1

2

3

4

8

7

6

5

SERIES IN1

REF

SW REG IN2

OUTPUT

GND (PWR)

SW IN

GND

SW CURRENT

CTRL

TL499A

www.ti.com

SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015

5 Pin Configuration and Functions

P or PS Package

8-Pin PDIP or SO

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

GND

5

—

Signal ground.

GND (PWR)

7

—

Power ground.

OUTPUT

8

O

Regulated output

REF

2

I

Feedback tap for output voltage

SERIES IN1

1

—

Power source for series voltage regulator.

SW CURRENT CTRL

4

I/O

Resistor to ground controls switching current

SW IN

6

I/O

Step up switching inductor node

SW REG IN2

3

—

Power source for step-up switching regulator.

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1)

MIN

MAX

UNIT

VO

Output voltage(2)

–0.3

35

V

VI1

Input voltage, series regulator

–0.3

35

V

VI2

Input voltage, switching regulator

–0.3

10

V

Blocking-diode reverse voltage

35

V

Blocking-diode forward current

1

A

SW IN

Power switch current

1

A

Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds

260

°C

TJ

Junction temperature

150

°C

Tstg

Storage temperature

–65

150

°C

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

All voltage values are with respect to network ground terminal.

6.2 ESD Ratings

VALUE

UNIT

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)

±200

Electrostatic

V(ESD)

V

discharge

Charged-device model (CDM), per JEDEC specification JESD22-C101(2)

±2000

(1)

JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with

less than 500-V HBM is possible with the necessary precautions. Pins listed as ±200-V may actually have higher performance.

(2)

JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

Copyright © 1984–2015, Texas Instruments Incorporated

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