LTC1262CN8 Linear Technology, LTC1262CN8 Datasheet

IC DC/DC CONV FLASH MEM 12V 8DIP

LTC1262CN8

Manufacturer Part Number
LTC1262CN8
Description
IC DC/DC CONV FLASH MEM 12V 8DIP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1262CN8

Applications
Converter, Programming Supply
Voltage - Input
4.75 ~ 5.5 V
Number Of Outputs
1
Voltage - Output
12V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1262CN8
Manufacturer:
LT
Quantity:
5 510
Part Number:
LTC1262CN8
Manufacturer:
RAYTHEON
Quantity:
5 510
FEATURE
A
0.22 F
0.22 F
TYPICAL
PPLICATI
Regulated 12V 5% Output Voltage
No Inductors
Supply Voltage Range: 4.75V to 5.5V
Guaranteed 30mA Output
Low Power: I
I
8-Pin PDIP or SO-8 Package
12V Flash Memory Programming Supplies
Compact 12V Op Amp Supplies
Battery-Powered Systems
CC
in Shutdown: 0.5 A
1
2
3
4
C1
C1
C2
C2
+
+
A
S
LTC1262
CC
O
PPLICATI
= 500 A
U
SHDN
V
GND
OUT
V
S
CC
8
7
6
5
FROM MPU
+
O
4.7 F
4.75V TO 5.5V
U
+
V
CC
4.7 F
VPP
V
CC
MEMORY
FLASH
LTC1262 • TA01
D
The LTC
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 0.5 A. 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.
ESCRIPTIO
12V, 30mA Flash Memory
®
5V/DIV
5V/DIV
1262 is a regulated 12V, 30mA output DC/DC
SHDN
V
OUT
12V
Programming Supply
5V
0V
5V
0V
U
In/Out of Shutdown
1ms/DIV
LTC1262
1262 TA01a
1

Related parts for LTC1262CN8

LTC1262CN8 Summary of contents

Page 1

... A. 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. FLASH MEMORY 5V/DIV VPP 4.7 F ...

Page 2

... Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 3: All typicals are given ORDER PART TOP VIEW NUMBER 8 SHDN LTC1262CN8 7 GND LTC1262CS8 6 V OUT LTC1262IS8 PACKAGE ...

Page 3

W U TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Output Current 4.75V 5. OUTPUT CURRENT (mA) Supply Current vs Supply Voltage 600 ...

Page 4

LTC1262 W BLOCK DIAGRAM S3A + C1 S4A C1 – C1 S3B + C2 S4B C2 – C2 CHARGE PUMP S1 AND S2 SHOWN WITH SHDN PIN LOW. S3A, S3B, S3C, S3D, S4A AND S4B SHOWN WITH OSCILLATOR OUTPUT LOW ...

Page 5

U U APPLICATIONS INFORMATION Operation The LTC1262 uses a charge pump tripler to generate 12V from 5V. The charge pump operates when clocked 300kHz oscillator. When the oscillator output is low, C1 and C2 ...

Page 6

... Q3 U1 Si9410 Q2 VN7002 1 PDRIVE R2 100 8 + SENSE C3 R3 1000pF 100 7 – SENSE 14 Q5 NDRIVE Si9410 12 PGND R6 TM 22k Burst Mode DEFEAT; USE IF REQUIRED Burst Mode is a trademark of Linear Technology Corporation 220 PANASONIC Si9410 R4 ECGCOKB220R L2 0.01 3 H/10A 2W V OUT 3.3V 10A + + C5 330 F 6.3V 2 ...

Page 7

... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 8

... PCMCIA Card Power Control Small SMT SHDN Components, Requires External Inductor Three-Lead Z Package, Requires External Inductor Requires External Inductor SMT Inductor and Capacitors SHDN Small SMT Inductor and Capacitors SHDN LT/TP 0298 REV A 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1994 CC ...

Related keywords