amplifier Output Current.
13. IOL Refers to IO Low Level Threshold Voltage Current
14. IOH Refers to IO High Level Threshold Voltage Current
V
7.7
8.3
mΩ
650
1000
10
–
µF
100
–
mΩ
Analog Integrated Circuit Device Data
Freescale Semiconductor
34702
9
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