LT1683 データシートの表示（PDF） - Linear Technology
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LT1683 Datasheet PDF : 26 Pages
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LT1683
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (VIN)..................................................20V
Gate Drive Current...................................... Internal Limit
V5 Current................................................... Internal Limit
SHDN Pin Voltage......................................................20V
Feedback Pin Voltage (Trans. 10ms) ....................... ±10V
Feedback Pin Current .............................................10mA
Negative Feedback Pin Voltage (Trans. 10ms) .......... ±10V
CS Pin............................................................................5V
GCL Pin........................................................................16V
SS Pin............................................................................3V
Operating Junction Temperature Range
(Note 3)...................................................– 40°C to 125°C
Storage Temperature Range....................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
TOP VIEW
GATE A 1
CAP A 2
GCL 3
CS 4
V5 5
SYNC 6
CT 7
RT 8
FB 9
NFB 10
20 PGND
19 GATE B
18 CAP B
17 VIN
16 RVSL
15 RCSL
14 SHDN
13 SS
12 VC
11 GND
G PACKAGE
20-LEAD PLASTIC SSOP
TJMAX = 150°C, θJA = 110°C/ W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT1683EG#PBF
LT1683EG#TRPBF
1683
20-Lead Plastic SSOP
– 40°C to 125°C
LT1683IG#PBF
LT1683IG#TRPBF
1683
20-Lead Plastic SSOP
– 40°C to 125°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT1683EG
LT1683EG#TR
1683
20-Lead Plastic SSOP
– 40°C to 125°C
LT1683IG
LT1683IG#TR
1683
20-Lead Plastic SSOP
– 40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VC = 0.9V, VFB = VREF, RVSL, RCSL = 16.9k, RT = 16.9k and
other pins open unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Error Amplifiers
VREF
IFB
FBREG
VNFR
Reference Voltage
Feedback Input Current
Reference Voltage Line Regulation
Negative Feedback Reference Voltage
Measured at Feedback Pin
l 1.235 1.250 1.265
V
VFB = VREF
l
250 1000
nA
2.7V ≤ VIN ≤ 20V
l
0.012 0.03
%/V
Measured at Negative Feedback Pin l – 2.56 – 2.500 – 2.45
V
with Feedback Pin Open
INFR
NFBREG
gm
Negative Feedback Input Current
Negative Feedback Reference Voltage Line Regulation
Error Amplifier Transconductance
VNFB = VNFR
2.7V ≤ VIN ≤ 20V
∆IC = ±50µA
– 37 – 25
l
0.009 0.03
1100 1500 2200
l 700
2500
µA
%/V
µmho
µmho
1683fd
2
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