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)： 3/32頁
文件大?。?/td> 316K
代理商： LTC3738CUHF
3
LTC3738
3738f
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= V
OUTEN
= V
SS
= 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
V
PSTH
Pulse Skip Threshold
Measured at FCB pin
UVR
Undervoltage SS Reset
V
CC
Lowered Until the SS Pin is Pulled Low
I
Q
Input DC Supply Current
(Note 4)
Normal Mode
V
CC
= 5V
Shutdown
V
OUTEN
= 0V
V
OUTEN
OUTEN Pin ON Threshold
V
OUTEN
, Ramping Positive
I
SS
Soft-Start Charge Current
V
SS
= 1.9V
V
SSARM
SS Pin Arming Threshold
V
SS
, Ramping Positive Until Short-Circuit
Latch-Off is Armed
V
SSLO
SS Pin Latch-Off Threshold
V
SS
, Ramping Negative
I
SCL
SS Discharge Current
Soft-Short Condition V
EAIN
= 0.3V, V
SS
= 4.5V
I
SDLHO
Shutdown Latch Disable Current
V
EAIN
= 0.3V, V
SS
= 4.5V
I
SENSE
Total SENSE Pins Source Current
SENSE3
+
, SENSE3
–
All Equal 1.2V
DF
MAX
Maximum Duty Factor
In Dropout
TG t
R,
t
F
Top Gate Rise Time
C
LOAD
= 3300pF
Top Gate Fall Time
C
LOAD
= 3300pF
BG t
R,
t
F
Bottom Gate Rise Time
C
LOAD
= 3300pF
Bottom Gate Fall Time
C
LOAD
= 3300pF
TG/BG t
1D
Top Gate Off to Bottom Gate On Delay All Controllers, C
LOAD
= 3300pF Each Driver
Synchronous Switch-On Delay Time
BG/TG t
2D
Bottom Gate Off to Top Gate On Delay All Controllers, C
LOAD
= 3300pF Each Driver
Top Switch-On Delay Time
t
ON(MIN)
Minimum On-Time
Tested with a Square Wave (Note 5)
VID Parameters
VID
IL
Maximum Low Level Input Voltage
VID
IH
Minimum High Level Input Voltage
VID9/VID10
VRM9 Enable Threshold at VID5
ATTEN
ERR
VID0 to VID4
(Note 6)
Power Good Output Indication
V
PGL
PGOOD Voltage Output Low
I
PGOOD
= 2mA
I
PGOOD
PGOOD Output Leakage
V
PGOOD
= 5V
PGOOD Trip Thesholds
V
DIFFOUT
with Respect to Set Output Voltage,
V
PGTHNEG
V
DIFFOUT
Ramping Negative
VID Code = 110101
V
PGTHPOS
V
DIFFOUT
Ramping Positive
PGOOD Goes Low After V
UVDLY
Delay
t
PGBLNK
Power Good Blanking
After VID Changes Outside PGOOD Window
The
●
denotes the specifications which apply over the full operating
MIN
TYP
MAX
UNITS
V
CC
– 1.5 V
CC
– 0.7 V
CC
– 0.3
3.3
3.8
V
V
4.5
2.5
20
0.6
–1.5
3.8
mA
μ
A
100
0.8
–2.5
4.5
0.4
–0.8
V
μ
A
V
3.3
–1.5
1.5
90
V
–5
μ
A
μ
A
μ
A
5
SENSE1
+
, SENSE1
–
, SENSE2
+
, SENSE2
–
,
120
95
98.5
30
40
30
20
60
%
ns
ns
ns
ns
ns
90
90
90
90
60
ns
120
ns
0.4
V
V
V
0.8
3.5
–0.25
V
CC
– 1
4.5
0.25
●
%
0.1
0.3
±
1
V
μ
A
–7
7
–10
10
100
–14
14
%
%
μ
s
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