LTC1262 Datasheet, PDF (1/8 Pages) Linear Technology – 12V, 30mA Flash Memory Programming Supply

LTC1262
12V, 30mA Flash Memory
Programming Supply
FEATURES
s _{Regulated 12V ±5% Output Voltage}
s _{No Inductors}
s _{Supply Voltage Range: 4.75V to 5.5V}
s _{Guaranteed 30mA Output}
s _{Low Power: ICC = 500µA}
s _{ICC in Shutdown: 0.5µA}
s _{8-Pin PDIP or SO-8 Package}
APPLICATI S
s _{12V Flash Memory Programming Supplies}
s _{Compact 12V Op Amp Supplies}
s _{Battery-Powered Systems}
DESCRIPTIO
The LTC^®1262 is a regulated 12V, 30mA output DC/DC
converter. It is designed to provide the 12V ±5% output
necessary to program byte-wide flash memories. The
output will provide up to 30mA 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 TTL compatible shutdown pin can be directly con-
nected to a microprocessor and reduces the supply cur-
rent to less than 0.5µA. The LTC1262 offers improved
shutdown current performance and requires fewer exter-
nal components than competing solutions.
The LTC1262 is available in an 8-pin PDIP or SO-8
package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATI
0.22µF
0.22µF
1 _C1–
SHDN ⁸ FROM MPU
2 _C1+
GND ⁷
LTC1262
+
3 _C2–
V_OUT ⁶
4 _C2+
V_CC ⁵
4.7µF
+ ^4.7µF
V_CC
4.75V TO 5.5V
FLASH
MEMORY
VPP
V_CC
LTC1262 • TA01
In/Out of Shutdown
SHDN ^5V
5V/DIV _0V
12V
V_OUT
5V/DIV 5V
0V
1ms/DIV
1262 TA01a
1