MAX8530 datasheet(5/12 Pages) MAXIM

5 / 12 page

Dual Low-Dropout Linear Regulators

with RESET or Low-Noise Output in UCSP or QFN

_______________________________________________________________________________________

LOAD TRANSIENT

(VIN = 3.8V, ILOAD = 1mA TO 80mA)

MAX8530 toc12

ILOAD

50mA/div

µs/div

VOUT

20mV/div

AC-COUPLED

Pin Description

MAX8530

(QFN)

MAX8531

(QFN)

MAX8530

(UCSP)

MAX8531

(UCSP)

NAME

FUNCTION

OUT2

Regulator 2 Output. Guaranteed 150mA output current.

Regulator Input

OUT1

Regulator 1 Output. Guaranteed 200mA output current.

GND

Ground. Also functions as a heatsink for the 6-pin QFN. Solder to a large

pad or the circuit board ground plane to maximize thermal dissipation.

SHDN

Shutdown Input. A logic low shuts down both regulators. Connect to IN

for normal operation.

—

RESET

Reset Active-Low Open-Drain Output. Minimum timeout of 100ms. RESET

is low in shutdown.

—

Reference Noise Bypass. Connect to a 0.01µF ceramic capacitor for

reduced noise at both outputs.

Typical Operating Characteristics (continued)

VOUT1 = 3.3V, VOUT2 = 1.5V, load = 80mA (both output voltages), VIN = 3.8V, COUT_ = 2.2µF, CBP = 0.01µF, CIN = 2.2µF, and TA = +25°C,

unless otherwise noted.

LOAD TRANSIENT NEAR DROPOUT

MAX8530 toc13

ILOAD

50mA/div

µs/div

VOUT

20mV/div

AC-COUPLED

VIN = VOUT + 0.1V

RESET RESPONSE

(MAX8530)

MAX8530 toc14

VOUT-

2V/

div

40ms/div

VIN

VRESET

2V/

div

2V/

div

SHUTDOWN RESPONSE

MAX8530 toc15

VOUT-

1V/

div

1ms/div

VSHDN

2V/

div

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