LTC4218IGN-PBF Просмотр технического описания (PDF) - Linear Technology
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LTC4218IGN-PBF Datasheet PDF : 18 Pages
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LTC4218
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 12V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
DC Characteristics
VDD
IDD
VDD(UVL)
VDD(UVTH)
ΔVDD(UVHYST)
VDD(OVTH)
ΔVDD(OVHYST)
VSOURCE(PGTH)
ΔVSOURCE(PGHYST)
ΔVSNS(TH)
Input Supply Range
Input Supply Current
Input Supply Undervoltage Lockout
Input Supply Undervoltage Threshold
Input Supply Undervoltage Hysteresis
Input Supply Overvoltage Threshold
Input Supply Overvoltage Hysteresis
SOURCE Power Good Threshold
SOURCE Power Good Hysteresis
Current Limit Sense Voltage Threshold
(VSENSE+ – VSENSE–)
ISENSE–(IN)
ISENSE+(IN)
ΔVGATE
ΔVGATE-HIGH(TH)
IGATE(UP)
IGATE(FST)
IGATE(DN)
SENSE– Input Current
SENSE+ Input Current
External N-Channel Gate Drive
(VGATE – VSOURCE)
Gate High Threshold (VGATE – VSOURCE)
External N-Channel Gate Pull-Up Current
External N-Channel Gate Fast Pull-Down
Current
External N-Channel Gate Pull-Down Current
Inputs
FET On
VDD Rising
LTC4218-12 Only VDD Rising
LTC4218-12 Only
LTC4218-12 Only VDD Rising
LTC4218-12 Only
LTC4218-12 Only VSOURCE Rising
LTC4218-12 Only
VFB = 1.23V
VFB = 0V
VFB = 1.23V, RSET = 20kΩ
VSENSE– = 12V
VSENSE+ = 12V
VDD = 2.9V to 26.5V (Note 3)
IGATE = 0, –1µA
Gate Drive On, VGATE = VSOURCE = 12V
Fast Turn Off, VGATE = 18V,
VSOURCE =12V
Gate Drive Off, VGATE = 18V,
VSOURCE =12V
l 2.9
l
l 2.65
l 9.6
l 520
l 14.7
l 183
l 10.2
l 127
l 14.25
l 2.8
l 6.7
l
l
l5
1.6
2.73
9.88
640
15.05
244
10.5
170
15
3.75
7.5
4
5.5
6.15
26.5
5
2.85
10.2
760
15.4
305
10.8
213
15.75
4.7
8.325
±10
±20
6.5
l 3.5
4.2
4.8
l –19
–24
–29
l 100
170
220
l 200
250
400
IIN
RIN
V(TH)
ΔVOV(HYST)
ΔVUV(HYST)
VUV(RTH)
ΔVFB(HYST)
RISET
ISOURCE
Outputs
OV, UV, FB Input Current
OV, UV, FB Input Resistance
OV, UV, FB Threshold Voltage
OV Hysteresis
UV Hysteresis
UV Reset Threshold Voltage
FB Power Good Hysteresis
ISET Internal Resistor
SOURCE Input Current
VPIN = 1.2V, LTC4218 Only
LTC4218-12 Only
l
0
±1
l 13
18
23
VPIN Rising
l 1.21 1.235 1.26
l 10
20
30
l 50
80
110
VUV Falling
l 0.55 0.62
0.7
l 10
20
30
l 19.5
20
20.5
VSOURCE = VGATE = 12V, LTC4218-12 Only l 50
70
90
VSOURCE = VGATE = 12V, LTC4218 Only
l
1
2
4
VSOURCE = VGATE = 0V
l
0
±1
VINTVCC
VOL
IOH
VTIMER(H)
VTIMER(L)
ITIMER(UP)
ITIMER(DN)
INTVCC Output Voltage
PG, FLT Output Low Voltage
PG, FLT Input Leakage Current
TIMER High Threshold
TIMER Low Threshold
TIMER Pull Up Current
TIMER Pull-Down Current
ISINK = 0mA, –10mA
ISINK = 2mA
V = 30V
VTIMER Rising
VTIMER Falling
VTIMER = 0V
VTIMER = 1.2V
l
l
l 1.2
l 0.1
l –80
l 1.4
3.1
0.4
0.8
0
±10
1.235 1.28
0.21
0.3
–100 –120
2
2.6
UNITS
V
mA
V
V
mV
V
mV
V
mV
mV
mV
mV
µA
µA
V
V
µA
mA
µA
µA
kΩ
V
mV
mV
V
mV
kΩ
µA
µA
µA
V
V
µA
V
V
µA
µA
For more information www.linear.com/LTC4218
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