LTC1262
LTC1262 is 12V/ 30mA Flash Memory Programming Supply manufactured by Linear Technology.
FEATURES s s s s s s s
DESCRIPTIO
Regulated 12V ± 5% Output Voltage No Inductors Supply Voltage Range: 4.75V to 5.5V Guaranteed 30m A Output Low Power: ICC = 500µA ICC in Shutdown: 0.5µA 8-Pin PDIP or SO-8 Package
The LTC®1262 is a regulated 12V, 30m A 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 30m A from input voltages as low as 4.75V without using any inductors. Only four external capacitors are required to plete an extremely small surface mountable circuit. The TTL patible shutdown pin can be directly connected to a microprocessor and reduces the supply current to less than 0.5µA. The LTC1262 offers improved shutdown current performance and requires fewer external ponents than peting solutions. The LTC1262 is available in an 8-pin PDIP or SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI s s s
12V Flash Memory Programming Supplies pact 12V Op Amp Supplies Battery-Powered Systems
TYPICAL APPLICATI
1 0.22µF 2 3 0.22µF 4
C1- C1+
SHDN GND LTC1262 VOUT VCC
8 7 6 5
FROM MPU FLASH MEMORY VPP 4.7µF VCC VCC 4.75V TO 5.5V
- TA01
+
4.7µF
SHDN 5V 5V/DIV 0V
C2
- C2+
+
12V VOUT 5V/DIV 5V 0V 1ms/DIV
1262 TA01a
In/Out of Shutdown
LTC1262 ABSOLUTE
(Note 1)
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW C1- 1 C1+ 2 C2
- Supply Voltage (VCC) 6V Input Voltage (SHDN)
- 0.3V to V CC + 0.3V Output Current (IOUT) 50m A Operating Temperature Range LTC1262C 0°C to 70°C LTC1262I
- 40°C to 85°C Storage Temperature Range
- 65°C to 150°C Lead Temperature (Soldering, 10 sec) 300°C
ORDER PART NUMBER
8 7 6 5 SHDN GND VOUT...
