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LTC1262
12V, 30mA Flash Memory
Programming Supply
S
F
EA
T
U
RE
D
U
ESCRIPTIO
U
A
O
PP
L
IC
AT
ITY
P
I
CA
L
■
Regulated 12V ±5% Output Voltage
■
No Inductors
■
Supply Voltage Range: 4.75V to 5.5V
■
Guaranteed 30mA Output
■
Low Power: I
CC
= 500
µ
A
■
I
CC
in Shutdown: 0.5µA
■
8-Pin PDIP or SO-8 Package
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.
1
2
3
4
8
7
6
5
0.22µF
4.7µF
FROM MPU
4.7µF
V
CC
VPP
LTC1262 • TA01
V
CC
4.75V TO 5.5V
FLASH
MEMORY
0.22µF
C1
–
C1
+
C2
–
C2
+
SHDN
GND
V
OUT
V
CC
LTC1262
+
+
U
S
A
O
PP
L
IC
AT
I
■
12V Flash Memory Programming Supplies
■
Compact 12V Op Amp Supplies
■
Battery-Powered Systems
5V
0V
SHDN
5V/DIV
5V
0V
12V
V
OUT
5V/DIV
1ms/DIV
1262 TA01a
In/Out of Shutdown
, LTC and LT are registered trademarks of Linear Technology Corporation.
