LT1308AIS8 Linear Technology, LT1308AIS8 Datasheet - Page 7
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LT1308AIS8
Manufacturer Part Number
LT1308AIS8
Description
IC CONV DC/DC STEP UP HC 8SOIC
Manufacturer
Linear Technology
Type
Step-Up (Boost)r
Datasheet
1.LT1308ACS8PBF.pdf
(20 pages)
Specifications of LT1308AIS8
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
1A
Frequency - Switching
600kHz
Voltage - Input
1 ~ 10 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1308AIS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1308AIS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1308AIS8#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
BLOCK DIAGRAMS
V
OUT
R1
(EXTERNAL)
R2
(EXTERNAL)
V
OUT
FB
R1
(EXTERNAL)
R2
(EXTERNAL)
FB
V
V
IN
IN
11
12
FB
2
V
FB
6
2
IN
Q1
R5
40k
Q1
R5
40k
Q2
×10
R6
40k
R3
30k
R4
140k
Figure 2b. LT1308A/LT1308B Block Diagram (TSSOP Package)
Figure 2a. LT1308A/LT1308B Block Diagram (SO-8 Package)
Q2
×10
V
R6
40k
R3
30k
R4
140k
IN
+
–
OSCILLATOR
GENERATOR
600kHz
RAMP
g
AMPLIFIER
V
m
IN
ERROR
+
–
OSCILLATOR
GENERATOR
600kHz
RAMP
g
AMPLIFIER
m
ERROR
*HYSTERESIS IN LT1308A ONLY
Q4
V
Σ
IN
*HYSTERESIS IN LT1308A ONLY
+
+
BIAS
Q4
V
V
Σ
1
IN
C
+
+
BIAS
V
+
–
–
+
1
C
COMPARATOR
*
+
–
–
+
A1
A2
2V
COMPARATOR
BE
*
A1
A2
2V
BE
ENABLE
200mV
R
ENABLE
FF
S
200mV
R
LBI
13
Q
FF
S
LT1308A/LT1308B
LBI
+
–
7
Q
SHUTDOWN
+
–
DRIVER
A = 3
A4
SHUTDOWN
+
–
DRIVER
A = 3
A4
+
–
SHDN
GND
LBO
SW
14
3
8
4
Q3
0.03Ω
GND
SHDN
SW
GND
LBO
5
SW
9
3
8
5
4
Q3
0.03Ω
GND
SW
10
6
1308 BD2a
GND
7
1308abfb
1308 BD2b
7