參數(shù)資料
型號： LTC3738CUHF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning
中文描述： 5 A SWITCHING CONTROLLER, 630 kHz SWITCHING FREQ-MAX, PQCC38
封裝： 7 X 5 MM, PLASTIC, M0-220WHKD, QFN-38
文件頁數(shù)： 2/32頁
文件大?。?/td> 316K
代理商： LTC3738CUHF
2
LTC3738
3738f
ABSOLUTEW
(Note 1)
W
W
U
PACKAGE/ORDER U
U
W
Topside Driver Voltages (BOOST
N
)............38V to –0.3V
Switch Voltage (SW
N
)...................................32V to –5V
Boosted Driver Voltage (BOOST
N
– SW
N
)....7V to –0.3V
Peak Output Current <1ms (TG
N
, BG
N
) ..................... 5A
Supply Voltage (V
CC
), PGOOD, VR_HOTB
Pin Voltages ................................................7V to –0.3V
OUTEN, SS, PLLFLTR,
FCB/SYNC Voltages ................................... V
CC
to –0.3V
I
TH
Voltage................................................2.4V to –0.3V
IN
+
, IN
–
, VID0-VID5, TSNS .............................. 5V to 0V
AVP, SENSE
+
, SENSE
–
.................................. 1.9V to 0V
Operating Ambient Temperature Range.......0
°
C to 85
°
C
Junction Temperature (Note 2).............................125
°
C
Storage Temperature Range..................–65
°
C to 125
°
C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LTC3738CUHF
13 14 15 16
TOP VIEW
39
UHF PACKAGE
38-LEAD (7mm
×
5mm) PLASTIC QFN
T
JMAX
= 125
°
C,
θ
JA
= 34
°
C/W
EXPOSED PAD (PIN 39) IS SGND MUST BE SOLDERED TO PCB
17 18 19
38 37 36 35 34 33 32
24
23
22
21
20
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1
FCB/SYNC
PLLFLTR
IN
–
IN
+
AVP
EAIN
SENSE1
+
SENSE1
–
SENSE2
+
SENSE2
–
SENSE3
–
SENSE3
+
TG1
SW1
BOOST2
TG2
SW2
V
CC
BG1
PGND
BG2
BG3
SW3
TG3
O
V
V
V
V
P
B
S
I
T
T
V
V
B
9
10
11
12
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= V
OUTEN
= V
SS
= 5V unless otherwise noted.
The
●
denotes the specifications which apply over the full operating
SYMBOL
Main Control Loop
V
REGULATED
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated Voltage at IN
+
(Note 3); VID Code = 110101, V
ITH
= 1.2V
1.166
1.163
65
62
–5
1.175
1.175
75
75
1.184
1.187
85
88
5
V
V
●
V
SENSEMAX
Maximum Current Sense Threshold
V
EAIN
= 0.5V, V
ITH
Open,
V
SENSE1
–
,
V
SENSE2
–
,
V
SENSE3
–
= 0.8V, 1.85V
Worst-Case Error at V
SENSE(MAX)
(Note 3)
Measured in Servo Loop,
I
TH
Voltage = 1.2V to 0.7V
Measured in Servo Loop,
I
TH
Voltage = 1.2V to 2V
V
CC
= 4.5V to 7V
I
TH
= 1.2V, Sink/Source 25
μ
A (Note 3)
I
TH
= 1.2V, (g
m
Z
L
, Z
L
= Series 1k-100k
-1nF)
mV
mV
%
●
I
MATCH
V
LOADREG
Current Match
Output Voltage Load Regulation
●
●
0.1
–0.1
0.03
3.05
1.5
0.60
0.2
0.5
–0.5
%
%
V
REFLNREG
g
m
g
mOL
V
FCB
I
FCB
Output Voltage Line Regulation
Transconductance Amplifier g
m
Transconductance Amplifier GBW
Forced Continuous Threshold
FCB Bias Current
%/V
mmho
MHz
●
0.58
0.62
0.7
V
V
FCB
= 0.65V
μ
A
3738
UHF PART
MARKING
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