LT3750 查看數據表（PDF） - Linear Technology
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LT3750 Datasheet PDF : 16 Pages
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LT3750
ABSOLUTE AXI U RATI GS
(Note 1)
VCC, VTRANS, GATE, DONE, CHARGE ...................... 24V
RBG ....................................................................... 1.5V
SOURCE ................................................................... 1V
Current into RDCM Pin ........................................ ±1mA
Current into RVOUT Pin ........................................ ±1mA
Current into DONE Pin ......................................... ±1mA
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
UW U
PACKAGE/ORDER I FOR ATIO
VTRANS 1
DONE 2
CHARGE 3
VCC 4
GND 5
TOP VIEW
10 RBG
9 RVOUT
8 RDCM
7 GATE
6 SOURCE
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 120°C/ W
ORDER PART NUMBER MS PART MARKING
LT3750EMS
LTBQD
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C. VCC = VTRANS = 5V unless otherwise specified.
PARAMETER
CONDITIONS
MIN TYP MAX
Minimum VCC
Minimum VTRANS
VCC Quiescent Current
Not Switching, CHARGE = 5V
Not Switching, CHARGE = 0V
●
2.8
3
●
2.5
3
1.6
2.5
1
VTRANS Quiescent Current
Not Switching, CHARGE = 5V
Not Switching, CHARGE = 0V
140 250
1
CHARGE Pin Current
CHARGE = 24V
CHARGE = 5V
CHARGE = 0V
24
19
1
CHARGE Pin Enable Voltage
●
0.87
1.1
CHARGE Pin Disable Voltage
● 0.2
0.6
Minimum CHARGE Pin Low Time
High→Low→High
20
VOUT Comparator Trip Voltage
VOUT Comparator Overdrive
RBG Pin Bias Current
Measured RBG Pin
1µs Pulse Width, Measured on RBG Pin
RBG = 1.2V
● 1.215 1.24 1.265
30
70
500
DCM Comparator Trip Voltage
Current Limit Comparator Trip Voltage
Measured as VDRAIN – VTRANS, RDCM = 43k (Note 3) ●
5
36
80
●
68
78
88
DONE Output Signal High
100kΩ to 5V
4.9
5
DONE Output Signal Low
100kΩ to 5V
0.1
0.2
DONE Pin Leakage Current
DONE = 2.5V
0.2
NMOS Minimum On Time
0.6
GATE Rise Time
50
GATE High Voltage
GATE Turn Off Propagation Delay
CGATE = 1nF, VCC = 5V
CGATE = 1nF, VCC = 24V
CGATE = 1nF
3
3.8
4.5
22
22.6 23.5
100
UNITS
V
V
mA
µA
µA
µA
µA
µA
µA
V
V
µs
V
mV
nA
mV
mV
V
V
µA
µs
ns
V
V
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3750E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Refer to Block Diagram for VDRAIN definition.
3750fa
2
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