參數(shù)資料
型號: LTC3773EG
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO36
封裝: 5.30 MM, PLASTIC, SSOP-36
文件頁數(shù): 12/32頁
文件大?。?/td> 461K
代理商: LTC3773EG
LTC3773
2
3773fa
PACKAGE/ORDER INFORMATION
ABSOLUTE MAXIMUM RATINGS
Topside Driver Voltage (BOOSTn) .............. 42V to – 0.3V
Switch Voltage (SWn) ................................... 36V to – 1V
Boosted Driver Voltage (BOOSTn – SWn).... 7V to – 0.3V
Supply Voltages (VCC, VDR)..........................7V to –0.3V
PGOOD, PHASEMD, PLLFLTR, PLLIN/FC, SDBn,
TRACKn, VFBn...............................(VCC + 0.3V) to –0.3V
SENSE+n, SENSE n ........................ (1.1 VCC) to –0.3V
ITHn Voltage...............................................2.7V to –0.3V
(Note 1)
(Note 3) The
denotes the specications which apply over the full
operating temperature range, otherwise specications are at TA = 25°C. VCC = VDR = VBOOST = VSDB = 5V, unless otherwise noted.
Extended Commercial Operating
Temperature Range (Note 2)................– 40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range...................– 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
G Package......................................................... 300°C
Peak Body Temperature UHF Package .................. 240°C
ORDER PART
NUMBER
TJMAX = 125°C, θJA = 95°C/W
Consult LTC Marketing for parts specied with wider operating temperature ranges.
LTC3773EG
ORDER PART
NUMBER
UHF PART
MARKING
3773E
LTC3773EUHF
TJMAX = 125°C, θJA = 34°C/W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
G PACKAGE
36-LEAD PLASTIC SSOP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
PHASEMD
PGOOD
BOOST1
TG1
SW1
SW2
TG2
BOOST2
BOOST3
TG3
SW3
BG1
BG2
VDR
PGND
BG3
PLLIN/FC
PLLFLTR
SENSE1+
SENSE1
SDB
TRACK1
VFB1
ITH1
SGND
ITH2
ITH3
VFB2
VFB3
TRACK2
TRACK3
SENSE2
SENSE2+
SENSE3
SENSE3+
VCC
13 14 15 16
TOP VIEW
39
UHF PACKAGE
38-LEAD (5mm
× 7mm) PLASTIC QFN
EXPOSED PAD IS PGND (PIN 39),
MUST BE SOLDERED TO PCB
17 18 19
38 37 36 35 34 33 32
24
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1
TRACK1
VFB1
ITH1
SGND
ITH2
ITH3
VFB2
VFB3
TRACK2
TRACK3
SENSE2
SENSE2+
BOOST1
TG1
SW1
SW2
TG2
BOOST2
BOOST3
TG3
SW3
BG1
BG2
VDR
SDB3
SDB2
SDB1
SENSE1
SENSE1
+
PHASEMD
PGOOD
SENSE3
SENSE3
+
V
CC
PLLFLTR
PLLIN/FC
CLKOUT
BG3
23
22
21
20
9
10
11
12
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loop
VFB
Feedback Voltage
VITH = 1.2V, 0°C ≤ T ≤ 85°C (Note 4)
0.594
0.600
0.606
V
0.591
0.600
0.609
V
IVFB
Feedback Pin Input Current
0 ≤ VFB ≤ 1V
– 15
– 100
nA
VSENSEMAX
Maximum Current Sense Threshold
VFB = 0.55V, VTRACK = 1V, VSENSE
= 2.5V
65
75
85
mV
60
75
90
mV
VFBLOADREG
Feedback Voltage Load Regulation
Measured in Servo Loop (Note 4)
ΔITH Voltage = 1.2V to 0.7V
0.15
0.5
%
ΔITH Voltage = 1.2V to 2V
– 0.2
– 0.5
%
VFBLNREG
Feedback Voltage Line Regulation
VCC = 4.5V to 6V
0.01
%/V
gm
Transconductance Amplier gm
VITH = 1.2V, Sink/Source 25A (Note 4)
2.3
2.7
3.2
mmho
fu
Transconductance Amplier GBW
VITH = 1.2V (Note 5)
3
MHz
AERR
Transconductance Amplier DC Gain
VITH = 0.8V to 1.6V
50
56
dB
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