LT1302-5 Linear Technology, LT1302-5 Datasheet - Page 2

• Manufacturer Part Number: LT1302-5
• Description: Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters
• Manufacturer: Linear Technology

D
A
LT1302/LT1302-5
V
SW Voltage ............................................................. 25V
FB Voltage .............................................................. 10V
SHDN Voltage ......................................................... 10V
V
I
Maximum Power Dissipation ............................ 700mW
Operating Temperature Range .................... 0 C to 70 C
Storage Temperature Range ............... – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
SYMBOL
I
V
V
V
DC
t
t
V
V
V
I
The
temperature range.
Note 1: Hysteresis is specified at DC. Output ripple depends on capacitor
size and ESR.
2
Q
ON
OFF
SHDN
T
IN
FB
OS
CESAT
SHDNH
SHDNL
IN
C
BSOLUTE
Voltage .................................................................. 4V
C
Voltage ................................................................ 4V
Voltage ............................................................. 10V
denotes specifications which apply over the 0 C to 70 C
ELECTRICAL C
PARAMETER
Quiescent Current
Input Voltage Range
Feedback Voltage (LT1302)
Feedback Pin Bias Current (LT1302)
Output Sense Voltage (LT1302-5)
Output Ripple Voltage (LT1302-5)
Sense Pin Resistance to Ground (LT1302-5)
Offset Voltage
Comparator Hysteresis
Oscillator Frequency
Maximum Duty Cycle
Switch On Time
Switch Off Time
Output Line Regulation
Switch Saturation Voltage
Switch Leakage Current
Switch Current Limit
Error Amplifier Voltage Gain
Shutdown Pin High
Shutdown Pin Low
Shutdown Pin Bias Current
I
T
Pin Resistance to Ground
W
A
XI
W
HARA TERISTICS
U
W
C
R
A
TI
U
G
CONDITIONS
V
V
V
V
V
V
See Block Diagram
(Note 1)
Current Limit Not Asserted (Note 2)
Current Limit Not Asserted
2 < V
I
V
V
V
0.9V V
V
V
V
SW
SHDN
SHDN
C
FB
C
C
SW
C
C
SHDN
SHDN
SHDN
S
= 0.4V (Burst Mode Operation)
= 1.25V (Full Power) (Note 3)
= 0.4V
= 0.4V
= 0.4V
= 1V
= 2A
= 5V, Switch Off
IN
= 0.5V, V
= 1.8V
= 5V
= 2V
= 0V
< 8V
C
T
A
1.2V, V
= 25 C, V
Note 2: The LT1302 operates in a variable frequency mode. Switching
frequency depends on load inductance and operating conditions and may
be above specified limits.
Note 3: Minimum switch current 100% tested. Maximum switch current
guaranteed by design.
PACKAGE/ORDER I FOR ATIO
Consult factory for Industrial and Military grade parts.
FB
(SENSE*)FB
= 1.3V
C
/ V
SHDN
N8 PACKAGE
8-LEAD PDIP
GND
IN
T
T
PINS 1 AND 8 ARE INTERNALLY
V
FB
CONNECTED IN SOIC PACKAGE
JMAX
JMAX
C
= 2.5V, unless otherwise noted.
1
2
3
4
= 125 C,
= 125 C,
*FIXED VERSION
TOP VIEW
JA
JA
= 100 C/W (N8)
= 80 C/W (S8)
8-LEAD PLASTIC SO
S8 PACKAGE
8
7
6
5
PGND
SW
V
I
T
1.22
4.85
MIN
IN
175
160
2.0
2.2
2.0
1.8
75
50
U
1.24
5.05
0.06
TYP
200
100
420
220
310
3.9
0.7
0.1
2.8
0.1
3.9
15
50
15
86
75
S8 PART MARKING
5
8
1
3
ORDER PART
LT1302CN8
LT1302CS8
LT1302CN8-5
LT1302CS8-5
NUMBER
W
MAX
1302
13025
1.26
5.25
0.15
300
265
310
400
475
3.9
0.5
25
95
10
20
8
1
UNITS
U
%/V
kHZ
kHz
V/ V
mV
mV
mV
mV
mV
k
k
nA
%
A
A
V
V
V
V
A
A
A
V
V
A
A
A
s
s