LTC1708-PG_1 查看數據表（PDF） - Linear Technology
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LTC1708-PG_1
Linear Technology
LTC1708-PG_1 Datasheet PDF : 32 Pages
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LTC1708-PG
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (VIN).........................36V to – 0.3V
Topside Driver Voltages
(BOOST1, BOOST2) ...................................42V to – 0.3V
Switch Voltage (SW1, SW2) .........................36V to – 5V
INTVCC, EXTVCC, RUN/SS1, RUN/SS2,
(BOOST1-SW1), (BOOST2-SW2), ...............7V to – 0.3V
SENSE1+, SENSE2 +, SENSE1–,
SENSE2 – Voltages ....................... (1.1)INTVCC to – 0.3V
FREQSET, STBYMD, FCB, VIDVCC, VID0-4,
PGOOD Voltages ..........................................7V to – 0.3V
ITH1, ITH2, EAIN1, EAIN2, ATTNIN,
ATTNOUT Voltages ...................................2.7V to – 0.3V
Peak Output Current <10µs (TG1, TG2, BG1, BG2) ... 3A
INTVCC Peak 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/SS1 1
SENSE1+ 2
SENSE1– 3
EAIN1 4
FREQSET 5
STBYMD 6
FCB 7
ITH1 8
SGND 9
3.3VOUT 10
ITH2 11
EAIN2 12
SENSE2– 13
SENSE2+ 14
ATTNOUT 15
ATTNIN 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 RUN/SS2
22 VIDVCC
21 VID4
20 VID3
19 VID2
ORDER PART
NUMBER
LTC1708EG-PG
G PACKAGE
36-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 85°C/W
Consult factory for Industrial and Military grade parts.
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
CONDITIONS
MIN TYP MAX UNITS
Main Control Loops
VEAIN1, 2
Regulated Feedback Voltage
at EAIN Pin
(Note 4); ITH1, 2 Voltage = 1.2V
q 0.792 0.800 0.808
V
IEAIN1, 2
VREFLNREG
VLOADREG
gm1, 2
gmOL1, 2
IQ
VFCB
IFCB
VBINHIBIT
UVLO
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
Transconductance Amplifier gm
Transconductance Amplifier GBW
Input DC Supply Current
Normal Mode
Standby
Shutdown
Forced Continuous Threshold
Forced Continuous Current
Burst Inhibit Threshold
Undervoltage Lockout
(Note 4)
VIN = 3.6V to 30V (Note 4)
(Note 4)
Measured in Servo Loop; ITH1, 2 Voltage = 1.2V to 0.7V q
Measured in Servo Loop; ITH1, 2 Voltage = 1.2V to 2.0V q
ITH1, 2 = 1.2V; Sink/Source 5µA; (Note 4)
ITH1, 2 = 1.2V; (gm • ZL, No Ext Load) (Note 4)
(Note 5)
EXTVCC Tied to GND; VID Inputs Open Circuit
VRUN/SS1, 2 = 0V, VSTBYMD > 2V
VRUN/SS1, 2 = 0V, VSTBYMD = Open
q
VFCB = 0.85V
Measured at FCB pin
VIN Ramping Down
0.760
– 0.3
–5
0.002
0.1
– 0.1
1.3
3
850
125
20
0.800
– 0.18
4.3
3.5
– 50
0.02
0.5
– 0.5
35
0.840
– 0.1
4.8
4
nA
%/V
%
%
mmho
MHz
µA
µA
µA
V
µA
V
V
2
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