LT1107 Datasheet, PDF (2/12 Pages) Linear Technology – Micropower DC/DC Converter Adjustable and Fixed 5V, 12V

LT1107
ABSOLUTE AXI U RATI GS
Supply Voltage (V_IN) ............................................... 36V
SW1 Pin Voltage (V_SW1) ......................................... 50V
SW2 Pin Voltage (V_SW2) ............................ – 0.5V to V_IN
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
PACKAGE/ORDER I FOR ATIO
TOP VIEW
I_LIM 1
V_IN 2
SW1 3
SW2 4
8 FB (SENSE)*
7 SET
6 AO
5 GND
J8 PACKAGE
N8 PACKAGE
8-LEAD CERAMIC DIP 8-LEAD PLASTIC DIP
* FIXED VERSIONS
T_JMAX = 150°C, θ_JA = 120°C/W (J)
T_JMAX = 90°C, θ_JA = 130°C/W (N)
ORDER PART
NUMBER
LT1107CN8
LT1107CN8-5
LT1107CN8-12
LT1107MJ8
LT1107MJ8-5
LT1107MJ8-12
TOP VIEW
I_LIM 1
V_IN 2
SW1 ₃
SW2 ₄
8 FB(SENSE)*
7 SET
6 AO
5 GND
S8 PACKAGE
8-LEAD PLASTIC SO
*FIXED VERSIONS
T_JMAX = 90°C, θ_JA = 150°C/W
ORDER PART
NUMBER
LT1107CS8
LT1107CS8-5
LT1107CS8-12
S8 PART MARKING
1107
11075
110712
ELECTRICAL CHARACTERISTICS
V_IN = 3V, military or commercial version, T_A = 25°C, unless otherwise noted.
SYMBOL
I_Q
PARAMETER
Quiescent Current
Quiescent Current, Step-Up Mode Configuration
V_IN
Input Voltage
Comparator Trip Point Voltage
V_OUT
Output Sense Voltage
Comparator Hysteresis
Output Hysteresis
f_OSC
Oscillator Frequency
Duty Cycle, Step-Up Mode
t_ON
Switch ON Time, Step-Up Mode
Feedback Pin Bias Current
Set Pin Bias Current
V_OL
Gain Block Output Low
Reference Line Regulation
CONDITIONS
MIN TYP MAX
Switch OFF
320 450
No Load
LT1107-5
360
LT1107-12
550
Step-Up Mode
Step-Down Mode
q
2
12.6
q
30.0
LT1107 (Note 1)
q 1.2 1.25 1.3
LT1107-5 (Note 2)
LT1107-12 (Note 2)
q 4.75 5
5.25
q 11.40 12 12.60
LT1107
q
8 12.5
LT1107-5
LT1107-12
q
32
50
q
75 120
50
63
77
Full Load
64
70
76
I_LIM Tied to V_IN
LT1107, V_FB = 0V
V_SET = V_REF
I_SINK = 300µA, V_SET = 1V
5V ≤ V_IN ≤ 30V
8.8
11 12.7
q
70 120
q
70 300
q
0.15 0.4
q
0.02 0.075
UNITS
µA
µA
µA
V
V
V
V
V
mV
mV
mV
kHz
%
µs
nA
nA
V
%/V
2