LTC1263
12V, 60mA Flash Memory
Programming Supply
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTION
The LTC
®
1263 is a regulated 12V, 60mA output DC/DC
converter. It provides the 12V
±5%
output necessary to
program double byte-wide flash memories. The output
provides 60mA from input voltages as low as 4.75V
without using any inductors. Only four external capacitors
are required to complete an extremely small, surface
mountable circuit. The output can be momentarily shorted
to ground without damaging the part.
The active high TTL compatible Shutdown pin can be
directly connected to a microprocessor. In the shutdown
mode, the supply current typically drops to 0.5µA.
The LTC1263 is available in an 8-pin SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Guaranteed 60mA Output
Regulated 12V
±
5% Output Voltage
No Inductors
Supply Voltage Range: 4.75V to 5.5V
I
CC
0.5µA Typ in Shutdown
Low Power: I
CC
= 300µA
8-Pin SO Package
Same Pinout as LTC1262 and MAX662
APPLICATIONS
s
s
s
12V Flash Memory Programming Supplies
Compact 12V Op Amp Supplies
Battery-Powered Systems
TYPICAL APPLICATION
Flash Memory Programming Supply
V
CC
4.75V TO 5.5V
13.0
12.8
12.6
OUTPUT VOLTAGE (V)
10µF
SHDN
C1
–
0.47µF
C1
+
12.4
12.2
12.0
11.8
11.6
11.4
11.2
V
CC
SHDN
ON
µP
LTC1263
C2
–
0.47µF
C2
+
V
OUT
GND
12V
5V
FLASH
MEMORY
VPP
10µF
LTC1263 • TA01
11.0
0
20
40
60
80
LOAD CURRENT (mA)
100
LTC1263 • TA02
U
U
U
Output Voltage vs Load
1
LINER [ LINEAR TECHNOLOGY ]
