lp2985-28d NXP Semiconductors, lp2985-28d Datasheet - Page 2

• Manufacturer Part Number: lp2985-28d
• Description: Lp2985-xx Micropower 150 Ma Low Noise, Low Dropout Linear Regulator
• Manufacturer: NXP Semiconductors

GENERAL DESCRIPTION
The LP2985-XX is a 150 mA, fixed output voltage regulator designed
to provide very low dropout and low noise in battery powered and
portable applications. The output voltage is preset to 1.5, 1.8, 2.8,
3.0, 3.3, 3.6, or 5.0 V.
Designed with an optimized PNP process, the LP2985-XX achieves
unequalled performance in all specifications critical to
battery-powered designs such as low supply-current, low dropout
voltage, low power consumption, small size, fast dynamic response
to line and load, precision output, etc. This regulator consists of an
internal voltage reference, an error amplifier, a driver with current
limiter and a thermal shut-down mechanism.
The LP2985-XX is housed in a small outline 5-lead package
(SOT23-5/SOP003).
FEATURES
SIMPLIFIED DEVICE DIAGRAM
Philips Semiconductors
2003 Oct 31
Very low consumption current: 85 mA typ. (when not loaded),
0.1 mA max. (when off)
Very low dropout voltage: 100 mV typ. (I
High precision output voltage: 2%
Output current capacity: 150 mA
Low noise: 30 mV
Good line regulation: 0.01%/V typ.
Good load regulation: 30 mV typ. (I
Low temperature drift co-efficient to V
Built-in current limit and thermal shut-down
Wide operating temperature range: –40 to +85 C
Preset output voltages: 1.5, 1.8, 2.5, 2.8, 3.0, 3.3, 3.6, or 5.0 V
Micropower 150 mA low noise,
low dropout linear regulator
RMS
@ 20 Hz to 80 kHz (C
ON/OFF
NOISE
GND
V
IN
OUT
3
1
4
2
OUT
= 1 to 150 mA)
OUT
: 100 ppm/ C
REFERENCE
= 50 mA)
n
BIAS
= 10 nF)
Figure 1. Simplified device diagram.
LP2985-XX
SHUTDOWN
THERMAL
2
DRIVER
APPLICATIONS
Cellular phones, cordless phones, and 2-way radios
Electronic notebooks, PDAs and palmtop computers
Cameras, VCRs and camcorders
PCMCIA cards
Modems
Battery-powered or hand-held instruments
CURRENT
LIMIT
SL01545
5
V
OUT
LP2985-XX
Product data