LT1308BCS8#TRPBF Linear Technology, LT1308BCS8#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LT1308BCS8#TRPBF
• Description: IC DC/DC CONV SINGLE CELL 8-SOIC
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LT1308BCS8#TRPBF

• 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: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

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