LTC3707 查看數據表（PDF） - Linear Technology
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LTC3707 Datasheet PDF : 32 Pages
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LTC3707
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (VIN).........................30V to – 0.3V
Top Side Driver Voltages
(BOOST1, BOOST2) ...................................36V to – 0.3V
Switch Voltage (SW1, SW2) .........................30V to – 5V
INTVCC, EXTVCC, RUN/SS1, RUN/SS2, (BOOST1-SW1),
(BOOST2-SW2), PGOOD .............................7V to – 0.3V
SENSE1+, SENSE2 +, SENSE1–,
SENSE2 – Voltages ........................ (1.1)INTVCC to – 0.3V
FREQSET, STBYMD, FCB Voltage ........ INTVCC to – 0.3V
ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ... 2.7V to – 0.3V
Peak Output Current <10µs (TG1, TG2, BG1, BG2) ... 3A
INTVCC Peak Output Current ................................ 40mA
Operating Temperature Range
LTC3707EG (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/SS1 1
SENSE1+ 2
SENSE1– 3
VOSENSE1 4
FREQSET 5
STBYMD 6
FCB 7
ITH1 8
SGND 9
3.3VOUT 10
ITH2 11
VOSENSE2 12
SENSE2– 13
SENSE2+ 14
28 PGOOD
27 TG1
26 SW1
25 BOOST1
24 VIN
23 BG1
22 EXTVCC
21 INTVCC
20 PGND
19 BG2
18 BOOST2
17 SW2
16 TG2
15 RUN/SS2
GN PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 95°C/W
ORDER PART
NUMBER
LTC3707EGN
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, VRUN/SS1, 2 = 5V unless otherwise noted.
SYMBOL PARAMETER
Main Control Loops
VOSENSE1, 2
IVOSENSE1, 2
VREFLNREG
VLOADREG
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
gm1, 2
gmGBW1, 2
IQ
VFCB
IFCB
VBINHIBIT
UVLO
VOVL
ISENSE
VSTBYMD MS
Transconductance Amplifier gm
Transconductance Amplifier GBW
Input DC Supply Current
Normal Mode
Standby
Shutdown
Forced Continuous Threshold
Forced Continuous Pin Current
Burst Inhibit (Constant Frequency)
Threshold
Undervoltage Lockout
Feedback Overvoltage Lockout
Sense Pins Total Source Current
Master Shutdown Threshold
CONDITIONS
MIN
(Note 4); ITH1, 2 Voltage = 1.2V
(Note 4)
VIN = 3.6V to 30V (Note 4)
(Note 4)
Measured in Servo Loop; ∆ITH Voltage = 1.2V to 0.7V
Measured in Servo Loop; ∆ITH Voltage = 1.2V to 2.0V
ITH1, 2 = 1.2V; Sink/Source 5uA; (Note 4)
ITH1, 2 = 1.2V; (Note 4)
(Note 5)
EXTVCC Tied to VOUT1; VOUT1 = 5V
VRUN/SS1, 2 = 0V, VSTBYMD > 2V
VRUN/SS1, 2 = 0V, VSTBYMD = Open
VFCB = 0.85V
Measured at FCB pin
q 0.788
q
q
q 0.76
– 0.30
VIN Ramping Down
Measured at VOSENSE1, 2
(Each Channel); VSENSE1–, 2– = VSENSE1+, 2+ = 0V
VSTBYMD Ramping Down
q
q 0.84
– 90
0.4
TYP
0.800
–5
0.002
0.1
– 0.1
1.3
3
350
125
20
0.800
– 0.18
4.3
3.5
0.86
– 60
0.6
MAX
0.812
– 50
0.02
0.5
– 0.5
35
0.84
– 0.1
4.8
4
0.88
UNITS
V
nA
%/V
%
%
mmho
MHz
µA
µA
µA
V
µA
V
V
V
µA
V
3707f
2
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