Ultralow, IQ, anyCAP®
Low Dropout Regulator
ADP3342
FEATURES
FUN°TIONAL BLO°K DIAGRAM
Accuracy over line and load: 4.0ꢀ ꢁ 25ꢂ°,
5ꢀ over temperature
Q1
IN
OUT
VCC
Ultralow dropout voltage: 190 mV (typ) ꢁ 300 mA
Requires only °O = 1.0 µF for stability
THERMAL
CC
PROTECTION
any°AP architecture stable with any type of capacitor
(including ML°°)
°urrent and thermal limiting
Low shutdown current: < 2 µA
1.7 V ≤ VIN ≤ 6 V
g
m
DRIVER
PWRGD
SD
BAND GAP +
REF –
ADP3342
2.8 V ≤ V°° ≤ 6 V
GND
VOUT = 1.2 V 5ꢀ
0ꢂ° to +100ꢂ° ambient temperature range
Ultrasmall thermally enhanced 8-lead MSOP package
Figure 1.
APPLI°ATIONS
Notebook P°s
Desktop P°s
3.3V
GENERAL DES°RIPTION
3
VCC
The ADP3342 is a unique member of the ADP33xx family
of precision low dropout anyCAP voltage regulators. The
ADP3342 operates with an input voltage range of 1.7 V to 6 V
and delivers a continuous load current up to 300 mA. In order
to support the ability to regulate from such a low input voltage,
the power rail to the IC, VCC, has been split off from the main
power rail, IN, from which the output is powered.
ADP3342
V
1.8V
V
OUT
1.2V
IN
7
6
2
5
IN
OUT
+
+
1µF
1µF
SD PWRGD
ON
GND
4
OFF
The ADP3342 stands out from the conventional LDOs because
it has the lowest thermal resistance of any MSOP-8 package and
an enhanced process that enables it to offer performance
advantages beyond its competition. Its patented design requires
only a 1.0 µF output capacitor for stability. This device is
insensitive to output capacitor equivalent series resistance (ESR)
and is stable with any good quality capacitor, including ceramic
(MLCC) types for space-restricted applications. The dropout
voltage of the ADP3342 is only 190 mV (typical) at 300 mA.
This device also includes a safety current limit, thermal
overload protection, and a shutdown control pin.
Figure 2. Typical Application Circuit
Rev. D
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