LT1576IS8-5 Linear Technology, LT1576IS8-5 Datasheet - Page 2

• Manufacturer Part Number: LT1576IS8-5
• Description: IC REG SW 5V 1.5A STEPDOWN 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1576IS8-5

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 1.5A
• Frequency - Switching: 200kHz
• Voltage - Input: 5 ~ 25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LT1576/LT1576-5
ABSOLUTE
(Note 1)
Input Voltage .......................................................... 25V
BOOST Pin Above Input Voltage ............................. 10V
SHDN Pin Voltage .................................................. 6.5V
BIAS Pin Voltage ...................................................... 7V
FB Pin Voltage (Adjustable Part) ............................ 3.5V
FB Pin Current (Adjustable Part) ............................ 1mA
SYNC Pin Voltage ..................................................... 7V
Operating Junction Temperature Range
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are T
PARAMETER
Feedback Voltage
Sense Voltage (Fixed 5V)
SENSE Pin Resistance
Reference Voltage Line Regulation
Feedback Input Bias Current
Error Amplifier Voltage Gain
Error Amplifier Transconductance
V
Error Amplifier Source Current
Error Amplifier Sink Current
V
V
Switch Current Limit
Slope Compensation (Note 9)
Switch On Resistance (Note 7)
Maximum Switch Duty Cycle
2
C
C
C
Pin to Switch Current Transconductance
Pin Switching Threshold
Pin High Clamp
LT1576C ............................................... 0 C to 125 C
LT1576I ........................................... – 40 C to 125 C
W
MAXIMUM
W W
A
, T
CONDITIONS
5V V
All Conditions
5V V
(Notes 2, 8)
V
V
Duty Cycle = 0
V
DC = 80%
I
V
J
SW
FB
FB
C
FB
I (V
RATINGS
= 25 C, V
Open, V
= 1V
= 1.4V
= 1.5A
= 1.1V
C
) = 10 A (Note 8)
IN
IN
FB
25V, V
25V
U
IN
= 1.1V, DC 50%
= 15V, V
OL
The
+ 0.2V V
C
denotes specifications which apply over the full operating temperature
= 1.5V, Boost = V
CC
PACKAGE/ORDER
*Default is the adjustable output voltage device with FB pin and shutdown
function. Option -5 replaces FB with SENSE pin for fixed 5V output
applications. -SYNC replaces SHDN with SYNC pin for applications
requiring synchronization. Consult factory for Military grade parts.
BOOST
V
GND
V
CONNECTED TO GROUND PLANE OR
LARGE LANDS
OH
V
SW
JA
IN
= 80 C/ W WITH FUSED GROUND PIN
– 0.2V
1
2
3
4
8-LEAD PLASTIC SO
S8 PACKAGE
IN
TOP VIEW
+ 5V, switch open, unless otherwise noted.
8
7
6
5
SHDN OR
SYNC*
FB OR SENSE*
V
BIAS
C
1.195
MIN
1.18
4.94
4.90
200
800
400
1.5
13
40
50
90
86
INFORMATION
U
ORDER PART NUMBER
LT1576CS8
LT1576CS8-SYNC
LT1576IS8
LT1576IS8-SYNC
LT1576CS8-5
LT1576CS8-5 SYNC
LT1576IS8-5
LT1576IS8-5 SYNC
S8 PART MARKING
1576
1576SN
1576I
576ISN
1050
1.21
18.5
0.01
TYP
400
110
130
5.0
0.5
1.5
0.8
2.1
0.3
0.2
94
94
2
W
1.225
1300
1700
MAX
1.24
5.06
5.10
0.03
3.50
0.35
0.45
190
200
26
2
15765
5765SN
1576I5
76I5SN
UNITS
U
Mho
Mho
%/V
A/ V
k
%
%
V
V
V
V
A
A
A
V
V
A
A