APL5501 Datasheet, PDF (1/23 Pages) Anpec Electronics Coropration – Low IQ, Low Dropout 500mA Fixed Voltage Regulator

APL5501/2/3
Low I_Q, Low Dropout 500mA Fixed Voltage Regulator
Features
• Low Noise : 50µV_RMS (100Hz to 100kHz)
• Low Quiescent Current : 50µA (No load)
• Low Dropout Voltage : 170mV (@500mA)
• Very low Shutdown Current : < 0.5uA
• Fixed Output Voltage : 1.3V ~ 3.4V
• Stable with 4.7uF Output Capacitor
• Stable with Aluminum, Tantalum or Ceramic
Capacitors
• Reverse Current Protection
• No Protection Diodes Needed
• Built in Thermal Protection
• Built in Current Limit Protection
• Controlled Short Circuit Current : 150mA
• Fast Transient Response
• Short Setting Time
• SOT-23-5, SOT-89, SOT-89-5, SOT-223, SO-8,
TO-252 and TO-252-5 Packages
• Lead Free Available (RoHS Compliant)
Applications
Design with an internal P-channel MOSFET pass
transistor, the APL5501/2/3 maintains a low supply
current, independent of the load current and dropout
voltage. Other features include reverse current
protection, thermal-shutdown protection, current limit
protection to ensure specified output current and con-
trolled short-circuit current. The APL5501/2/3 regu-
lator comes in a miniature SOT-23-5, SOT-89, SOT-
89-5, SOT-223, SO-8, TO-252 and TO-252-5
packages.
Pin Configuration
TAB is GND
APL5501
BP GND _SHDN
5
4
1
2
3
1
2
3
V IN G N D
VOUT
SOT-89 (Top View)
VOUT GND VIN
SOT-89-5 (Top View)
• Notebook Computer
• PDA or Portable Equipments
• Noise-Sensitive Instrumentation Systems
IN
1
GND
2
GND
3
SHDN
4
8
OUT
7
GND
6
GND
5
BYP
VIN
1
GND
2
SHDN
3
5
VOUT
4
BP
General Description
SO-8 (Top View)
SOT-23-5 (Top View)
The APL5501/2/3 is micropower, low noise, low drop-
GND
out linear regulator. Operate from 2.7V to 6V input
voltage and deliver up to 500mA. Typical output noise
VOUT
is just 50µV_RMS with the addition of an external 0.1µF
BP
bypass capacitor in BP pin and typical dropout volt-
1 23
GND
age is only 170mV at 500mA loading . Designed for
SHDN
use in battery-powered system, the low 50uA quies-
VIN
cent current makes it an ideal choice.
VIN
VOUT
TO-252 (Top View)
TO-252-5 (Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. B.2 - May., 2005
www.anpec.com.tw