LM25115 Ver la hoja de datos (PDF) - National ->Texas Instruments
Número de pieza
componentes Descripción
Lista de partido
LM25115 Datasheet PDF : 17 Pages
| |||
Electrical Characteristics Unless otherwise specified, TJ = –40˚C to +125˚C, VBIAS = 12V, No Load on LO
or HO. (Continued)
Symbol
Parameter
CURRENT LIMIT
ILIMIT Amp Transconductance
Overall Transconductance
Positive Current Limit
Positive Current Limit Foldback
VCLneg Negative Current Limit
RAMP GENERATOR
SYNC Input Impedance
SYNC Threshold
Free Run Mode Peak Threshold
Current Mirror Gain
Discharge Impedance
LOW SIDE GATE DRIVER
VOLL
VOHL
LO Low-state Output Voltage
LO High-state Output Voltage
LO Rise Time
LO Fall Time
IOHL
Peak LO Source Current
IOLL
Peak LO Sink Current
HIGH SIDE GATE DRIVER
VOLH
VOHH
HO Low-state Output Voltage
HO High-state Output Voltage
HO Rise Time
HO High Side Fall Time
IOHH Peak HO Source Current
IOLH
Peak HO Sink Current
SWITCHING CHARACTERISITCS
LO Fall to HO Rise Delay
HO Fall to LO Rise Delay
SYNC Fall to HO Fall Delay
SYNC Rise to LO Fall Delay
THERMAL SHUTDOWN
TSD
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
THERMAL RESISTANCE
θJA
Junction to Ambient
θJA
Junction to Ambient
Conditions
VCL = VCS - VVOUT
VOUT = 6V and CO/COMP = 1.5V
VCL = VCS - VVOUT
VOUT = 0V and CO/COMP = 1.5V
VOUT = 6V
VCL = VCS - VVOUT to cause LO to
shutoff
End of cycle detection threshold
RAMP peak voltage with dc current
applied to SYNC.
Ratio of RAMP charge current to
SYNC input current.
ILO = 100mA
ILO = -100mA, VOHL = VCC -VLO
CLOAD = 1000pF
CLOAD = 1000pF
VLO = 0V
VLO = 12V
IHO = 100mA
IHO = -100mA, VOHH = VHB –VHO
CLOAD = 1000pF
CLOAD = 1000pF
VHO = 0V
VHO = 12V
CLOAD = 0
CLOAD = 0
CLOAD = 0
CLOAD = 0
MTC Package
SDA Package
Min Typ Max Units
16
mA / V
237
mA / V
37
45
53
mV
31
38
45
mV
-17
mV
2.5
kΩ
15
µA
2.3
V
2.7
3.3
A/A
100
Ω
0.2
0.5
V
0.4
0.8
V
15
ns
12
ns
2
A
2.5
A
0.2
0.5
V
0.4
0.8
V
15
ns
12
ns
2
A
2.5
A
70
ns
50
ns
120
ns
50
ns
150
165
˚C
25
˚C
125
˚C/W
32
˚C/W
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of
the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the
Electrical Characteristics tables.
Note 2: The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin.
Note 3: Min and Max limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical
Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 4: Device thermal limitations may limit usable range.
www.national.com
6
Share Link: 