MC34920 データシートの表示（PDF） - Freescale Semiconductor
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MC34920 Datasheet PDF : 29 Pages
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ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions 21 V ≤ VVB+ ≤ 42 V, TA = 10°C to 55°C, TJ max = 135°C, VCC = 5.25 V max unless
otherwise noted. Typical values noted reflect the approximate parameter mean at TA = 25°C under typical conditions unless
otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
POWER INPUT
VVB+ Supply Voltage
VVB+ Standby Current
VVB+ = 42 V, ICC Load = 5.0 mA, No Serial Clock, No Motor Driver,
No Load on VV2
CMOS LOGIC LEVEL (6)
Input Current, High-Voltage State
Input Current, Low-Voltage State
Input Low Input Voltage State
VCC + 3.3 V ±10%
VCC + 5.0 V ±5%
Input High-Voltage State
VCC + 3.3 V ±10%
VCC + 5.0 V ±5%
VVB+
IVB+
IIH
IIL
VIL
VIH
21
–
1.0
14
–
0.1
-170
-0.1
–
–
–
–
2.1
–
3.3
–
42
V
mA
55
170
µA
–
µA
V
0.8
1.5
V
–
–
V1 AND V2 VOLTAGE REGULATORS
Regulator Output Voltage
Regulator Thermal Shutdown Junction Temperature
Regulator Thermal Junction Temperature
Overcurrent Detect Level (Peak) for IV1_SWITCH
Overcurrent Detect Level (Peak) for IV2_SWITCH
Short Circuit Detect Level (Peak) for IV1_SWITCH
In Soft Start and Foldback Modes
Short Circuit Detect Level (Peak) for IV2_SWITCH
In Soft Start and Foldback Modes
V1 Switching MOSFET on Resistance
Full On, Typical Value @ TJ = 25°C
V2 Switching MOSFET on Resistance
Full On, Typical Value @ TJ = 25°C
Regulator Feedback Input
Internal Reference Value of 2.50 V ±2%
Turn-Off Regulator
VV1 Output / VV2 Output = 0 V
VOUT
-4.0%
Nom
+4.0%
V
TJ (SHUTDOWN)
155
–
175
oC
TJ (ENABLE)
135
–
155
oC
IOC_V1
1.5
2.0
2.5
A
IOC_V2
2.5
3.25
4.0
A
ISC_V1
A
0.75
1.25
1.75
ISC_V2
A
1.75
2.25
2.75
RDS(ON)V1
Ω
–
2.0
–
RDS(ON)V2
Ω
–
0.75
–
VV1_FB,
VV2_FB
V
–
2.5
–
VOFFV1_FB,
VOFFV2_FB
3.0
–
V
–
Notes
6. Applicable to all logic level input signals. Inputs are to be designed to accept 3.3 V logic levels and be +5.0 V tolerant.
34920
6
Analog Integrated Circuit Device Data
Freescale Semiconductor
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