LTC3732CUHF 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LTC3732CUHF
Linear Technology
LTC3732CUHF Datasheet PDF : 28 Pages
| |||
LTC3732
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = VRUN/SS = 5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
gm
gmOL
VFCB
IFCB
VBINHIBIT
UVR
IQ
IRUN/SS
VRUN/SS
VRUN/SSARM
Transconductance Amplifier gm
Transconductance Amplifier GBW
Forced Continuous Threshold
FCB Bias Current
Burst Inhibit Threshold
Undervoltage RUN/SS Reset
Input DC Supply Current
Normal Mode
Shutdown
Soft-Start Charge Current
RUN/SS Pin ON Threshold
RUN/SS Pin Arming Threshold
ITH = 1.2V, Sink/Source 25µA (Note 3)
ITH = 1.2V, (gm • ZL, ZL = Series 1k-100kΩ-1nF)
VFCB = 0.65V
Measured at FCB pin
VCC Lowered Until the RUN/SS Pin is Pulled Low
(Note 4)
VCC = 5V
VRUN/SS = 0V, VID0 to VID4 Open
VRUN/SS = 1.9V
VRUN/SS, Ramping Positive
VRUN/SS, Ramping Positive Until Short-Circuit
Latch-Off is Armed
q 3.6
5
6.6 mmho
3
MHz
q 0.58 0.60 0.62
V
0.2
0.7
µA
VCC – 1.5 VCC – 0.7 VCC – 0.3
V
3.3
3.8
4.5
V
2.2
3.5
mA
25
100
µA
–0.8 –1.5 –2.5
µA
1
1.5
1.9
V
3.8
4.5
V
VRUN/SSLO RUN/SS Pin Latch-Off Threshold
VRUN/SS, Ramping Negative
3.2
V
ISCL
RUN/SS Discharge Current
Soft-Short Condition VEAIN = 0.375V, VRUN/SS = 4.5V
–5
– 1.5
µA
ISDLHO
Shutdown Latch Disable Current
VEAIN = 0.375V, VRUN/SS = 4.5V
1.5
5
µA
ISENSE
SENSE Pins Source Current
SENSE1+, SENSE1–, SENSE2+, SENSE2–,
SENSE3+, SENSE3– All Equal 1.2V; Current at Each Pin
13
20
µA
DFMAX
TG tR,tF
BG tR, tF
TG/BG t1D
Maximum Duty Factor
In Dropout; VSENSEMAX ≤ 30mV
Top Gate Rise Time
Top Gate Fall Time
CLOAD = 3300pF
CLOAD = 3300pF
Bottom Gate Rise Time
Bottom Gate Fall Time
CLOAD = 3300pF
CLOAD = 3300pF
Top Gate Off to Bottom Gate On Delay All Controllers, CLOAD = 3300pF Each Driver
Synchronous Switch-On Delay Time
95
98.5
%
30
90
ns
40
90
ns
30
90
ns
20
90
ns
50
ns
BG/TG t2D
Bottom Gate Off to Top Gate On Delay All Controllers, CLOAD = 3300pF Each Driver
Top Switch-On Delay Time
60
ns
tON(MIN)
Minimum On-Time
VID Parameters
Tested with a Square Wave (Note 5)
110
ns
VIDIL
Maximum Low Level Input Voltage
VIDIH
Minimum High Level Input Voltage
VIDPULLUP VID0 to VID4 Internal Pull-Up Current VVID = 0V
ATTENERR VID0 to VID4
(Note 6)
Power Good Output Indication
0.4
V
2
V
3
µA
q –0.25
0.25
%
VPGL
IPGOOD
VPGTHNEG
VPGTHPOS
VPGDLY
PGOOD Voltage Output Low
PGOOD Output Leakage
PGOOD Trip Thesholds
VDIFFOUT Ramping Negative
VDIFFOUT Ramping Positive
Power Good Fault Report Delay
IPGOOD = 2mA
VPGOOD = 5V
VDIFFOUT with Respect to Set Output Voltage,
VID Code = 11111,
PGOOD Goes Low After VUVDLY Delay
After VEAIN is Forced Outside the PGOOD Thresholds
0.1
0.3
V
1
µA
–7
–10 –13
%
7
11
13
%
100
150
µs
3732f
3
Share Link: