LTC1263_15 Datasheet, PDF (1/8 Pages) Linear Technology – 12V, 60mA Flash Memory Programming Supply

LTC1263
12V, 60mA Flash Memory
Programming Supply
FEATURES
s _{Guaranteed 60mA Output}
s _{Regulated 12V ±5% Output Voltage}
s _{No Inductors}
s _{Supply Voltage Range: 4.75V to 5.5V}
s _{ICC 0.5µA Typ in Shutdown}
s _{Low Power: ICC = 300µA}
s _{8-Pin SO Package}
s _{Same Pinout as LTC1262 and MAX662}
U
APPLICATIONS
s _{12V Flash Memory Programming Supplies}
s _{Compact 12V Op Amp Supplies}
s _{Battery-Powered Systems}
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.
TYPICAL APPLICATION
Flash Memory Programming Supply
V_CC
4.75V TO 5.5V
0.47µF
0.47µF
10µF
C1^–
V_{CC SHDN} ON
SHDN
µP
C1⁺
LTC1263
12V
C2^–
V_OUT
5V
C2⁺ _GND
10µF
FLASH
MEMORY
VPP
LTC1263 • TA01
Output Voltage vs Load
13.0
12.8
12.6
12.4
12.2
12.0
11.8
11.6
11.4
11.2
11.0
0
20 40 60 80 100
LOAD CURRENT (mA)
LTC1263 • TA02
1