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LM4651 bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

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Electrical Characteristics for LM4651 (Notes 1, 2, 7)
The following specifications apply for +V
CC = +20V, −VEE = −20V, fSW = 125kHz, unless otherwise specified. Limits apply for
T
A = 25˚C. For specific circuit values, refer to Figure 1 (Typical Audio Application Circuit).
Symbol
Parameter
Conditions
LM4651
Min
Typical
Max
Units
I
CQ
Total Quiescent Current
LM4652 not connected, I
O = 0mA,
|I
VCC+|+|IVEE−|, RDLY =0Ω
15
36
45
mA
Standby
V
IL
Standby Low Input Voltage
Not in Standby Mode
0.8
V
V
IH
Standby High Input Voltage
In Standby Mode
2.5
2.0
V
f
SW
Switching Frequency Range
R
OSC = 15kΩ
65
kHz
R
OSC =0Ω
200
kHz
f
SWerror
50% Duty Cycle Error
R
OSC =4kΩ,fSW = 125kHz
1
3
%
T
dead
Dead Time
R
DLY =0Ω
27
ns
T
OverMod
Over Modulation Protection Time
Pulse Width Measured at 50%
310
ns
Electrical Characteristics for LM4652 (Notes 1, 2, 7)
The following specifications apply for +V
CC = +20V, −VEE = −20V, unless otherwise specified. Limits apply for TA = 25˚C. For
specific circuit values, refer to Figure 1 (Typical Audio Application Circuit).
Symbol
Parameter
Conditions
LM4652
Min
Typical
Max
Units
V
(BR)DSS
Drain−to−Source Breakdown
Voltage
VGS = 0
55
V
I
DSS
Drain−to−Source Leakage Current
VDS = 44V
DC, VGS = 0V
1.0
mA
VGS
th
Gate Threshold Voltage
VDS = VGS, ID = 1mA
DC
0.85
V
R
DS(ON)
Static Drain−to−Source On
Resistance
VGS=6V
DC, ID=6ADC
200
300
m
t
r
Rise Time
VGD=6V
DC, VDS = 40VDC,RGATE
=0
25
ns
t
f
Fall Time
VGD=6V
DC, VDS = 40VDC,RGATE
=0
26
ns
I
D
Maximum Saturation Drain
Current
VGS=6V
DC, VDS = 10VDC
810
A
DC
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 2: All voltages are measured with respect to the GND pin unless otherwise specified.
Note 3: For operating at case temperatures above 25˚C, the LM4651 must be de−rated based on a 150˚C maximum junction temperature and a thermal resistance
of
θJA = 62 ˚C/W (junction to ambient), while the LM4652 must be de−rated based on a 150˚C maximum junction temperature and a thermal resistance of θJC =
2.0 ˚C/W (junction to case) for the isolated package (TF) or a thermal resistance of
θJC = 1.0˚C/W (junction to case) for the non-isolated package (T).
Note 4: Human body model, 100 pF discharged through a 1.5 k
Ω resistor.
Note 5: Machine Model, 220pF-240pF discharge through all pins.
Note 6: The operating junction temperature maximum, Tjmax is 150˚C.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: The LM4652TA package TA15A is a non-isolated package, setting the tab of the device and the heat sink at −V potential when the LM4652 is directly
mounted to the heat sink using only thermal compound. If a mica washer is used in addition to thermal compound,
θCS (case to sink) is increased, but the heat sink
will be isolated from −V.
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