LTC1263IS8#TR Linear Technology, LTC1263IS8#TR Datasheet - Page 4

• Manufacturer Part Number: LTC1263IS8#TR
• Description: IC CONV DC/DC FLASHMEM 12V 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC1263IS8#TR

• Applications: Converter, Programming Supply
• Voltage - Input: 4.75 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: 12V
• 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

BLOCK
LTC1263
4
TIMING DIAGRAMS
W U
DIAGRAM
C1
C2
C1
C2
C1
C2
+
–
+
–
V
V
SHDN
S1 AND S2 SHOWN WITH SHDN PIN LOW. S3A, S3B, S3C, S3D, S4A, S4B AND S4C SHOWN CHARGING C1 AND C2
WITH OSCILLATOR OUTPUT LOW AND V
OPEN WHILE S4A, S4B AND S4C CLOSE TO CHARGE V
OUT
CHARGE PUMP
W
S4A
S3B
W
S3A
S4B
1.4V
C1 = 0.47 F
C2 = 0.47 F
t
OFF
S3C
S3D
S4C
CLK
5.1V
1
2
3
4
Figure 1. Timing Diagram
S1
DIV
Figure 2. Timing Circuit
C1
C1
C2
C2
–
+
–
+
< V
LTC1263
BGAP
– V
OUT
SHDN
HYST
V
GND
. COMPARATOR HYSTERESIS IS V
OUT
V
CC
. AT OSCILLATOR OUTPUT HIGH, S3A, S3B, S3C AND S3D
8
7
6
5
+
–
V
BGAP
C3 = 10 F
OSCILLATOR
REFERENCE
BANDGAP
4.75V TO 5.5V
1.4V
t
ON
V
CC
12V
C4 = 10 F
LTC1263 • F02
HYST
LTC1263 • F01
V
V
SHDN
OUT
V
V
V
0V
OUT
CC
CC
R1
R2
R3
S2
V
DIV
SHDN
V
GND
V
OUT
CC
LTC1263 • BD
C
C
IN
OUT