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APPLICATIONS

P0021-02

PWP HTSSOP PACKAGE

(TOP VIEW)

SCR1

Cboot2

Cboot1

V

L1

PGND

L2

V

5

A

driver

OUT

Vg

IN

SCR0

5Vg_ENABLE

ENABLE

V

GND

R

REST

A

RESET

CLP

logic

mod

OUT

20

19

18

17

16

15

14

13

12

11

1

2

3

4

5

6

7

8

9

10

DESCRIPTION

TPIC74100-Q1

BUCK/BOOST SWITCH-MODE REGULATOR

SLIS125 – DECEMBER 2006

• Switched 5-V Regulated Output on 5Vg With

Current Limit

• Switch-Mode Regulator

• Programmable Slew Rate and Frequency

–

5 V ±2%, Normal Mode

Modulation for EMI Consideration

–

5 V ±3%, Low-Power or Crossover Mode

• Reset Function With Deglitch Timer and

• Switching Frequency, 440 kHz (typical)

Programmable Delay

• Input Operating Range, 1.5 V to 40 V, (V

• Alarm Function for Undervoltage Detection

–

1-A Load-Current Capability

and Indication

–

200-mA Load-Current Capability Down to

• Thermally Enhanced Package for Efficient

Heat Management

–

120-mA Load-Current Capability Down to

• Enable Function

• Automotive Electronic Controller Power

Supply

• Low-Power Operation Mode

The TPIC74100-Q1 is a switch-mode regulator with integrated switches for voltage-mode control. With the aid of

external components (LC combination), the device regulates the output to 5 V ±3% for a wide input-voltage

range.

The TPIC74100-Q1 offers a reset function to detect and indicate when the 5-V output rail is outside of the

specified tolerance. This reset delay is programmable using an external timing capacitor on the REST terminal.

The TPIC74100-Q1 has a frequency-modulation scheme to minimize EMI. The clock modulator permits a

modulation of the switching frequency to reduce interference energy in the frequency band.

The 5Vg output is a switched 5-V regulated output with internal current limiting to prevent RESET from being

asserted when powering a capacitive load on the supply line. This function is controlled by the 5Vg_ENABLE

terminal. If there is a short to ground on this output (5Vg output), the output self-protects by operating in a

Ordering Information

Part Number

Package

TPIC74100QPWPRQ1

R-PDSO-G (PWP, 20-pin)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.