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LT1107 Datasheet(PDF) 2 Page - Linear Technology

Part No. LT1107
Description  Micropower DC/DC Converter Adjustable and Fixed 5V, 12V
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT1107 Datasheet(HTML) 2 Page - Linear Technology

 
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LT1107
A
G
A
U
A
R
BSOLUTEXI
TI
S
Supply Voltage (VIN) ............................................... 36V
SW1 Pin Voltage (VSW1) ......................................... 50V
SW2 Pin Voltage (VSW2) ............................ – 0.5V to VIN
Feedback Pin Voltage (LT1107) ................................ 5V
Sense Pin Voltage (LT1107-5, LT1107-12) ............ 36V
Maximum Power Dissipation ............................ 500mW
Set Pin Voltage ...................................................... 5.5V
Maximum Switch Current ...................................... 1.5A
Operating Temperature Range
LT1107C ................................................ 0
°C to 70°C
LT1107M ........................................ – 55
°C to 125°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300
°C
ELECTRICAL C
C
HARA TERISTICS
VIN = 3V, military or commercial version, TA = 25°C, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
Switch OFF
320
450
µA
Quiescent Current, Step-Up Mode Configuration
No Load
LT1107-5
360
µA
LT1107-12
550
µA
VIN
Input Voltage
Step-Up Mode
q
2
12.6
V
Step-Down Mode
q
30.0
V
Comparator Trip Point Voltage
LT1107 (Note 1)
q
1.2
1.25
1.3
V
VOUT
Output Sense Voltage
LT1107-5 (Note 2)
q
4.75
5
5.25
V
LT1107-12 (Note 2)
q
11.40
12
12.60
V
Comparator Hysteresis
LT1107
q
8
12.5
mV
Output Hysteresis
LT1107-5
q
32
50
mV
LT1107-12
q
75
120
mV
fOSC
Oscillator Frequency
50
63
77
kHz
Duty Cycle, Step-Up Mode
Full Load
64
70
76
%
tON
Switch ON Time, Step-Up Mode
ILIM Tied to VIN
8.8
11
12.7
µs
Feedback Pin Bias Current
LT1107, VFB = 0V
q
70
120
nA
Set Pin Bias Current
VSET = VREF
q
70
300
nA
VOL
Gain Block Output Low
ISINK = 300µA, VSET = 1V
q
0.15
0.4
V
Reference Line Regulation
5V
≤ VIN ≤ 30V
q
0.02
0.075
%/V
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1107CN8
LT1107CN8-5
LT1107CN8-12
LT1107MJ8
LT1107MJ8-5
LT1107MJ8-12
LT1107CS8
LT1107CS8-5
LT1107CS8-12
TJMAX = 150°C, θJA = 120°C/W (J)
TJMAX = 90°C, θJA = 130°C/W (N)
TJMAX = 90°C, θJA = 150°C/W
1107
11075
110712
S8 PART MARKING
1
2
3
4
8
7
6
5
TOP VIEW
ILIM
VIN
SW1
SW2
FB (SENSE)*
SET
AO
GND
J8 PACKAGE
8-LEAD CERAMIC DIP
N8 PACKAGE
8-LEAD PLASTIC DIP
* FIXED VERSIONS
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
*FIXED VERSIONS
ILIM
VIN
SW1
SW2
FB(SENSE)*
SET
AO
GND


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