Edition 08.97

This edition was realized using the software system FrameMaker

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Siemens AG 08.1997.

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PEB 2023
PEF 2023
Revision History:

Original Version:

Data Sheet 08.97

Previous Releases:

Data Sheet 02.97

Page

Subjects (changes since last revision)

all Pages

Additional to the normal temperature range devices PEB 2023 also the extended
temperature range devices PEF 2023 are specified in this Data Sheet.

The ambient temperature under bias is separately defined for PEB 2023 and PEF
2023.

The maximum limit values for line regulation

REF Line

and load regulation

REF Load

are reduced. The typical values are adapted.

The maximum limit value for voltage stability of

OSC

is reduced. The typical value is

adapted.

The test condition ambient temperature range

is extended for temperature

stability of

REF

and

OSC

The sense voltage

Sense

of the current limit comperator is separately defined for

PEB 2023 and PEF 2023.

PEB 2023

PEF 2023

Table of Contents

Page

Semiconductor Group

08.97

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Surge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.7 Fast Input Undervoltage Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.3 Static Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Package Outlines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Semiconductor Group

08.97

PEB 2023

PEF 2023

Overview

The PEB/F 2023 is a pulse width modulator circuit designed for fixed-frequency
switching regulators with very low power consumption.

In telephone and ISDN-systems a high conversion yield is crucial to maintain
functionality in all supply conditions via S- or U-interfaces. The PEB/F 2023 design and
technology realizes high conversion efficiency and low power dissipation. The PEB/F
2023 is fully compatible with the ITU-power recommendations of the S-interface. For
these reasons the PEB/F 2023 is especially suited for telephone and ISDN-
environments.

Coupled with a few external components it can provide a stable 5V DC-supply for
subscriber terminals (TE's) or network terminators (NT's). It can additionally be
programmed for higher output voltages, e.g. to supply the S-lines.

It should be recognized that the PEB/F 2023 can also be used in numerous DC/DC-
conversion systems other than ISDN-power supplies. For example, in a special supply
voltage range the PEB/F 2023 can be supplied from a 12V battery.

For detailed technical information about "Processing Guidelines" and
"Quality Assurance" for ICs, see our "Product Overview".

P-DSO-14

Semiconductor Group

08.97

ISDN DC Converter Circuit
IDCC

PEB 2023

PEF 2023

Data Sheet

SPT 75 R

Type

Ordering Code

Package

PEB 2023

Q67100-H6830

P-DSO-14

PEF 2023

Q67220-H1059

P-DSO-14

1.1

Features

· Switched Mode DC/DC Converter
· ITU ISDN Compatible
· Low Power Dissipation
· Supply Voltage Range 0: 8V to 16V

Supply Voltage Range 1: 12V to 80V
Supply Voltage Range 2: 22V to 90V
(pin striping selects between range 1 and range 2)
Supply Voltage Range 3, with shifting by an external zener diode: U

+8V to U

+90V

(minimum zener voltage U

= 14V)

· Programmable Overcurrent Protection
· Soft Start
· Power Housekeeping Input
· Input Undervoltage Detection
· High Input Impedance (<10

A) During Undervoltage Condition

· Oscillator Synchronization Input/Output
· High Voltage Smart Power Technology 75V
· P-DSO-14/1 Package

Part Number PEB2023