TPS77101/115/118/127/128/133/150 WITH RESET OUTPUT

TPS77201/215/218/227/228/233/250 WITH POWER GOOD OUTPUT

150-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING

SLVS225D – FEBRUARY 2000 – REVISED OCTOBER 2000

2

POST OFFICE BOX 655303

description (continued)

The device is enabled when the EN pin is connected to a low-level input voltage. This LDO family also features

a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent

current to less than 1

The TPS771xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS)

or reset output voltage. The RESET output of the TPS771xx initiates a reset in DSP, microcomputer or

microprocessor systems at power up and in the event of an undervoltage condition. An internal comparator in

the TPS771xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated

output voltage. When OUT reaches 95% of its regulated voltage, RESET will go to a high-impedance state after

a 220 ms delay. RESET will go to low-impedance state when OUT is pulled below 95% (i.e. over load condition)

of its regulated voltage.

For the TPS772xx, the power good terminal (PG) is an active high output, which can be used to implement a

power-on reset or a low-battery indicator. An internal comparator in the TPS772xx monitors the output voltage

of the regulator to detect an undervoltage condition on the regulated output voltage. When OUT falls below 82%

of its regulated voltage, PG will go to a low-impedance state. PG will go to a high-impedance state when OUT

is above 82% of its regulated voltage.

AVAILABLE OPTIONS

T

OUTPUT VOLTAGE

(V)

PACKAGED DEVICES

MSOP (DGK)

TJ

TYP

TPS771xx

SYMBOL

TPS772xx

SYMBOL

5.0

TPS77150DGK

AFV

TPS77250DGK

AGE

3.3

TPS77133DGK

AFU

TPS77233DGK

AGD

2.8

TPS77128DGK

AFS

TPS77228DGK

AGB

– 40

°Cto125°C

2.7

TPS77127DGK

AFR

TPS77227DGK

AGA

– 40

°C to 125°C

1.8

TPS77118DGK

AFP

TPS77218DGK

AFY

1.5

TPS77115DGK

AFO

TPS77215DGK

AFX

Adjustable

1.5 V to 5.5 V

TPS77101DGK

AFN

TPS77201DGK

AFW

NOTE: The TPS77101 and TPS77201 are programmable using an external resistor divider (see application information).

The DGK package is available taped and reeled. Add an R suffix to the device type (e.g., TPS77101DGKR).

OUT

SENSE

6

5

3

IN

IN

EN

GND

4

7

1

VI

0.1

µF

10

µF

+

OUT

8

VO

PG or RESET

PG or

RESET

2

Figure 1. Typical Application Configuration (For Fixed Output Options)