LT1076-5 Datasheet, PDF (2/4 Pages) Linear Technology – 5V Step-Down Switching Regulator

LT1076-5
ABSOLUTE AXI U RATI GS
Input Voltage
LT1076-5............................................................ 45V
LT1076HV-5 ....................................................... 64V
Switch Voltage with Respect to Input Voltage
LT1076-5............................................................ 64V
LT1076HV-5 ....................................................... 75V
Switch Voltage with Respect to Ground Pin
(V_SW Negative)
LT1076-5 (Note 5).............................................. 35V
LT1076HV-5 (Note 5) ......................................... 45V
Sense Pin Voltage ........................................... – 2V, 10V
Maximum Operating Ambient Temperature Range
LT1076C-5, LT1076HVC-5 ..................... 0°C to 70°C
LT1076I-5, LT1076HVI-5 .................. – 40°C to 85°C
Maximum Operating Junction Temperature Range
LT1076C-5, LT1076HVC-5 ................... 0°C to 125°C
LT1076I-5, LT1076HVI-5 ................ – 40°C to 125°C
Maximum Storage Temperature .......... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER I FOR ATIO
FRONT VIEW
7
6
5
4
3
2
1
R PACKAGE
7-LEAD PLASTIC DD
T_JMAX = 110°C
SHDN
V_C
SENSE
GND
I_LIM
V_SW
V_IN
θ WILL VARY FROM APPROXIMATELY 30°C/W WITH
2.8IN² OF 1 OZ COPPER TO 70°C/W WITH 0.20IN² OF
1 OZ COPPER.
FRONT VIEW
5
4
3
2
1
V_IN
V_SW
GND
V_C
SENSE
T PACKAGE
5-LEAD TO-220
FOR STRAIGHT LEADS, ORDER FLOW 06
T_JMAX = 110°C, θ_JA = 130°C/W
FRONT VIEW
7
6
5
4
3
2
1
Y PACKAGE
7-LEAD TO-220
T_JMAX = 110°C, θ_JA = 130°C/W
SHDN
V_C
SENSE
GND
I_LIM
V_SW
V_IN
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1076CR-5
LT1076CT-5
LT1076HVCT-5
LT1076IT-5
LT1076HVIT-5
LT1076CY-5
ELECTRICAL CHARACTERISTICS T_J = 25°C, V_IN = 25V, unless otherwise noted.
PARAMETER
Switch “On” Voltage (Note 1)
Switch “Off” Leakage
Supply Current (Note 2)
Minimum Supply Voltage
Switch Current Limit (Note 4)
Maximum Duty Cycle
CONDITIONS
I_SW = 0.5A
I_SW = 2A
V_IN = 25V, V_SW = 0
V_IN = V_MAX, V_SW = 0 (Note 6)
V_OUT = 5.5V, V_IN ≤ 40V
40V < V_IN < 60V
V_SHDN = 0.1V (Device Shutdown) (Note 8)
Normal Mode
Start-Up Mode (Note 3)
I_LIM = Open
R_LIM = 10k (Note 9)
R_LIM = 7k (Note 9)
MIN TYP MAX
q
1.2
q
1.7
150
250
q
8.5 11
q
9.0 12
140 300
q
7.3 8.0
q
3.5 4.8
q
2 2.6 3.2
1.8
1.2
q
85
90
UNITS
V
V
µA
µA
mA
mA
µA
V
V
A
A
A
%
2