900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LT1076-5 Datasheet

5V Step-Down Switching Regulator

No Preview Available !

FEATURES
s Fixed 5V Output
s 2A On-Board Switch
s 100kHz Switching Frequency
s 2% Output Voltage Tolerance Over Temperature
s Greatly Improved Dynamic Behavior
s Available in Low Cost 5-Lead Package
s Only 9.5mA Quiescent Current
s Operates Up to 60V Input
APPLICATI S
s 5V Output Buck Converter
s Tapped Inductor Buck Converter with 4A Output
at 5V
s Positive-to-Negative Converter
LT1076-5
5V Step-Down
Switching Regulator
DESCRIPTIO
The LT1076-5 is a 2A fixed 5V output monolithic bipolar
switching regulator which requires only a few external
parts for normal operation. The power switch, all oscillator
and control circuitry, all current limit components, and an
output monitor are included on the chip. The topology is
a classic positive “buck” configuration but several design
innovations allow this device to be used as a positive-to-
negative converter, a negative boost converter, and as a
flyback converter. The switch output is specified to swing
40V below ground, allowing the LT1076-5 to drive a
tapped inductor in the buck mode with output currents up
to 4A.
The LT1076-5 uses a true analog multiplier in the feedback
loop. This makes the device respond nearly instanta-
neously to input voltage fluctuations and makes loop gain
independent of input voltage. As a result, dynamic behav-
ior of the regulator is significantly improved over previous
designs.
On-chip pulse by pulse current limiting makes the LT1076-
5 nearly bust-proof for output overloads or shorts. The
input voltage range as a buck converter is 8V to 60V, but
a self-boot feature allows input voltages as low as 5V in the
inverting and boost configurations.
The LT1076-5 is available in a low cost 5-lead TO-220
package with frequency pre-set at 100kHz and current
limit at 2.6A. See Application Note 44 for design details.
TYPICAL APPLICATI
Basic Positive Buck Converter
8V TO 40V
+
VIN VSW
LT1076-5
GND
C3
200µF
SENSE
VC
R3
1.5k
C2
0.033µF
100µH**
MBR340*
5V
1.8A
* MBR330P MAY BE USED
FOR VIN 25V
** COILTRONICS #100-1-52
HURRICANE #HL-AG210LL
+ C1
500µF
25V
VALUE MAY BE REDUCED TO 50µH
FOR OUTPUT LOADS BELOW 1.5A
LT1076-5 TA01
1


Linear Technology Electronic Components Datasheet

LT1076-5 Datasheet

5V Step-Down Switching Regulator

No Preview Available !

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
(VSW 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
TJMAX = 110°C
SHDN
VC
SENSE
GND
ILIM
VSW
VIN
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
VIN
VSW
GND
VC
SENSE
T PACKAGE
5-LEAD TO-220
FOR STRAIGHT LEADS, ORDER FLOW 06
TJMAX = 110°C, θJA = 130°C/W
FRONT VIEW
7
6
5
4
3
2
1
Y PACKAGE
7-LEAD TO-220
TJMAX = 110°C, θJA = 130°C/W
SHDN
VC
SENSE
GND
ILIM
VSW
VIN
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1076CR-5
LT1076CT-5
LT1076HVCT-5
LT1076IT-5
LT1076HVIT-5
LT1076CY-5
ELECTRICAL CHARACTERISTICS TJ = 25°C, VIN = 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
ISW = 0.5A
ISW = 2A
VIN = 25V, VSW = 0
VIN = VMAX, VSW = 0 (Note 6)
VOUT = 5.5V, VIN 40V
40V < VIN < 60V
VSHDN = 0.1V (Device Shutdown) (Note 8)
Normal Mode
Start-Up Mode (Note 3)
ILIM = Open
RLIM = 10k (Note 9)
RLIM = 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


Part Number LT1076-5
Description 5V Step-Down Switching Regulator
Maker Linear Technology
Total Page 4 Pages
PDF Download

LT1076-5 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 LT1076-5 5V Step-Down Switching Regulator
Linear Technology





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy