LT1618EMS 데이터 시트보기 (PDF) - Linear Technology
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LT1618EMS Datasheet PDF : 16 Pages
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LT1618
ABSOLUTE AXI U RATI GS (Note 1)
VIN, SHDN Voltage ................................................... 18V
SW Voltage .............................................................. 36V
ISP, ISN Voltage ...................................................... 36V
IADJ Voltage ............................................................... 6V
FB Voltage .............................................................. 1.5V
VC Voltage .............................................................. 1.5V
Junction Temperature ........................................... 125°C
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range
MSOP ............................................... – 65°C to 150°C
DFN ................................................. – 65°C to 125°C
Lead Temperature (Soldering, 10 sec) (MSOP) .... 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
FB 1
ISN 2
ISP 3
IADJ 4
GND 5
10 VC
9 SHDN
11
8 VIN
7 SW
6 SW
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W
EXPOSED PAD (PIN 11) IS GND AND
MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
LT1618EDD
DD PART
MARKING
LAFQ
Consult LTC marketing for parts specified with wider operating temperature ranges.
FB 1
ISN 2
ISP 3
IADJ 4
GND 5
TOP VIEW
10 VC
9 SHDN
8 VIN
7 SW
6 NC
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 160°C/W
ORDER PART
NUMBER
LT1618EMS
MS PART
MARKING
LTNH
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 1.6V, VSHDN = 1.6V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Voltage
1.6
18
V
Quiescent Current
Reference Voltage
VSHDN = 1.6V, Not Switching
VSHDN = 0V
Measured at FB Pin
1.8
2.7
mA
0.1
1
µA
1.250 1.263 1.276
V
● 1.243 1.263 1.283
V
Reference Voltage Line Regulation
FB Pin Bias Current
Error Amplifier Voltage Gain
1.6V < VIN < 18V
VFB = 1.263V, VIN = 1.8V
0.01 0.03
%/V
●
±2
±12
nA
180
V/V
Error Amplifier Transconductance
Error Amplifier Sink Current
Error Amplifier Source Current
Current Sense Voltage (ISP, ISN)
ISP, ISN Pin Bias Currents (Note 3)
(ISP, ISN) Common Mode Minimum Voltage
∆IC = ± 5µA
VFB = 1.35V, VC = 1V
VFB = 1.10V, VC = 1V
VFB = 0V, VIADJ = 0V
VISP = 1.85V, VISN = 1.80V, VIADJ = 0V
160
µmho
15
µA
30
µA
● 47.5
50
52.5
mV
50
80
µA
1.8
V
Switching Frequency
Maximum Switch Duty Cycle
VFB = 1V
VFB = 0V
1.25
1.4
1.6
MHz
550
kHz
● 88
92
%
Switch Current Limit
(Note 4)
1.5
2.1
2.8
A
sn1618 1618fas
2
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