LTC3719 查看數據表（PDF） - Linear Technology
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LTC3719 Datasheet PDF : 32 Pages
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LTC3719
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (VIN).........................36V to – 0.3V
Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V
Switch Voltage (SW1, 2) .............................36V to – 5 V
SENSE1+, SENSE2 +, SENSE1–,
SENSE2 – Voltages ................... (1.1)INTVCC to – 0.3V
EAIN, VOS+, VOS–, EXTVCC, INTVCC, RUN/SS,
VBIAS, ATTENIN, ATTENOUT, PGOOD, NO_CPU,
VID0–VID4, Voltages ...............................7V to – 0.3V
Boosted Driver Voltage (BOOST-SW) ..........7V to – 0.3V
PLLFLTR, PLLIN, VDIFFOUT,
FCB Voltages ................................... INTVCC to – 0.3V
ITH Voltage ................................................2.7V to – 0.3V
Peak Output Current <1µs(TG1, 2, BG1, 2) ................ 3A
INTVCC RMS Output Current ................................ 50mA
Operating Ambient Temperature Range
(Note 2) .............................................. – 40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
RUN/SS 1
SENSE1+ 2
SENSE1– 3
EAIN 4
PLLFLTR 5
PLLIN 6
FCB 7
ITH 8
SGND 9
VDIFFOUT 10
VOS– 11
VOS+ 12
SENSE2– 13
SENSE2+ 14
ATTENOUT 15
NO_CPU 16
VID0 17
VID1 18
36 PGOOD
35 TG1
34 SW1
33 BOOST1
32 VIN
31 BG1
30 EXTVCC
29 INTVCC
28 PGND
27 BG2
26 BOOST2
25 SW2
24 TG2
23 ATTENIN
22 VBIAS
21 VID4
20 VID3
19 VID2
ORDER PART
NUMBER
LTC3719EG
G PACKAGE
36-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 85°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VBIAS = 5V, VRUN/SS = 5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loop
VEAIN
Regulated Feedback Voltage
ITH Voltage = 1.2V; Measured at VEAIN (Note 4)
q 0.594 0.600 0.606
V
VSENSEMAX Maximum Current Sense Threshold
q 62
75
88
mV
IINEAIN
Feedback Current
(Note 4)
–5
– 50
nA
VLOADREG Output Voltage Load Regulation
(Note 4)
Measured in Servo Loop, ∆ITH Voltage: 1.2V to 0.7V q
Measured in Servo Loop, ∆ITH Voltage: 1.2V to 2V q
0.1
0.5
%
– 0.1 – 0.5
%
VREFLNREG Reference Voltage Line Regulation
VIN = 3.6V to 30V (Note 4)
0.002 0.02
%/V
VFCB
Forced Continuous Threshold
q 0.57
0.6
0.63
V
IFCB
Forced Continuous Current
– 0.17 – 1
µA
VBINHIBIT
Burst Inhibit (Constant Frequency)
Threshold
Measured at FCB pin
4.3
4.8
V
VOVL
UVLO
gm
gmOL
Output Overvoltage Threshold
Undervoltage Lockout
Transconductance Amplifier gm
Transconductance Amplifier Gain
Measured at VEAIN
VIN Ramping Down
ITH = 1.2V, Sink/Source 5µA (Note 4)
ITH = 1.2V, (gm • ZL; No Ext Load) (Note 4)
q 0.64 0.66 0.68
V
3
3.33
4
V
3
mmho
1.5
V/mV
2
sn3719 3719fs
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