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TL497AI Datasheet(PDF) 2 Page - Texas Instruments

Part # TL497AI
Description  SWITCHING VOLTAGE REGULATORS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TL497AI Datasheet(HTML) 2 Page - Texas Instruments

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TL497AC, TL497AI, TL497AY
SWITCHING VOLTAGE REGULATORS
SLVS009C – JUNE 1976 – REVISED AUGUST 1995
4–2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
Simplicity of design is a primary feature of the TL497AC and TL497AI. With only six external components (three
resistors, two capacitors, and one inductor), the TL497AC and TL497AI operates in numerous voltage
conversion applications (step-up, step-down, invert) with as much as 85% of the source power delivered to the
load. The TL497AC and TL497AI replace the TL497 in all applications.
The TL497AC is characterized for operation from 0
°C to 70°C, and the TL497AI is characterized for operation
from – 40
°C to 85°C.
functional block diagram
BASE†
11
12
BASE DRIVE†
CUR LIM SENS
FREQ CONTROL
INHIBIT
SUBSTRATE
COMP INPUT
CATHODE
Current
Limit
Sense
13
3
2
1
4
6
1.2-V
Reference
10
8
7
COL OUT
EMIT OUT
ANODE
Oscillator
† BASE and BASE DRIVE are used for device testing only. They are not normally used in circuit applications of the device.


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